Bought my car with an Invidia already on it. looking to buy a hi flow cat. Is there any way to tell if my invidia is a 70 mm or 63 mm by sight? If I should have to measeure, where is best to make this measurement, and how (besides wrapping a measuring tape around it)

 

At most auto parts stores you can buy a plastic set of calipers for like $1. They are mostly accurate and would work fine for this job.

 

Best thing, sell it.

 

just measure it with a ruler or measuring tape. you can measure it anywhere EXCEPT the muffler tip, or where the exhaust meets the cat. my advice to you is skip the high flow cat and get a test pipe.

i have to disagree with txs2knoah because from my experience, invidia is a top quality product which performs excellently if you can stand the drone. i've had 3 invidia exhausts.

 

annoyed that the Invidia sounds better and probably makes the same power as your t1r? jealous much?

 

Yeah, that's a pretty uneducated statement. I've run both the Invidia 63 and 70 Testpipes, top notch quality, no issues.

catbacks, I wouldn't know, never owned one.

 

to both of the above guys...i think txs2knoah had an invidia single before

 

Allow me to clarify, I was referring to TP's.