thank you for posting this! i dont know why more people cant be this objective! literal numbers are helpful. opinions vary.. results MAY vary but thats pretty dang specific and gives a great idea as to how loud these really are! hopefully more people will pay follow
FYI - every 6 db change equals a DOUBLING in sound pressure - its a logarithmic scale. By coincidence, the difference between the Q4 and Powercore happens to be about 6db...so that means it is twice as loud. HUGE difference.
CampChaosOffroad I don’t mind. I try to always make sure to give a throttle twist by each car so they know I’m there but that doesn’t always keep them from merging into you.
Great video, beside the slightly different in low revs it's a good comparison. Next time maybe mark the throttle with tape or something so you have the exact same revs. I think I'll pick up a Q4
sweet comparo so the power core 4 louder and lighter? is length the same ? or is it just the insert in side muffler that changes weight and makes the q4 heavier
Cant tell the difference on my bike. On a more powerful bike you might feel a difference, but on the wr250r I cant feel any difference.. Also worth mentioning that when you take the spark arrestor out of the Q4 its almost the same loudness as running the Powercore 4 with factory spark arrestor
This should be the baseline for other exhaust comparison videos. Great job, man!
thank you for posting this! i dont know why more people cant be this objective! literal numbers are helpful. opinions vary.. results MAY vary but thats pretty dang specific and gives a great idea as to how loud these really are! hopefully more people will pay follow
This answered literally every question I was seeking the answers for. Thank you and your amazing machines.
almost. would have been good woth a stock test
Selecting an exhaust system. This was very helpful. Thank you.
Awesome video! Thank you for being so scientific with it. The best sound comparison I've seen
awesome test.
thanks
Good video, nice comparison.
RIP WR250R, great bike.
great review dude. cant wait till i get my core4
Awesome video man!!! This is what a comparison video should actually be
Thanks for doing the comparison on this bike.
Nice video. Just installed my powercore 4 and it's LOUD. Glad to see it would probably be a waste to change to Q4 for such a slight sound decrease.
FYI - every 6 db change equals a DOUBLING in sound pressure - its a logarithmic scale. By coincidence, the difference between the Q4 and Powercore happens to be about 6db...so that means it is twice as loud. HUGE difference.
CampChaosOffroad I don’t mind. I try to always make sure to give a throttle twist by each car so they know I’m there but that doesn’t always keep them from merging into you.
With the spark arrestor my powercore 4 is slightly quieter.
Are you/were you running the factory header at the time of this comment?
Liam Cunnane I put them both on at the same time.
Super awesome comparison on procircuit vs yoshimura.
Excellent Video. All you need is a little table or spreadsheet at the end showing the side by side comparison. Nonetheless, awesome vid - Thanks
super helpful! Thanks for this vid!
Awesome vid really well done!!
Great video, thank you for sharing that, very helpful.
Great video, beside the slightly different in low revs it's a good comparison. Next time maybe mark the throttle with tape or something so you have the exact same revs. I think I'll pick up a Q4
Do you know what the numbers were for stock exhaust?
great video, thanks for posting
Awesome test Thank You
This was an awesome test! Wish more people did this. Would anyone know how these compare to the yoshimura rs2?
wonder what would the difference be if the Q4 had the quiet insert in...
great vid. thanks
What's the difference between those pipes and the fmf 4.1 aluminum one
I have Yamaha WR250X 2016 model. Which exhaust best for this bike? Advice me sir!
Is the fmf factory 4.1 louder than the powercore 4? Please help
Can you do this with the stock exhaust ?
Trivia question, do they use the same spark arrestors?
Stephen im trying to work this out im asuming slipung in diffrect spark resistor is the only diffrence?
You should ride it and see how it sounds on the streets
Will this fit a 2017 CRF 150f? (Power core)
sweet comparo so the power core 4 louder and lighter?
is length the same ?
or is it just the insert in side muffler that changes weight and makes the q4 heavier
thanks inadvance!
any difference in performance?
250g makes absolutely not difference in the grand scheme of things but it is good to know.
1:00 2:10
its technically illegal where I live to have a bike making more than 96db, measured from any distance.
That's not possible, they have to have a spec for distance if they are going to have a max db law.
I put powercore 4 on my klr 650 n it is too loud ....
Then your too old 😂😂😂
Is this with or without db killer insert?
without
which has more power?
Cant tell the difference on my bike. On a more powerful bike you might feel a difference, but on the wr250r I cant feel any difference..
Also worth mentioning that when you take the spark arrestor out of the Q4 its almost the same loudness as running the Powercore 4 with factory spark arrestor
Bro tipowercore
ti is better