seemsa this is an item you can make and sell for a profit, not as a manufactures approval but as a custom modification, where is this sold, or has anyone begun to produce this?
Do you live in a state where premium has less ethanol in it? If the ethanol content is lower you will see an improvement in power and economy but it has nothing to do with the octane rating. I have a hard time using high octane fuel because it's expensive and the Jeep doesn't have heat mileage. If I get my tune wrong or if I'm driving into wind I can get as low as 7mpg with the supercharger on, otherwise I average around 14mpg.
Upgrade the fuel pump to a fuel pump that gives you above needed pressure. Then get a fuel pressure regulator. Then upgrade the spark plugs to a higher CC level. Match the spark plugs to the amount of intake you are going to get with the supercharger. Together you will have your golden ratio to maintain the fuel to air ratio. Upgrading the fuel system will keep you from running lean. Fat and happy is not always good advice but it can keep you from having catastrophic problems it's better to slowly lean to a ideal mixture than to lean out too far.
Fuel pressure should be 41 ish with the fuel pressure regulator unplugged and 31 with it plugged in and running perfectly. I have had no luck with a reliable OEM fuel pump to include Bosch, all have dropped and run at 26psi. I use the four-hole injectors and no fuel pressure regulator, currently hitting around 35-36psi. I am adding my MSD next week and re-gapping the plugs, then adding the PC3. The 2.5 also pulls data from the temperature sensor in the thermostat housing.
This is actually really awesome I took my Jeep Wrangler 2.5 l from Austin to El Paso which is typically in a modern car a 7 to 8 hour drive. In my Jeep it was a 12-hour drive 😬. I figured out a little trick that helped me get up to 70- 80 miles an hour because I can only get to 65. Especially when I'm going downhill I would get right behind an 18-wheeler and on these long trips it really wasn't a problem because we could both maintain speed. It helped a little bit with the gas consumption but it got pretty sketchy because I didn't know where the next gas station was going to be. There's nothing worse than being broken down in the middle of a desert. I remember I pulled in the parking lot with my engine sputtering it died in the parking spot that I pulled into. I was relieved that I made it.
Get a military "Jerry Can" holder and Jerry Can. It holds an extra 5 gallons for those long trips. I have one for my TJ and It bolts right next to my spare tire rack. I just did a rattle can primer and Dupli-Color match paint to stock paint and a clear coat. It took less than 1 Saturday to get everything done. Hope it helps in your adventures. By the way, in total it cost around $75-80 for the mod.
How many cc's is the stock YJ fuel injectors? When you upgrade fuel injectors to allow for more fuel you allow for more pressure per stroke. Obviously you would have to maintain the ratio when you do this so you would have to have forced induction to keep the engine running. Also another thing you could do is modify the engine with an upgraded camshaft. This would change the timing to less economy and more performance. Also it sounds awesome.
I get the 91-95 people with the SBEC2 using piggyback stuff, seems odd that the 96-02 owners would be playing with them considering their JTEC is fully tunable with HP tuners.
Also skankfoot racing makes an adapter to put a JTEC ECU in a SBEC2 Jeep, so you could also tune with HP tuners. I've contemplated doing that to mine, I run an 89 2.5l converted to 95 YJ fuel injection in my supercharged MJ.
@@JeepSheepTV I have a Speeduino for my MJ, just haven't got around to setting it up though. It is inexpensive but also a lot of work to set up, people have ran the 4.0l off of it but so far no 2.5ls, also neither 2.5l trigger pattern is currently supported so you would either need to write the code or set up an aftermarket trigger wheel, I've got a 36 -1 wheel to eventually put on mine.
what new mods are there for modify the computer? seems that little computer is adjusting your mods to make the mods less effective, what is the greatest version of the computer modification as of late 2021.
