[Blackwheel]

Originally Posted by T-Dubbs

there is no stage 3.5 with Tunezilla..

https://tunezilla.com/catalog/BMW/20...el?ecu=Stage-1

are you referring to 2.5?

2.5 doesn't require the upgraded R90 fuel pump as I originally was asking about.

They don't post the 3.5 on their webside, as it usually requires a bunch of revisions and therefore will be different for every car.

Performance wise I can say It defenetly feels more powerful at higher rpm's anything over 2500. Under that its pretty similar. I did a couple of 0-60 runs in rwd and went from from 5.3s to 5.1, but with the 3.5 the tires tend to break loose, so I will have to change back to awd and do some more testing.