straight pipe and no cat

hey guys just a noob as question..
is there a purpose of having a straight pipe and no cat?
is der any gains?
or its just there for a sound?

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Originally Posted by moogle

hey guys just a noob as question..
is there a purpose of having a straight pipe and no cat?
is der any gains?
or its just there for a sound?

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straight pipe without cat is used to create better airflow without any restriction, therefore will create extra power. but again, it all depends on what you have done on the intake and header side of thing (or even internals).

its all about balance.

Quote:

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Originally Posted by blk_shadow

straight pipe without cat is used to create better airflow without any restriction, therefore will create extra power. but again, it all depends on what you have done on the intake and header side of thing (or even internals).

its all about balance.

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wouldnt balancing be the same as having the right inlet size for headers,cat muffler and other pipping?

how come other drivers can get away of having no cat and a straight pipe?

You might get defected... depends how old your car is =P
my e30 came out stock without a cat

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Originally Posted by TONTON

You might get defected... depends how old your car is =P
my e30 came out stock without a cat

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And they're gangsta.

IMO, even if you get the cat for a 'just incase' its worth it (bearing in mind many do it, many get away with it and it sound noiice)

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Originally Posted by SHOGUNOVDDRK

And they're gangsta.

IMO, even if you get the cat for a 'just incase' its worth it (bearing in mind many do it, many get away with it and it sound noiice)

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i havent heard a car with no cat or a straight pipe ay lol
i want to tho!

some people have a custom cat and just have a fake one?am i right?
but wouldnt that produce smoke out of the exhaust?

Quote:

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Originally Posted by moogle

wouldnt balancing be the same as having the right inlet size for headers,cat muffler and other pipping?

how come other drivers can get away of having no cat and a straight pipe?

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what I mean is 'balance' as in total balance between 'in' and 'out' (like intake header and exhaust for example) not 'balancing'

cos there are ways on playing around with the diameter of the pipings to create more power. or do it wrongly, reducing the power.

There were a few people at the Ikea meet with straight pipes.

People usually buy a aftermarket cat with there headers etc and use that.

Xforce have good cats I'm lead to believe (as of recent)

V I'd personally use that more.

otherwise, magnaflow have some decent cats as well

No cat = $10,000 fine from EPA. Go high flow cat and also get a defouler to avoid check engine lights. High flow cats are better than a 5 digit fine.

hmmm well ive got a custom headers and a cannon muffler and ive noticed a big difference i used to change gears 2k with oem exhaust and headers now i have to change gears at 3k...is that a good thing? and wit ha high flow cat will make any difference?
im currently running a d16y4 but b16 is real soon!

lol sorry for wasting your time guys

if your going to get a b16 real soon, no point modifying your car atm, might aswell save up..