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Basic Intake and Exhaust Modification Guide, for normal aspirated cars v1.0
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Ultima
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 Jan 20 2008, 10:44 PM
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QUOTE(Relish @ Jan 15 2008, 11:19 AM) Pardon my noob question, i went to exhaust modification shop at my hometown, i wanted to change extractor to 4-2-1 since im always travelling on highway to work. but the boss say auto can only use 4-1. izit true? btw, im using toyota corolla AE111 auto. any good extractor to recommend?  thanks auto is best using 4-2-1... tht boss is screwing u hard |
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Ultima
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Oct 12 2015, 04:45 PM
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sifu,
im driving persona year 2009, original campro.
due to crack manifold, i hav chg it to 4-1 extractor (stock using 4-1 iianm) and decat.
b4 this, i m very satisfy wif stock exhaust system, wif only chg in muffler (marco).
but after chg to 4-1 extractor and decat, i suffer loss in pickup. its a huge diff if u ask me, need to rev up hi n very noisy sound at the engine.
if lets say i wan to hav the same setup as stock which is:
stock manifold(4-1) > catcon > midbox > muffler
but right now mine is:
4-1 extractor > midbox > muffler
if i put bullet which will become like this:
4-1 extractor > swirl bullet > midbox > muffler
will i get the same (or at least a lil bit same) setup like b4?
im driving every week for 4 hours straight, so long distance driving is making me crazy wif this condition.
thnx
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Ultima
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Oct 12 2015, 07:22 PM
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QUOTE(Max @ Oct 12 2015, 06:24 PM) should use 4-2-1 extractor if u want more power on low n mid rpm rev.. 4-1 shift the powerband to upper band.. mid to top rev.. Yes, i do know 4-2-1 advantage. But Stock one using 4-1, so it shud stay the same if im using 4-1 also right? But y sudden loss in power? I juz wan the same as i got b4 chging the extractor. So will adding bullet gimme the same or maybe a bit like b4 |
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Ultima
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Oct 13 2015, 01:33 AM
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QUOTE(Shanashi @ Oct 12 2015, 11:39 PM) brader auto or manual? sounds like auto...if auto u need S-flow muffler u can stick to the 4-1 but change to sflow muffler or change to 4-2-1 as mentioned above....either way u need to change 1 lol u dont need to add another bullet the result will be the same if your car is manual u should benefit from the less restriction and rev that bugger Mine is auto. Oledi using s flow muffler (marco) so dunno whts wrong. Now the only remaining stock is midbox. Shud i chg it too? Wht type shud i choose? Swirl? Bullet? Spiral? Etc.. |
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