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3 in cat on a KA???

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Old 05-12-2006, 08:28 PM
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3 in cat on a KA???

i want to know the pros and cons of having a 3in cat ON a KA engine...nonturbo
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Old 05-13-2006, 06:12 AM
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Pros better flow, cons, none
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Old 05-13-2006, 06:34 AM
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with a 3 inch it will be really loud, but ive heard that 3 inch is to big on an N/A car. you should probably go with something like a 2.25- 2.75 diameter.
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Old 05-13-2006, 01:12 PM
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maybe with full 3" it will be loud. i dont think that loud personly. me and my buddy both run a 3" cat on our n/a ka-e's and the only difference it made was more torque on the butt dyno. you'll feel a bit of difference in the mid to top end range. i beleive ive read somewhere someone tested 3" full exhaust on a n/a ka and it actually made more power/torque as where most non F.I. 4 bangers would have lost power.

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Old 05-13-2006, 05:37 PM
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well i guess 3 inch is ok. ive seen acouple people have them on n/a ka's. its probably close to pushing it tho. i would go any bigger than 3in on an n/a. any bigger your loosing power instead of gaining.
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Old 05-13-2006, 06:48 PM
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Originally posted by 1993Coupe
well i guess 3 inch is ok. ive seen acouple people have them on n/a ka's. its probably close to pushing it tho. i wouldn't go any bigger than 3in on an n/a. any bigger your loosing power instead of gaining.
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Old 05-14-2006, 10:28 AM
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A 3 inch cat isn't going to really do anything, won't be louder either. Exhaust piping is still small...
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Old 05-14-2006, 10:28 AM
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i run a full 3" exh on n/a ka... it is decently loud. will be running a full 3" turbo back shortly
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Old 05-14-2006, 10:58 AM
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wait are you talking about a 3in catback or a 3in catylitic converter. im with s13240 if your talking about the converter but if your talking about a cat back i still go with what i said.
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Old 05-14-2006, 03:12 PM
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I think it's prove that 3" gives more power gains than anything smaller on an NA KA.
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Old 05-15-2006, 03:47 PM
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which exhaust brand offers 3 in cat? apexi?hks? if not then which one does?
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Old 05-15-2006, 03:57 PM
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most aftermarket sr20 exhs are 3"
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Old 05-15-2006, 09:22 PM
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most ALL available "Turbo" exhaust systems on the market are 3". as with most N/A exhausts are 2.50"/2.75".
google is your friend.
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Old 05-16-2006, 03:49 AM
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Can you please answer one thing? When you keep saying cat, are you talking about a catalytic converter or a catback exhaust? If your talking about a full exhaust please say so, because saying your looking for a cat is something totally different.
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Old 05-16-2006, 11:57 AM
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catback not catalytic converter...
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