2018 Charger RT - Intake - Throttle Body - Longtube Headers - Custom Tuning
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- Опубликовано: 12 сен 2024
- We had the pleasure of custom tuning this 2018 Charger RT using HP Tuners. The car came in equipped with a Cold Air Intake, Larger Throttle Body, and a set of Longtube Headers. The car baselined, with mods already installed, at 319hp and 385tq to the tires. After tuning we were able to make 331hp and 396tq. An increase of 12hp and 11tq with our custom tuning.
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It's a shame people concentrate on the peak HP so much. It's a beautiful torque curve and the car's peak torque is exceptional. In everyday driving, I bet this car is more fun than one that has more typical peak numbers (e.g., ~340 HP and ~370 ft-lbs TQ).
All that said, it looks like it's dropping off at high rpms. The stock peak HP is reported at 5250 rpm. With bolt-ons, it should stretch the peak out a bit to 5300-5400 rpm. This car appears to be peaking at 4900 rpm pre-tune, 4600 rpm after first tune, 4750 rpm after second tune, and 5000 for the final tune.
So we have to use wheel speed to simulate rpm. Inductive pickup has never worked. So rpm is off slightly from actual, no more than 200rpm +/- typically. Bolt-ons wont stretch the peak power higher into the rpm range. The intake manifold is what limits that. The 5.7 mani is made for low end grunt. The 6.4 mani is made to shift the power to the right.
I'd argue the cam is the determining factor of your power band and all the bolt ons are what make it achieve that peak number and/or stretch it down low a bit. Every cam isn't the same so they all won't run the same from the same addons. Peak power is negligable though, you hit it for a split second and its gone. Not worth having a large peak in the power band especially when you have a V8. They make a wide range of power easier than peaking high in one spot.
Exhaust sounds soo good
They did something wrong on that car, either cheap headers, bad intake, or it needs spark plugs or something. It should be making a bit more power. Who knows how it's been maintained or worked on
These cars are more regularly between 300-330 whp stock on our dyno.... but yes it should have made a little more than what it did that day.
@@sdracingllc1594 yes so many factors, not tryna hate, you guys did great
I'm wanting to see a better rim and tire combo too, big azz rims and low profile tires, that's for show.
I gotta a 2018 charger 345 Daytona and I have CAI and JBA long tube and stage 1 Diablo tune . I am making 380 WHP and 420 crank . This number is very low .
@@badboyxx99 how did you only lose 40 hp from crank to whp 😂
Well its definitely gone pull, and feel strong.
Every dyno is different plus car looks lowered and wheels could also a part
Damn mine just has long tube and cold air and I’m pushing 370 whp
Congrats.... it wouldn't make that on our dyno.
@@sdracingllc1594 but you said the r/t is typically 330-350hp stock on your dyno and the long tubes should net about 40hp so shouldn’t he be correct from what he’s saying his r/t puts out?
My rt has a 6.4 camshaft and 6.4 headers and mopar performance air intake and mopar performance full exhaust , my numbers reached 386 hp and im gonna install a ARH LT next week wish me good numbers 😂😂😂
No tune?
@@Ajay-rw5jyLT headers won't net that much power. At least on my 5.7 they didn't. When I added them I had a CAI and 392 intake manifold and I only got 7 whp and lost torque down low.
Can you use a diablo unlocked pcm and tuner for a shorty headers install on a 2015+ challenger r/t? Is that possible it’s hard to find a clear answer or any answer on the web.
Yes.
@@sdracingllc1594 thank you! I appreciate it a lot. Cheers!
Heard the mustang dyno gives less horsepower for mopars
It reads lower for all vehicles.
Needs a cam
Everything needs a cam!
Needs some 🌽
@@jcesparza7490 ... then you better bullet proof them injectors.
What is the typical loss difference between modern auto and manual transmission. I remember for the LS1 F-bodies, it was assumed the 4-spd auto was about 18% loss and the 6-spd manual was about 13% loss.
with the 8 speed auto the mopars will typically make more power with the auto trans than the manual.
@@sdracingllc1594, interesting. Thanks.
All of that just to have my factory rcsb f150 put two car lengths on it lol
Where are you out of ??
Greenville, SC
Without supercharger it won’t perform as well with all that extra breathing mods
Man I wonder why it was so low on power
May have just been a low performer from factory. It happens from time to time.
Mustang dynos read lower than dynojets
How are you making less then factory with mods 😭
Read the responses below to other commenters and you're answers are there.... and no we made more then factory at the tire.
Want to tune/sponsor my 2020 Supra 3.0 premium for the channe?
We could tune it but you would need to provide all of the ECUtek cables and licenses for it.
Is it on springs or coillovers?
Lowering springs
@@sdracingllc1594 ... joker gone shake soon as he pickup more horses. Better get on them coils, axles.
So making stock 370 crank now?
Yea but to the wheels, crank is probably 400 ish
Isnt that less then stock horsepower
No, Stock rating is to the crank... not the tire.
Mustang dynos are evil
Can I put srt brembos on a 2021 RT??
Yes
Gone cost a grip miles well do engine work
HHP does it
Why is so low hp?
Read our responses to other comments
That's terrible
Terrible results!
Explain your expertise in your conclusion..... I wont hold my breathe
@@sdracingllc1594 My 2018 Chrysler 300S with Stainless Works long tubes, 84 MM t-body, Cold air intake, catless mids, Diablo Trinity and a 3.09 Limited slip with 93 tune made an average of 388 HP and 402 LB. Ft. Tq. on a Mustang Dyno. I now have a ported 6.4 intake, but have not run it on the dyno since the change. I am currently having an Arrington 448 NA engine built and hope that combo will yield at least 520/540. You can breathe now.
@@charlesmarshall2697 you were on a very generous mustang dyno. Come put it on mine and it wont come close to that.
@@sdracingllc1594 .... lol