Removed cat...

[Ripp87Turbo]

Hi, I own an '87 951

I recently removed the cat from my exhaust and replaced it with a steel straight pipe.

I was told by someone that this was the completely wrong thing to do and that the car won't run right due to incorrect backpressure. I think otherwise.  I would like an opinion of whoever cares to respond. Much appreciated.

[STEVEMCMORN]

Oh - sorry - can't help .... I only openned this topic as was ex[pecting to see some cool pictures from summitthock:

[Larry Herman]

Your "otherwise" thinking is correct.  Your car has plenty of backpressure with the turbo itself, and any further back pressure beyond that merely hurts performance.

FWIW we put a Fabspeed 3" exhaust (no cat) on my son's 951 and it really woke it up.

[michael lang]

+ you gotta love the extra noise it makes