I know its here but I'm lazy and the quick search did not tell me the answer

From the JDM 4-1 to the USDM cat back, How long does the test pipe have to be?

Simple huh?

thanks.

 

17 inches budddddyyyyy

 

have a smsp carsound cat fits eprfect with flanges and o2 bung used 3000 miles. let me know if interested

 

No thanks, I'd rather run a test pipe then have a carsound rattle brake and die on me.

 

unless this is a race only car please don't run a test pipe and kill the environment

 

I just needed to get the size so I stated test pipe for simplicity.

 

I measured my carsound and it was 17". I bought a T1R testpipe and it measured 17.5". I was worried the T1R wouldn't fit, but It actuallty fits better than the carsound. My carsound didn't fall apart. I ran it with a Mugen N1 ecu for a month or so. All I can say is REMOVE the heat sheilds on the Carsound before you install it. This will save you time in the long run.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bbasso &raquo;</TD></TR><TR><TD CLASS="quote">No thanks, I'd rather run a test pipe then have a carsound rattle brake and die on me.</TD></TR></TABLE>

Is there any aftermarket cat that last? Hate to change out oem one for headaches.

 

The Renault used by Hytech is supposed to last 100000 miles, it's not the cheapest though.