your mailbox is full, so I can't reply to your p.m. via the p.m. function.
here is what I attempted to send you...
I don't have any "hate" or personal grudge against you, but I don't put up with people posting false advice in the forum. people ask honest questions about their cars, because they are going to use the replies to aid in making a serious decision with their vehicle. by you telling someone that they would benefit most from 2.25 or 2.5" exhaust piping with their turbo'd Honda, you're deceiving that person and leading them down the wrong path.
The difference between a turbo'd Honda using 2.x" exhaust piping and one using 3" piping is very significant. We're talking 30, 40, even 50+ whp gains after merely adding appropriate 3" mandrel-bent exhaust piping as opposed to staying with a 2.x" system which is better suited for naturally aspirated cars.
What it comes down to is; the proper thing to do is wising up before posting up. If you don't know the correct answer to someone's question or can't offer good advice, then simply refrain from click the reply button. No-one knows everything, however we help each other out in an honest fashion here at SHO. Posting false information is not an honorable style.
you have no right to say that i have given false advice, the advice i gave was not based on my own opinion, it was based on what i read. i never said i dynod any cars or am a rocket scientist that can calculate in all the factors that go into making a well made exhaust system.
i think that the question was made in an unclear way. a 3" exhaust will probably yield more hp, but in the longrun, a smallar diameter pipe is needed to breath correctly.
i really don't know the mechanics behind it, i was just offering stats that i got from a book. and other members of sho explained why 2.5 would be of benifit, but you didn't seem to read thoes.
allow me to quote:
Quote:
Now If you are only running 8-10lbs of boost and only making like 225-275hp there really is no need for 3"exhaust, you really dont want to go to big, yes your turbo will initally spool quicker with a 3" exhaust but there will be more back pressure because there will be a significantly more volume of air to get moving, ultimately hurting performance. Think about it , when you are driving, you are not constantly flowing the same amout of exhaust out of the system, it is constantly changing speed up and down from accel and decel and shifting gears. when building a exhaust system you want to be able to move the exhaust out of the system as quick as possible with the least amout of restriction. so its all about tunning and compromising
is this person posting false information as well. because he is saying the same thing that i had said, he just explained himself better.
no actually 3 inches are the best, the exaust has pulse waves, and with turbo the pulses get huge. So as you can probably understand you need a bigger pipe to be able to get those pulses out. If you have a smaller diameter you have back pressure. And back pressure = bad. civperc is very correct in what he has just stated. You really should not give advice unless you have really studied the matter at hand.
Originally posted by OmegaHack95LS You really should not give advice unless you have really studied the matter at hand.
im not giving advice, im quoting from corkey bell
if you wanna know the reason that i knew of this information that corkey bell had printed in his book this is how i got it. someone had posted quite a while back on that very same question, and i was quick to reply and i told that person that 3" was best and the biggar the better. then i got replys from other members saying that i was wrong, and in my search to prove them wrong i went to that book and i looked it up and sure enough, i was wrong. so i posted that i made a mistake and i explained that upon reading i found that i was in fact wrong.
thats the only reason i even replied to that thread. i was thinking i was helping him out and saving him some money at the muffler shop. but as it turns out, aparently thoes people that corrected me were wrong...
Originally posted by OmegaHack95LS ah but yet you are giving advice, if you told him that 2.x would be better than 3 you are giving advice. I am giving advice right now.
in the book i read, it said quite clearly that 2.5 was better than 3"
and omega, this wasn't suppost to be an open discussion, just a message, and i have been told i was wrong by enough people that i dont need your opinion.
in my book here it also states that the tailpipe diameter should be taken into consideration in the diameter of the tailpipe.
often, the internal wastegate relies "on an increment of back pressure in the tailpipe to function properly"
and when a tailpipe fails to produce backpressure, it can cause the turbo to overboost.
were not talkin bout a internally wastegated turbo, where talkin bout a externally wastegated turbo. turbo's don't like back pressure!!! a 3 in exhuast will not hurt sh*t. It will only help spool faster and gain whp... Also is corky bell some kinda turbo god or what???Well i talked to a real turbo "GOD", His name is Tony and he works at Jotech. Did i mention that he builds jotechs 8 sec car...He said that a 3 in exhaust is best. If a car is makin 200whp on a 2.5in dp and exhaust and he switched to a 3in dp and exhaust he WILL gain whp. If you don't believe me ask tony himself....
Originally posted by flip1199 were not talkin bout a internally wastegated turbo, where talkin bout a externally wastegated turbo. turbo's don't like back pressure!!! a 3 in exhuast will not hurt sh*t. It will only help spool faster and gain whp... Also is corky bell some kinda turbo god or what???Well i talked to a real turbo "GOD", His name is Tony and he works at Jotech. Did i mention that he builds jotechs 8 sec car...He said that a 3 in exhaust is best. If a car is makin 200whp on a 2.5in dp and exhaust and he switched to a 3in dp and exhaust he WILL gain whp. If you don't believe me ask tony himself....
don't get all upset about it man, i agree that turbos don't like backpressure, and i agree that 3" WILL gain hp.
ignoring the rest of the stuff you said because it had nothing to do with anything.....
how come turbo subaru rally cars and other turbo rally cars have huge back pressure and create big pops with flames. don't they run 3" pipes?
Originally posted by flip1199 were not talkin bout a internally wastegated turbo, where talkin bout a externally wastegated turbo. turbo's don't like back pressure!!! a 3 in exhuast will not hurt sh*t. It will only help spool faster and gain whp... Also is corky bell some kinda turbo god or what???Well i talked to a real turbo "GOD", His name is Tony and he works at Jotech. Did i mention that he builds jotechs 8 sec car...He said that a 3 in exhaust is best. If a car is makin 200whp on a 2.5in dp and exhaust and he switched to a 3in dp and exhaust he WILL gain whp. If you don't believe me ask tony himself....
kinda off topic but...after reading this whole post, i went to another honda site and some1 else was talking about corky bell...it made me chuckle.
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no more s14...just an f4i and a "wonderful" 92 izuzu pickup...
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