jgordon089

I'm reaching out to the knowledge base in this forum to provide some data (preferably dyno charts) for the various aftermarket exhaust systems you can purchase for the GS V8.
I have a 2001 GS430. To date I've done the SRT intake and that's it. I am very impressed with the results. I now have the S&S headers on order and also want to add a cat back or rear aftermarket exhaust system. I'm very concerned about loosing low end Hp/torque because it seems to me many of these system have oversized piping. I fully understand a cat back or rear system is going to yield very little power gain by itself, but I certainly don't want to loose low end power.
With that being said, who can enlighten me with performance dyno data on various aftermarket systems? Carson?. GREDDY EVO2? Tanabe? etc......

PLEASE HELP!
Thanks

DaveGS4

iTrader: (2)

https://www.clublexus.com/forums/sho...t=exhaust+dyno

Welcome to CL! This is the only before / after dyno on exhaust only I recall specifically, but think there was one other. Similar results <2hp

jgordon089

Thanks Dave,

That is one sweet GS you have.

Anyone else know of any other results? How about recommendations on systems based on their pipe diameters, etc....?

400DGRZ

iTrader: (2)

Jgordon,

what kind of numbers did your SRT intake/ecu produce on the dyno?

jgordon089

Don't know. I didn't dyno the car before or after the SRT intake. This is a mod that you do feel in the seat of your pants. Also sounds mean at WOT.

I'm not so concerned about gaining any real power with an exhaust, just don't want to loose any power anywhere in the RPM range. I have a question in to S&S headers to see if they have a recommended system to compliment their headers. I'm sure they have some dyno data.

BC-GS430

Most of the people with S&S headers tell me its more responsive. I have the carson tuned cat back and i think it matches the srt intake very well.