This aint Lids ppl, its not one size fits all. On some n/a h22s and k20s (even stock ones) a 3" is just the right size that the exhaust charges dont lose velocity and create enough flow. Ive seen stock b16s that make loads of power on a 3" with the right header. Ive also seen a built k20 with a **** header & 3" piping make insignificant improvements to justify the costs. with the right header, a 3" with work wonders. More air + gas = more fumes. More fumes = need larger piping. /rant
the trick to exhaust diameter tuning is first off: get a real header. You need a header with extremely specific length and diameter runners that will create a scavanging effect. This is when each pulse of exhaust from each individual cylinder creates a low pressure area behind the pulse, or charge, causing the next pulse to accelerate after it to fill in that void. Physics 101 ppl. the 2nd part is finding the sweet spot in piping diameter to continue that effect w/out slowing the gases down.
Backpressure??? wtf, are ppl still going on about that old urban myth!?!?
Dude, I apologize if this comes off as disrespectful, but you need to study exhaust dynamics more. You are completely incorrect. This has been proven for over a decade now, "back pressure" is BAD. Back pressure is the lack of the vacuum effect the engine's exhaust system requires to operate. With BP, your exhaust pulses would get sucked back into the engine. You NEED exhaust velocity, not back pressure!
3" exhaust for a car pushing under 250 whp is useless. you lose so much back pressure 2.5" is the best you can do until you hit that mark then get a 3"..
on older honda B series motor, yes thats true. but on a K-series a 3" pipe has significant gains vs a 2.5". its proven, do research if you need proof and dont spread wrong info
i have done my own research, i own a 06 type s and ive done dynos with a 3" vs a 2.5" with cold air headers and i lost power using the 3" from when i had 2.5" so technically im not spreading wrong info.
+ kpro/rbc ~ 230ish with a tune, with a good tune 236ish, 3" is still too big of a pipe for that little power, now throw in some camshafts/valvetrain upgrade and run 3" pipe then now youre talking power.
god your so wrong.. go tell your friend hes an idiot or stop using his name. youll notice plenty of gains. infact here is a bet ill run both for ya if i do get gains you pay for the dyno, if i dont ill buy ya a sandwhich
You'll get a gain off of 2.5". You'll get a gain off 3". You won't gain anything going from 2.5" to 3" with a naturally aspirated motor. You'll only notice the "benefits" of 3" when boosted, or making 400+hp.
He's not my "friend", he's the the writer of a series of books discussing turbochargers, and forced induction dynamics.
You vs. Corky Bell (a guy who guesses vs. a scientist) = Me trusting the scientist.
You obviously don't understand the limitations of differently sized exhaust systems, so this is pretty much pointless.
Before you go telling people they're wrong, make sure you can back yourself up with actual facts, instead of "come here ill prove it" which doesn't prove anything. Otherwise, I'll show you how an open 3" downpipe works.
If I understand this correctly, u guys r talking bout the size of the pipes. the downpipe is ok, but for a 200HP car, I would go with 2.25. 3 is huge like the man says for huge turbo cars, 2.5 is ok, but u will see slight little bit less performance over 2.25, not much!
I think the sweet sound that you heard is from the combo of both the resonator and the muffler. The Extreme Resonator is only available at Morse Muffler in Burbank CA. (818)848-1058. Talk to Tim.
i'll throw a rep up for kteller piping/ exhausts. i bouught a 2.5'' kit and threw a twin loop on it buit saved the rear for a straight pipe when its race day..love kteller!!!
@stefvids09 - parts cost $640 (Kteller kit, silencer, muffler). Labor cost is around $500.
rj1031 8 months ago
how much did t his cost u
stefvids09 8 months ago
This aint Lids ppl, its not one size fits all. On some n/a h22s and k20s (even stock ones) a 3" is just the right size that the exhaust charges dont lose velocity and create enough flow. Ive seen stock b16s that make loads of power on a 3" with the right header. Ive also seen a built k20 with a **** header & 3" piping make insignificant improvements to justify the costs. with the right header, a 3" with work wonders. More air + gas = more fumes. More fumes = need larger piping. /rant
TheMasada05 2 years ago
the trick to exhaust diameter tuning is first off: get a real header. You need a header with extremely specific length and diameter runners that will create a scavanging effect. This is when each pulse of exhaust from each individual cylinder creates a low pressure area behind the pulse, or charge, causing the next pulse to accelerate after it to fill in that void. Physics 101 ppl. the 2nd part is finding the sweet spot in piping diameter to continue that effect w/out slowing the gases down.
TheMasada05 2 years ago
@sporkjsp
Backpressure??? wtf, are ppl still going on about that old urban myth!?!?
Dude, I apologize if this comes off as disrespectful, but you need to study exhaust dynamics more. You are completely incorrect. This has been proven for over a decade now, "back pressure" is BAD. Back pressure is the lack of the vacuum effect the engine's exhaust system requires to operate. With BP, your exhaust pulses would get sucked back into the engine. You NEED exhaust velocity, not back pressure!
