[dannichols1474]

Now that I have verified that a new TPS has solved my ITB EFI drive-ability problems, I have several take-aways I want to share.

1. If I were starting the CIS to ITB EFI conversion project today, I would have set up my MegaSquirt2 tune file using Alpha-N (TPS) load sensing instead of Speed Density (MAP sensor) load sensing. Even with the relatively benign camshaft in my stock 2.7L CIS motor, I could not get as smooth a tip-in, or throttle transition response, using Speed Density load sensing as I have now with Alpha-N load sensing.

2. I have ordered another BMW TPS (13-63-1-721-456-BOE on Pelican) to keep in stock as a spare (I choose to pay the extra $$ for the BMW branded part instead of the less expense alternatives). I decided it would be a good idea to have a collection of critical spare parts on hand for my now rather bespoke 2.8L hot rod engine. Along with a spare TPS, I have spares for the Pertronix ignitor, the 14Point7 O2 sensor interface, and the wide band O2 sensor.