ECU file service - stage 2 map for N55 with meth injection

3 months ago· 11 posts

Looking for a file service that can provide a stage 2 map for N55 with methanol injection support. Most tuners only offer stage 2 on pump fuel. Car has: - Catless downpipe - FMIC - AEM water/meth injection kit - Stock turbos Want to maximize power on the stock turbos with meth. Target is 450hp+. Who can do this?

2 766

Replies (2)

N55 Gang

26 days ago#1

Running a similar setup on my 335i. Stage 2 with meth injection on the N55 is a sweet spot - around 400-420hp depending on the tune. Make sure your meth kit has a failsafe that pulls timing if the meth runs out. Snow Performance Stage 2 kit works well for this.

14 posts · 0 rep

HybridTurboGuy

25 days ago#2

The key with meth injection on N55 is the nozzle placement. Mount it after the intercooler, before the throttle body. Use a 175ml/min nozzle for stage 2 power levels. And always run a 50/50 water-meth mix, not pure methanol - the water helps with cooling.

16 posts · 0 rep

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