Quote Originally Posted by p3u View Post
HP claims are worthless as there are too many variables from dyno to dyno.

034 and IE are the two best tunes period. The test against time is the only true way to measure absolute performance and those two are the fastest.

With all that said APR is fine and unless pushing past stage 1 on 93 octane the difference is negligible. If you are going to go full stage 2 especially with E40 APR shouldn't be considered over the aforementioned companies.
p3u makes a good point (no surprise) about ethanol. Apr has 100 and 104 octane tunes but nothing for ethanol. If you’re looking to run an ethanol blend there are better options for sure, especially if you have a 2015 or older.