ov tune with exhaust?

i know exhaust doesnt really do anything, but with ov tune is there any measureable gain?

 

With the premium SFOB im running, there is definitely a gain. Truck feels like it has 20% more power, especially down low. The great thing is, mpgs stayed the same and maybe got a bit better.

I have the borla cat back too, sounds fantastic by the way.

 

hmm, good to know.
i know usually exhaust systems dont typically work well unless they are paired with a tune. So this is good to know. Im looking at a gibson system. Its stainless which is nice, and isnt much louder than the trd.

 

I installed the borla when i had the stock tune, and it worked well IMO. Sounded great and maybe a hair better at low end. Borla is made with aircraft grade 304 stainless steel, FWIW.

After i installed the performance tune, the exhaust did get louder a bit, which i actually prefer. I have the "poor man's trd intake" as well, which sounds fantastic.

 

What happened to your engine cover? Is that dirt or some type of corrosion?

 

Just dust from offroading in the summers, it doesnt bother me.