I'd like to install a cat-back on my 91TT. Can anyone offer an opinion and suggest a particular system given the the following

1. The car is stock, at some point I plan to add a ECU upgrade and pop charger. No other mods are expected.
2. Noise, I wish to stay as close as possible to the stock sound and minimize the sound level.

What kind of performace increase might I expect with just a cat-back intstall?

Thanks Much

 

Genie exhaust which in no longer in production is the quietest.
I know someone selling a used system if you're interested. www.SpecialtyZ.com sells some fairly quiet systems if you'd like something brand new.

Just a cat back install will give you @10hp or so without any other modifications, maybe more depending on your car's state of tune. Stillen's chart says 20+hp, i think that's being optimistic.

 

I believe the Stillen system is quiet as well.

 

Riz Z Speed, yes I might be interested in the used Genie exhaust. I noticed you live in the Chicago area, as I do also. Can you look into what your friend is asking for the system?

Thanks
Kevin

 

Thanks all for the input

 

Griff's system was a Stillen, trust me, it's not quiet compared to the Genie.

EDIT: Griff had the green Z you see in my sig.