flanders

Stock exhaust is 60mm and I think it's always best use same diameter on the test pipe.
Invidias cel fix is kind of a mini cat thing inside the test pipe.
It usually doesn't work very good so you might as well get the regular version and buy a separate CEL fix.

Behradsays

Okay, gotcha. I'll look into the other method for the CEL Fix then. Thanks!!

Ham8urger

So will an 04 ap2 get CEL with the test pipe and CBE?

superchargedk20

You will get a cel unless u run some sort a cel fix. I recommend the curcuit werks tp on ebay. It's cheap and it comes with a 90° angle cel fix that u bolt on. I've driven with it for a few weeks now with no cel

Ham8urger

awesome i may go for that one

Arthas

Hey guys quick question, will replacing a straight RSG 70mm test pipe to a 2.5 resonated Megan test pipe quiet down the exhaust tone ?? I have a 70mm invidia dual and once I swapped out the OEM cat for a RSG test pipe, it got too loud anything over 4.500 + the vehicle screems for attention. Any input would be great, the car is not a DD and it gets driven twice or three times a month.

ERNESTO_DOINIT

Okay so I just bought the Evs tuning 70mm ssp exhaust I bought it a cat back but now my boys are saying I should remove the cat and get a test pipe ? What do you guys think ?

alSpeed2k

^I think it does make more power, but I didn't like the smell so I replaced it with a high flow cat.