TheMasada05 2 years ago
3" exhaust for a car pushing under 250 whp is useless. you lose so much back pressure 2.5" is the best you can do until you hit that mark then get a 3"..
but none the less doesnt sound tha tbad
sporkjsp 3 years ago
on older honda B series motor, yes thats true. but on a K-series a 3" pipe has significant gains vs a 2.5". its proven, do research if you need proof and dont spread wrong info
96shox 3 years ago 4
i have done my own research, i own a 06 type s and ive done dynos with a 3" vs a 2.5" with cold air headers and i lost power using the 3" from when i had 2.5" so technically im not spreading wrong info.
sporkjsp 3 years ago
yet you didn't do enough research to see that your car only has one header, not headerS
somanymods 3 years ago
hahaha
06RSEXY 2 years ago
and you need more then i/e/h to gain from 3" people see gains with rbc intake manifolds...also kpro is a must
somanymods 3 years ago
people only have 1 manifold, not manifoldS
on a 05-06 i/h/2.5 e/ = ~215 wheel hp on a jet
+ kpro/rbc ~ 230ish with a tune, with a good tune 236ish, 3" is still too big of a pipe for that little power, now throw in some camshafts/valvetrain upgrade and run 3" pipe then now youre talking power.
sporkjsp 3 years ago
lmao cold air headers wtf
r3vhard 2 years ago 3
i agree its dyno proven for a k to make more power with a 3 inch vs a 2.5 inch exhaust especially if you have more supporting mods.
06RSEXY 2 years ago
that is correctt but if you have a turboo on any car 3inch is safee with out looseing no hp!
31compton13 2 years ago
you obviously dont know the difference it makes on k series motors
jdmxcreep 2 years ago
2.5" would've been fine.
You won't notice gains from a 3" exhaust until 400+whp... My man Corkey Bell said it himself.
Herooftheday64 3 years ago
god your so wrong.. go tell your friend hes an idiot or stop using his name. youll notice plenty of gains. infact here is a bet ill run both for ya if i do get gains you pay for the dyno, if i dont ill buy ya a sandwhich
hawaiiancb74 3 years ago
*Sigh*
You'll get a gain off of 2.5". You'll get a gain off 3". You won't gain anything going from 2.5" to 3" with a naturally aspirated motor. You'll only notice the "benefits" of 3" when boosted, or making 400+hp.
He's not my "friend", he's the the writer of a series of books discussing turbochargers, and forced induction dynamics.
You vs. Corky Bell (a guy who guesses vs. a scientist) = Me trusting the scientist.
Herooftheday64 3 years ago
come here ill prove it on a na motor..
hawaiiancb74 3 years ago
You obviously don't understand the limitations of differently sized exhaust systems, so this is pretty much pointless.
Before you go telling people they're wrong, make sure you can back yourself up with actual facts, instead of "come here ill prove it" which doesn't prove anything. Otherwise, I'll show you how an open 3" downpipe works.
Herooftheday64 3 years ago
If I understand this correctly, u guys r talking bout the size of the pipes. the downpipe is ok, but for a 200HP car, I would go with 2.25. 3 is huge like the man says for huge turbo cars, 2.5 is ok, but u will see slight little bit less performance over 2.25, not much!
drtrash11 3 years ago
3" on an N/A dc5-s?? power gains?
dc4t 4 years ago 2
This comment has received too many negative votes show
sounds like farts
Ottobon 4 years ago
is this the thermal 3 inch exhaust??
danrow1000 4 years ago
no. Kteller 3" inch with Magnaflow muffler with resonator.
rj1031 4 years ago
nice job with that rsx bro, sounds awesome...
TurboK20Z1 4 years ago
tnx!
rj1031 4 years ago
What can I say...these K20 motors loves big exhaust!!!
rj1031 4 years ago
power gains??
dc4t 4 years ago
h22, k20 ..etc.
they all love 3" regardless of mods.
stock h22 with bolt ons gained 12whp/7lbs after tuning when switching from 2.25 to 3". Look around on H-T and you'll find dynos
talon223 4 years ago
Cat-back is for sale!
rj1031 4 years ago
It's a cat-back.
rj1031 5 years ago
how did you get that sweet sound?? is it the resonator or the muffler?? and on the kteller website i cant find the Extreme Resonator...
japattaktypes 5 years ago
I think the sweet sound that you heard is from the combo of both the resonator and the muffler. The Extreme Resonator is only available at Morse Muffler in Burbank CA. (818)848-1058. Talk to Tim.
rj1031 5 years ago
how did you get that sweet sound?? is it the resonator or the muffler?? and on the kteller website i cant find the Extreme Resonator...
japattaktypes 5 years ago
how did you get that sweet sound?? is it the resonator or the muffler?? and on the kteller website i cant find the Extreme Resonator...
japattaktypes 5 years ago
Awesome setup! Glad you like the exhaust system. Thank you
Kteller Inc (www.kteller.com)
kteller8 5 years ago
i'll throw a rep up for kteller piping/ exhausts. i bouught a 2.5'' kit and threw a twin loop on it buit saved the rear for a straight pipe when its race day..love kteller!!!
06RSEXY 2 years ago