Fabspeed Exhaust -- Too Loud?

[jhandy]

Johnny,
The headers with 100 cell cats are very free flowing and when combined with the secondary delete and the muffler, there was not engough backpressure.

Low end torque was fine with the cat deletes and muffler, the headers where the problem. replaceing the OEM muffler fixed the issues, and it is easier to change than the headers.

[ocoeeboxster]

Originally Posted by jhandy

Johnny,
The headers with 100 cell cats are very free flowing and when combined with the secondary delete and the muffler, there was not engough backpressure.

Low end torque was fine with the cat deletes and muffler, the headers where the problem. replaceing the OEM muffler fixed the issues, and it is easier to change than the headers.

Is the m22 ss a basic bolt on for the non s cars or will there need to be some modified install done?I got a shop that will do the install for $200 as long as it doesn't get complicated.

[jhandy]

bolts right up. Taking off the OEM is the time consuming part. Some people do it without taking off the bumper. Tried that once, have the knuckle scars to prove it. Its possiable, but taking off the bumper will save time.

[Johnny Danger]

Originally Posted by jhandy

Johnny,
The headers with 100 cell cats are very free flowing and when combined with the secondary delete and the muffler, there was not engough backpressure.

Low end torque was fine with the cat deletes and muffler, the headers where the problem. replaceing the OEM muffler fixed the issues, and it is easier to change than the headers.

I agree with you in so far as 100 cell cats are a bit too free flowing for street applications . Moreover, the ecu has to be re-mapped in order to avoid CEL's, and keep the vehicle OBD II compliant . With that said, the combination of a freer flowing cat-back , along with deletion of the secondary cats, in my experience reduced back pressure to the extent that low end and mid range torque suffered . This deficiency was remedied by switching to 200 cell cats, along with some exhaust reconfiguring .