If you wanted a tune prior to headers what kind of gains would you see? Dont mind spending the money to retune later but curious as to what gains you would see whp prior to headers. Res ti exhaust and pulleys

 

About +7 whp with RR racing. You gain a lot in the midrange, though.

 

Depending on which tune you go with, should see a bit of a bump in midrange and typically better throttle response. Peak seems to still be limited by the primary cats though.

 

Should be over 400 whp with tune and exhaust correct ? Headers FTW for sure later down the line. American racing headers if you get those you have to swap out the Catback to 3 inch ? I really like those.

 

should still be over 400whp with just a tune and exhaust correct ? When the time comes I really like the American racing headers but unclear on the size of them and if you have to swap out to their exhaust

 

For another option, might take a look at Loi’s Instagram @tunedbyloi for examples of some of his work.

I just recently had my ‘21 dyno-tuned by him (everything stock for powertrain/intake/exhaust) with awesome results. Gains throughout the entire rev-range along with all the other drivability improvements. It feels like what the car should have been OEM.

This particular dyno did not have load control, so add 5-10% if you want a rough-range comparison to other DynoJets; although comparing sheets from different dynos is kind of silly...

Also, a small amount of e85 was added between the stock run and the tuned one listed here. This was because the Costco fuel I had at the time was not the happiest octane-wise (which is apparently fairly common due to add-pack differences) and the intention was to try to bring it up to other 91ACN fuels like Shell, etc.
This is 6th gear btw.

 

You can search for RR racing dyno thrashing thread. Stock is around 390 - 400 whp SAE corrected and with full bolt on and tune, around 450 - 455 whp. With E85 tune, up to 480 whp had been achieved

 

solid numbers for sure with just a tune and everything else stock.