[flypenfly]

I have a 2015 228i with the M Sports package and I recently installed new NGK OEM spark plugs, new MAD intercooler and charge pipe and flashed with this map attached. Using 91 octane California gas.

I assume that’s the correct map I should be using?

According to the site, I should see a 48% HP and 54% TQ increase?

So from stock 240hp/255tq I should be at 355hp/392tq? It doesn’t really feel like it though.

[flypenfly]

Nevermind, I was stupid and looking at the wrong spec, I should be looking at:
N20 (low-compression 28i)
Stage 1 91 octane: 16%HP / 20%TQ

So for me should be 278hp/306tq.

Now that feels about correct.

[marchystar]

Heh yup I went through the same upgrade and returned by Bootmod3 license.

Went back a few months later having done the downpipe, charge pipe and boost pipes with the Stage II tune and wow - the peak numbers don’t even do it justice.

The Stage I honestly felt like stock unless you pushed it past 4000 RMP, the Stage II is the way this car should have been from the get-go. It’s a delight and you feel the difference at 2000 RPMs, driving feather light.

Now time for my intercooler and intake upgrades to support the extra heat created - my turbo was glowing red after 15mins of spirited driving. 😬 Definitely needs those supporting upgrades!

[n55david]

If there is a 91acn map you NEED to use that one. California fuel is straight trash and their 91 is more like 89.