[bb2405]

Looking for high flow cats for the 535i

don't want to void the warranty on the car but want the power. Currently I have a quad Megan Racing axle back exhaust system and id like to get a little more noise but with as little drone as possible

thanks for the help

[78mao]

no one makes them! i had downpipes, but u are going to have CEL no way to fix it as of now from what i was told even with a tune.
hit up rsituning.com

[bb2405]

Originally Posted by 78mao

no one makes them! i had downpipes, but u are going to have CEL no way to fix it as of now from what i was told even with a tune.
hit up rsituning.com

do you think it's worth it or not?

[78mao]

definately a difference in sound and power!

[ojp5q]

Originally Posted by bb2405

Looking for high flow cats for the 535i

don't want to void the warranty on the car but want the power. Currently I have a quad Megan Racing axle back exhaust system and id like to get a little more noise but with as little drone as possible

thanks for the help

I have a custom made downpipe with a high flow cat installed on my car and there is a DEFINITE increase in power. The turbo sounds very nice too.

I'm selling it pretty soon. PM me if your interested.

[BigP535I]

op, not to high jack thread but my question is within the same thing....I'm having a custom exhaust system made but not touching the downpipe, anyone know if theres a cat after downpipe? If not replacing downpipe and the rest of the piping has no cat will I get a CEL?