I put my turbo on Sunday, and opened it up a little today and yesterday. Anyway I noticed right around 4400-4500rpms and when the MAF readings go a little over 40 they instantly go negative....anybody experience this problem?

-Sly

 

anyone

 

Your MAF has gone into what is called Clippings. You are over the 511 G/ps of what the MAF can effectively read.

 

On the HPTuners board this was a known problem from what I was told and it would be updated in v1.5 But then it boggled me because when I had the stock shortblock minus turbo it never did that. My MAF tables haven't been adjusted up that high yet. Would I reach over 511 G/ps on 7lbs of boost by 4400rpms (actually seeing about 5 right now) lol sorry kinda tired right now...anyway, thanks for your help!

-Sly