Quapa

Hello,

New here. Recently sold my wrx and picked up a 2015 gs 350 f sport. So far it’s a great car, however I like to personalize my ride a bit, much like I did with my wrx.

I’ve been looking at tunes, intakes, and exhausts and came across RR-Racing. I think I’m going to go with their intake and tune, but I’d also like to get a catback exhaust for the sound and gains, but $2500 plus the cost of a new rear diffuser because the Apexi exhaust isn’t compatible is a bit much. I’ve searched for alternative options but am only finding axle back.

1. are there any other catback options on the market
2. that are compatible with the rear diffuser

thanks!

jgscott

iTrader: (1)

Welcome. You will find more Performance mod stuff in the 2nd Gen IS350 forums. The GS forum has gone from 1000+ hp GS's Gen 2, to little to no interest in performance nowadays in the last Gen 4.

Exhaust are many. In Axel back. Deleting the secondary Cats is the best switch. Of course if track use or Off Road only, for the Record. If you use a full Catback. For sure it will be excessive drone, Apexi included.

My choice for Intakes is the AEM based on results. Ingen and other make one also. The Drop in K&N with K&N Tube performs well. The full K&N with Cone filter is even better with Tune and Exhaust.
The latest other choice for Tune options is the D3 Performance and Tune By Loi.

Lots of 2GR same engine and Trans info here with Exhaust, Intake, Headers, Tune and other Mods, and testing if you search through.
https://www.clublexus.com/forums/performance-199/

Meraki Autoworks

iTrader: (8)

Only midpipe choice is Apexi, but you can use any other axle back. Borla, Revel, Invidia, etc.

We can get you taken care of, we do these all the time.

-Josh