Looks like RR Racing has released a tune for our cars. The 2IS seem like they've had good results with this tune.

http://www.rr-racing.com/RR-Racing-L...gs350tne02.htm

 

Even though I'm sitting here, shaking my head and thinking "$500 for that little of a gain?" to myself, I'd probably do it to my 460 because I feel so robbed of the 38 hp Lexus took away when putting the same motor from the LS into the GS, haha.

 

I can't wait for these cars to get unlocked to be able to unleash some mods. imagine a 100 shot 460

 

Exhaust and this tune should make for decent gains. At least you guys have way more than 303 hp

 

Been waiting for an ECU upgrade for the 430s, gas mileage went down eversince I threw in the test pipes. Tuning it will make everything more efficient again.