I read somewhere that the Lucas disc type injectors I installed on my M5 flow more at maximum than the pintle style injectors (Bosch) that were on originally.

I get a bit of brown smoke during full throttle runs but have yet to run it on a dyno/AF probe since the change from the OE injectors and chip. I'm running a Dinan Gen4 now (pondering EAT...) Do you think that would explain the smoke?

Here's the run with the OE parts from 2001. IIRC, the dyno guy said it was running a tad lean then.



I still have the OE injectors but swapping back for experimentation is a bridge too far.

Thanks in advance for your comments.