Hi all I'm new to the site great site and good to find help/advise frm other bimmer owners,
I'm after some help/advise on my e90 330d 06 it's just had the dpf removed,decatted and egr bypassed with a stainless part, before all the work we put it on the dyno and did 246bhp on the first run as the car is already mapped to 268bhp so we cleaned the maf and map sensors and ran it again it did 269bhp,
So the innards got ripped out dpf/cats and egr bypassed then remapped again with a power map what should take to 295bhp.
We put it on the dyno and it ran -:
246bhp 1st run
279bhp 2nd run
257bhp 3rd run
Seems to be up and down for some reason we swapped the maf sensor with no change just at a loose end now with what the problem is, it still has the dredded swirl flaps in place and the blanking plates are gettin fitted Monday.
So any advise would be fantastic to help me out