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Hi, I have a BMW M50 tuned on alpha N, it runs pretty good, i have tried speed density but the engine doesn’t have great vacuum, so bad resolution. Now I installed a rotrex supercharger. Any suggestion tuning wise to have accurate afr.
Running a Plug and Play Kdata Ecu, based on a Mega Squirt 3 I belive, Tunerstudio.
BMW M50 stroker 3.0L 11.5:1 CR
M54 Intake cam, M50 non vanos intake cam on exhaust
Rotrex supercharger 6-7 psi
440cc injectors
Water Meth injection
Tunerstudio based ecu
You can leave the TPS based fuel table. Make sure you have a properly scaled MAP/fuel compensation table, whether this is in the VE calculation or you add it manually. The VE of the engine won't change from NA to positive manifold applications. You will just need to ensure you can properly scale the fuel % for the changes in MAP. You can leave the TPS based fuel table.