i want to see you build a hi compression bullet proof engine in the future and up the boost to 8psi. i believe the v 8 amc engines share alot of valve train components and maybe even rods and pistons so with some reshearching you might be able to get who know what all aftermarket performance parts that will work or be modified to work. Wouldnt it be awesome to install forged rods and pistons in a bored out 2.5 with 8 to 10 psi? With a beefed up valve train and headstuds a reliable 200 plus hp would be easily obtainable and dependable. If you dont do it i will lol
I think there is better aftermarket support for the 4.0L engine which also shares components. It really wouldn't be that hard to find beefed up components as there are many kits for the 4.0 that make it ready for a turbo. I could honestly ramp it up to 8psi right now and get close to 150hp or more depending on what the engine actually makes now. I just need to get my bypass valve tuned in first so it's more drivable.
@@JeepSheepTV the 4.0 pistons are interchangeable with the 2.5. I did a .30 over on my 2.5 and I have two spares. Supposedly there is a stroker kit out there. I will build one if I can source the parts.
Sadly 2.5L is about as large as we can go before the engine becomes too unbalanced. Anyway, these 4-bangers are at a pretty low compression ratio with an iron block so...boost away! You can get stronger connecting rods and maybe cut a 4.0 crank cradle to strengthen the bottom end. Don't forget to open up the piston ring gaps and 'port' the oil pump. Maybe lighten and balance the crank and pistons?
@BnBFirearms this is the last one that I have made. If you look at the playlist, there are a few more videos about the supercharger, but they are not part of the series
@BnBFirearms I did a couple unofficial 0-60 runs, and it's much improved. I haven't put it on a dyno because I've been pretty busy since. I still have plans to keep working on it in the future.
Always remember that running rich is better than running lean as far as engine damage is concerned. Pre-detonation can, and will, melt pistons, melt piston rings, burn valves, etc. In other words, cause catastrophic engine damage.
@@JeepSheepTV ok heck yea I think I need to use a voltage clamp on the map sensor now the jeep cuts out as soon as I hit boost it is an obd2 style also . I thought I would let you know I am using a m45 the smaller supercharger
@@alexmarti9011 I would love to see pictures of the m45 setup! You are the second person to have map sensor issues. I'm actually surprised that I don't. Keep me posted on how you solve it. You can always email me at jeepsheeptv@gmail.com
Although adjusting the timing is recommended when supercharging a vehicle, I didn't do any adjustment to the timing. It's very difficult to do any adjustment with this jeep and I get away with it by operating at such low boost.
Not yet, I belive the v belt would need to be converted to serpentine belt. But you could add another belt system on top of the existing v'belt pulleys. Could be done.
You can, I opted for increasing the pressure in my fuel line with an inline regulator. It's easier, cheaper, and you can adjust it periodically while you dial in your tune.
Who says 4 hole injectors add more fuel? The injector size (or flow rate) determines the fuel flow not the number of holes. Aside from large changes in the flow rate the PCM will adjust itself to normal parameters when in closed loop. Only in open loop will you see additional fuel
@@justinpalmer9417 You have one or more bad injectors or a bad O2 sensor. I've installed 4 hole injectors in 5 jeeps and they all gained MPGs. Look at your spark plugs and see if they're black. If they are all the same then change your O2 sensor.
There is more than 1 part number that will work but you need a PC3 or PC5 that was built for a 4cyl engine and connects at the injectors not at the ECU. The GSXR 1000 is the motorcycle that my PC3 was designed for.
you had a good build but ffff it up by making it so boring and hard to follow ...any one that is interested in a video like this already understands the schooling and is not interested in it they want to see the project as you build and you can explain as you do it just like the guys with lots of views .
Might I refer you to the "Shorts" in this playlist that I created similar to "the guys with lots of views". I do find it odd however that those short videos have significantly fewer views than these long ones, but what do I know.
I dare you to swap in an entire engine, transmission, transfer case, wire harness, motor mounts, gauge cluster, and driveshafts for under $1000, then a new d35 rear axle after you blow it up.
