Dinan SC kit running at 8psi safe?

[Mitch P.]

for those of you that have upgraded their SC pulley from 3.12" to 2.7" (i.e approx 6psi to an 8psi system) have you had your A/F ratio checked at redline? I am contemplating adding the H20 kit to my 328is but am worried about possibly running lean at the track (where I usually do my driving)?? Is the Dinan kit capable of adapting to the added air by dumping in more fuel or are the injectors already running at max? The last thing I want to do is to start running lean at sustained high rpms. Any info is greatly appreciated and even better yet, a dyno chart with A/F curve would be nice. Thanks.

[Stylin]

dont u need to have a recalibrated MAF at 8psi?

[Stylin]

Originally posted by m3boost


Nope. Just slap a smaller pulley and water injection and I was done.

I think i need to invest in a water injection kit..

[Mitch P.]

I'm going with the Aquamist 2c system which is a little more sophisticated than the 1s. This one supposedly will vary rate/amount based on fuel injector duty cycle? Sounds good to me

[Mitch P.]

after I have the pulley change plus Aquamist 2c system installed, I will post a dyno plot together with an air/fuel ratio plot to see if I'm running lean. Should be a couple of weeks.