AKG Subframe bushings/DEFIV Warning

[roastbeef]

very nice, thanks for sharing.

[whats77inaname]

Originally Posted by Bx Tpr

Catless oem headers vs catless bimmerworld headers with the same canned ESS tune. Same dyno and operator. Gained a peak of 8hp and 5tq.

Thanks for this. *DEFINITELY* makes you wonder about different header systems and gains claimed.....

[pbonsalb]

I think the counter argument would be that with a header specific tune, the gains would be greater. Maybe not several times as great, but perhaps 50% to 100% better, if you want to bother spending $1000 to have a tuner play around on a dyno for a few more rwhp and lbs tq. If you spent $2000 for headers that add 8 rwhp and 5 lbs rwtq, then a $1000 tune that adds another 4 rwhp and 2.5 lbs tq would be the same power per dollar value. These mods are beyond my budget, but I like reading about them and the forum is learning. I am more curious about Schrick cams.

[Bx Tpr]

BMW didn't leave much on the table when it came to header design. They really are some of the best headers I've ever seen on any production car.

Next is a header specific tune then save up for cams.