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Awesome!! Thanks for the shout out!! We'll have to meet up with a group of supercharged Jeeps at some point.
Yes we will!
Good start for the basics for people to start off with to understand what the sensors do and why
I still waiting for you to sale me the bolt on kit because I can fabrication anything bud electrical and sensor things is too complicated for me
seemsa this is an item you can make and sell for a profit, not as a manufactures approval but as a custom modification, where is this sold, or has anyone begun to produce this?
As far as octane I run premium in my 95 yj2.5 and my 92xj4.0 people say it doesn't make a difference but both of mine run much smoother with it 🧑🔧
Do you live in a state where premium has less ethanol in it? If the ethanol content is lower you will see an improvement in power and economy but it has nothing to do with the octane rating. I have a hard time using high octane fuel because it's expensive and the Jeep doesn't have heat mileage. If I get my tune wrong or if I'm driving into wind I can get as low as 7mpg with the supercharger on, otherwise I average around 14mpg.
I can get non-ethanol gasoline where I am at. That is all I run in my vehicles. They all running as smooth as an old Singer sewing machine.
Upgrade the fuel pump to a fuel pump that gives you above needed pressure. Then get a fuel pressure regulator.
Then upgrade the spark plugs to a higher CC level. Match the spark plugs to the amount of intake you are going to get with the supercharger. Together you will have your golden ratio to maintain the fuel to air ratio. Upgrading the fuel system will keep you from running lean. Fat and happy is not always good advice but it can keep you from having catastrophic problems it's better to slowly lean to a ideal mixture than to lean out too far.
you should make a forum or a guide
At some point, that would be cool. It's a lot of work though
Fuel pressure should be 41 ish with the fuel pressure regulator unplugged and 31 with it plugged in and running perfectly. I have had no luck with a reliable OEM fuel pump to include Bosch, all have dropped and run at 26psi. I use the four-hole injectors and no fuel pressure regulator, currently hitting around 35-36psi. I am adding my MSD next week and re-gapping the plugs, then adding the PC3. The 2.5 also pulls data from the temperature sensor in the thermostat housing.
Just got my yj back running again. I'd like to do this eventually and take my ac out
Well done video...thanks for all the information
This is actually really awesome I took my Jeep Wrangler 2.5 l from Austin to El Paso which is typically in a modern car a 7 to 8 hour drive. In my Jeep it was a 12-hour drive 😬. I figured out a little trick that helped me get up to 70- 80 miles an hour because I can only get to 65. Especially when I'm going downhill I would get right behind an 18-wheeler and on these long trips it really wasn't a problem because we could both maintain speed. It helped a little bit with the gas consumption but it got pretty sketchy because I didn't know where the next gas station was going to be. There's nothing worse than being broken down in the middle of a desert.
I remember I pulled in the parking lot with my engine sputtering it died in the parking spot that I pulled into. I was relieved that I made it.
Get a military "Jerry Can" holder and Jerry Can. It holds an extra 5 gallons for those long trips. I have one for my TJ and It bolts right next to my spare tire rack. I just did a rattle can primer and Dupli-Color match paint to stock paint and a clear coat. It took less than 1 Saturday to get everything done. Hope it helps in your adventures. By the way, in total it cost around $75-80 for the mod.
How many cc's is the stock YJ fuel injectors?
When you upgrade fuel injectors to allow for more fuel you allow for more pressure per stroke. Obviously you would have to maintain the ratio when you do this so you would have to have forced induction to keep the engine running. Also another thing you could do is modify the engine with an upgraded camshaft. This would change the timing to less economy and more performance. Also it sounds awesome.
are you going to show how you installed the supercharger
Did you watch part 1: "mounting the supercharger" ?
I get the 91-95 people with the SBEC2 using piggyback stuff, seems odd that the 96-02 owners would be playing with them considering their JTEC is fully tunable with HP tuners.
