Here’s a good comparison of what can be done using tuning alone. Kyle came to us with a very lightly bolted 2011 MazdaSpeed3 with a knack for knocking so the tuning had to take this into account. This car has an intake, upgraded fuel pump, and a test pipe. That’s it! Stock downpipe, stock intercooler, stock turbo, stock motor.

The deltas (changes) in horsepower and torque is what matters here, not the absolute numbers.

Going from the COBB OTS to the Stratified gas tune, there was a 13whp gain and 27 ft lbs of torque which is very respectable given the knock limitations of the fuel..

Going from the Stratified gas tune to the E85 tune, there was a 62whp gain and another 39 ft lbs of torque

Overall, going from OTS to the finished Stratified E85 tune there was a gain of 75whp and 76 ft lbs of torque. These logs were also taken in hot weather (especially the later ones) so expect these numbers to get better as the temperatures drop. The boosted air temps in the first COBB OTS run peaked at 116* F and in the last run they peaked at 132* F. You will not see any other part you can bolt onto the motor give you a better bang for the buck.