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OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
wait.... what??? how did changing your exhaust give you vtec? somethings not right here
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1994 Prelude S GONE!! F22a1 I/H/E ![]() 1994 Prelude S auto/manual swap The new daily(ish) driver. 1994 Prelude Si supercharged/h22a Parts car…. |
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
^ what he said, vtec doesn't engage unless the ECU senses pedal position, there isn't enough oil pressure, or the engine isn't up to operating temp.
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
What if old cat was clogged and replacement aloowed engine to breathe better and it can actually be "felt" now. Also engine isn't being "choked down" by back pressure and can breathe? I don't have VTEC or know much about it just trying to learn more and asking if this is a possibility.
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The best part of breaking something or messing up is learning how to fix it. 92 Si 4WS |
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
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![]() Last edited by RandallSharp; 03-31-2011 at 12:58 AM. |
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
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the cat theory is the only part of that that is true or possible, backpressure is a myth. poets, "Backpressure: destroying a myth," thread. - Honda Prelude Forum : Honda Prelude Forums and even then the op wasnt specific as to what exactly was replaced. he says "full Apexi exhaust" well apexi only makes catbacks for our cars, so its safe to assume thats what he meant. so he probably didnt replace his cat makin this guess completely irrelevant.
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http://www.preludezone.com/product-r...hift-knob.html |
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
^ True, ideally you wouldn't want back pressure but in the event of a clogged exhaust or cat it would cause back pressure. I have seen many cars that had bad cats shut down while driving at highway speeds due to building up too much back pressure and not allowing the engine to breathe. Remember the old banana or potato up the tailpipe prank kids used to pull years ago? Same pricipal. We aren't talking about oversizing the exhaust or needing back pressure just getting rid of it.
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The best part of breaking something or messing up is learning how to fix it. 92 Si 4WS |
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
Although that article is extremely correct, back pressure is NOT a myth. It is simply a term thrown around in the automotive world by completely misguided people. It exists, just not in the way most people believe.
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
Agreed. It isn't "needed" as the article states. However a free flowing or even "flow promoting" exhaust is essential for proper engine performance. Last I'll comment about it getting away from OP topic.
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The best part of breaking something or messing up is learning how to fix it. 92 Si 4WS |
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
I never heard of the exhaust making the vtec work but its working now so praise to you for getting vtec power back lol...
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
lulz wut?1! you guys are reading that wrong. he said he got his vtec to work then he put on the new exhaust which felt better. right?
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![]() J.L.D.E.P.P.M.S.3.C.N.Y.C.N.C.A.D Jams Lobsta Denny EA Peter Prelude Miata STI 300zx club of NY and Canada and NC All Day. #MadeMorePowerThanJoshClub Bustr Built Built in America. H23A1 2.4t VTEC Project |
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
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"if i only did the exhaust ALOT sooner, i would have saved so much money LOL.. i knew my vtec didnt engage because of something small, and sure enuf if was the exhaust..!! jus lettin you guys kno"
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
missed that part lol
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![]() J.L.D.E.P.P.M.S.3.C.N.Y.C.N.C.A.D Jams Lobsta Denny EA Peter Prelude Miata STI 300zx club of NY and Canada and NC All Day. #MadeMorePowerThanJoshClub Bustr Built Built in America. H23A1 2.4t VTEC Project |
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
I don't believe he said whether or not he replaced the cat or not. I can tell you from personal experience with my current car (H23A1), the cat that was on the car when I got it was so clogged that I couldn't hit 5K RPMS. Before I got there the motor would completely choke because of the massive restriction in the exhaust flow.
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Prelude Enthusiast: [prel-yood, preyl-, prey-lood, pree-lood], [en-thoo-zee-ast, -ist] noun: Someone who is willing to do whatever it takes to push the envelope, performance wise or stylistically, all the while brushing their shoulders off in a truly pimp-esque manor. See also: Automotive Pioneer |
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
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when i first started my car when i got the exhaust put on, i actually felt and heard the air go thru the intake and travel thru the pipe when i rev'd it... as soon as i did that, i KNEW something was up, it felt SOO different.. (ina good way).. so yes, it was the cat. im sure it was hella clogged... when i punch it now, it feels like its "breathing" ALOT better, prolly thanks to my high flow cat now as well.. but man! the important thing is that i now have vtec!! >:-D |
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
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this is exactly what mine did!! like i said, the cat was never an idea of mine. so i never looked at that part of the car... jus motor stuff.. =/ ..but now, OMG im lovin it! |
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
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it did not engage before. |
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Re: OMG!!! I'VE GOT VTEC!!!!!!!!!!!!!
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so when i exchanged the exhaust to a high performance one, air could actually travel thru.. (my guess).. but ****, who cares! the important thing here is that i changed my exhaust and got vtec hahaha |
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