Interesting, that is good to know.
Also skankfoot racing makes an adapter to put a JTEC ECU in a SBEC2 Jeep, so you could also tune with HP tuners.
I've contemplated doing that to mine, I run an 89 2.5l converted to 95 YJ fuel injection in my supercharged MJ.
@@Nathen2990 very cool
@@Nathen2990 I am doing some research right now into Speeduino for a low cost and fully customizable ECU solution
@@JeepSheepTV I have a Speeduino for my MJ, just haven't got around to setting it up though.
It is inexpensive but also a lot of work to set up, people have ran the 4.0l off of it but so far no 2.5ls, also neither 2.5l trigger pattern is currently supported so you would either need to write the code or set up an aftermarket trigger wheel, I've got a 36 -1 wheel to eventually put on mine.
How would you go about doing this to an 89? Would it be possible at all with the TBI?
@carlosfallas2169 on this playlist, I have a live stream when me and a guy talk about doing that. He did make it work.
what new mods are there for modify the computer? seems that little computer is adjusting your mods to make the mods less effective, what is the greatest version of the computer modification as of late 2021.
has some of the other builds used the newer version of the supercharger? without a clutch?
I haven't seen any yet but I hope some people start sending photos, I'm really curious about how well it will work.
I’m working on one now! Doing some behind the scenes stuff to figure out a way to make it operate N/A if wanted
Yay I’ve been looking forward to this video!
i want to see you build a hi compression bullet proof engine in the future and up the boost to 8psi. i believe the v 8 amc engines share alot of valve train components and maybe even rods and pistons so with some reshearching you might be able to get who know what all aftermarket performance parts that will work or be modified to work. Wouldnt it be awesome to install forged rods and pistons in a bored out 2.5 with 8 to 10 psi? With a beefed up valve train and headstuds a reliable 200 plus hp would be easily obtainable and dependable. If you dont do it i will lol
I think there is better aftermarket support for the 4.0L engine which also shares components. It really wouldn't be that hard to find beefed up components as there are many kits for the 4.0 that make it ready for a turbo. I could honestly ramp it up to 8psi right now and get close to 150hp or more depending on what the engine actually makes now. I just need to get my bypass valve tuned in first so it's more drivable.
@@JeepSheepTV the 4.0 pistons are interchangeable with the 2.5. I did a .30 over on my 2.5 and I have two spares. Supposedly there is a stroker kit out there. I will build one if I can source the parts.
Sadly 2.5L is about as large as we can go before the engine becomes too unbalanced. Anyway, these 4-bangers are at a pretty low compression ratio with an iron block so...boost away! You can get stronger connecting rods and maybe cut a 4.0 crank cradle to strengthen the bottom end. Don't forget to open up the piston ring gaps and 'port' the oil pump. Maybe lighten and balance the crank and pistons?
Mine runs 9psi, I can confirm it gets up and moves.
@@Its_Stone_Time What is the benefit of opening up the piston rig gaps?
Will a dump jet pc3 from a gsxr 1000 work ?
Do you have to use the power commander three or could you use other ones like the power commander four or the five?
You can use the others. Just need one that connects at the injectors for a 4cyl engine
@Jeep Sheep TV Is there another part to this Video?
@BnBFirearms this is the last one that I have made. If you look at the playlist, there are a few more videos about the supercharger, but they are not part of the series
@@JeepSheepTV thanks! Did you ever dyno or do a 0-60 after a tune?
@BnBFirearms I did a couple unofficial 0-60 runs, and it's much improved. I haven't put it on a dyno because I've been pretty busy since. I still have plans to keep working on it in the future.
Always remember that running rich is better than running lean as far as engine damage is concerned. Pre-detonation can, and will, melt pistons, melt piston rings, burn valves, etc. In other words, cause catastrophic engine damage.
I just finished a buddy’s Jeep and I only used a blow off valve
Cool, you can totally do that. I like to drive with the SC turned off a lot of the time so I have the bypass for NA mode.
