[SeanWRT]

Daleb, just read your message and post here.

Believe it or not, with stock turbo and pump gas, fueling upgrade is NOT helping much, if any at all. Unless you always have extremely cool IAT, which just means more octane.

Octane is always always by FAR the first and biggest restriction of most platform, especially N55.

You experienced "substantial" improvement from supplemental fueling with previous N55, only because your previous N55s do NOT make top end power at all unlike M2. You were short shifting all the time staying 4~6k where hpfp is the weakest.

With M2 stock turbo, you probably should use 5k~6k5 a bit more. After 5k5, it is all about octane with stock turbo. So will you benefit from more boost (3~5k) that's only possible with more fueling? Yes, you will, but WOT acceleration will benefit at a much narrower power band (4K5~5k). Above 5k, you'll be trading timing for boost. Above 6k, you can don't even get close to stock fueling limit given the octane. Again, unless you always have extremely cool IAT (below 70F).

The map you have is as strong as a pump gas map gets. Do not be obsessed with hpfp slightly dip here and there. Doesn't matter at all. And you will NOT want to have more boost any more.

Do proper pulls and I think you'll be in low 9s. Don't believe these high 8s result. Ambient Condition differs.

If you really want to be faster with M2, upgrade turbo. Or trade in for a competition.