@@JeepSheepTV ok heck yea I think I need to use a voltage clamp on the map sensor now the jeep cuts out as soon as I hit boost it is an obd2 style also . I thought I would let you know I am using a m45 the smaller supercharger
@@alexmarti9011 I would love to see pictures of the m45 setup! You are the second person to have map sensor issues. I'm actually surprised that I don't. Keep me posted on how you solve it. You can always email me at jeepsheeptv@gmail.com
So watching the videos do I need another type of programmer? Or will the pc3 do it all? I see your talking about a Lean programmer?
I have been running with just the PC3 and haven't had any issues so far
How did you manage the timing?
Although adjusting the timing is recommended when supercharging a vehicle, I didn't do any adjustment to the timing. It's very difficult to do any adjustment with this jeep and I get away with it by operating at such low boost.
Has anyone done this with a 88YJ? Biggest differences are TBI and a VBelt.
Not yet, I belive the v belt would need to be converted to serpentine belt. But you could add another belt system on top of the existing v'belt pulleys. Could be done.
i'd be in the same boat as you. Once i figure out why my jeep died at the job's parking lot, i'll get it back home and get started on this build!
Do you need higher pressure fuel injectors for the super charger?
You can, I opted for increasing the pressure in my fuel line with an inline regulator. It's easier, cheaper, and you can adjust it periodically while you dial in your tune.
@@JeepSheepTVwhat part number did you buy?
@@JeepSheepTVcould you help me out and give me a list of the parts you bought for the whole thing and the part numbers please?
@@WyattW28 I added a link to the regulator in the description of this video
@@WyattW28 All of the parts should be in the descriptions of each video
So if 4 hole injectors add more fuel ( dropped mpg so I assume more fuel) just yeet those in and it should have enough at high rpms?
Who says 4 hole injectors add more fuel? The injector size (or flow rate) determines the fuel flow not the number of holes. Aside from large changes in the flow rate the PCM will adjust itself to normal parameters when in closed loop. Only in open loop will you see additional fuel
@@JeepSheepTV when i swapped 4 hole into it i lost 2-3 mpg vs the stock single hole
@@justinpalmer9417 dang, I don't think that should happen. 2-3 is a lot.
@@JeepSheepTV yes that is why we made the conclusion they add significantly more fuel. You could also smell it at the rear of the jeep.
@@justinpalmer9417 You have one or more bad injectors or a bad O2 sensor. I've installed 4 hole injectors in 5 jeeps and they all gained MPGs.
Look at your spark plugs and see if they're black. If they are all the same then change your O2 sensor.
is there a certain model number of pc3 that you are using? or is there only one pc3?
There is more than 1 part number that will work but you need a PC3 or PC5 that was built for a 4cyl engine and connects at the injectors not at the ECU. The GSXR 1000 is the motorcycle that my PC3 was designed for.
Anybody try this with a TBI throttle body 2.5?
Hi Todd have you heard of anyone doing it?
Genius bro
You should make a "weeping Jeep" sticker. Because superchargers make a a whining sound.😭😂
I guess I need to start on my build! LOL
Lol yea, I may have called you out there.
you had a good build but ffff it up by making it so boring and hard to follow ...any one that is interested in a video like this already understands the schooling and is not interested in it they want to see the project as you build and you can explain as you do it just like the guys with lots of views .
Might I refer you to the "Shorts" in this playlist that I created similar to "the guys with lots of views". I do find it odd however that those short videos have significantly fewer views than these long ones, but what do I know.
LS swap for $1000 (sorry to be that guy)
I dare you to swap in an entire engine, transmission, transfer case, wire harness, motor mounts, gauge cluster, and driveshafts for under $1000, then a new d35 rear axle after you blow it up.
@@JeepSheepTV Ok !! Already doing it but in a cj5. I hear you though!