Am I Closed to Pegging my MAF?
Am I Close to Pegging my MAF?
I just got back from doing some data logging with truck after a home port job of the plenum and going from an 8.5" to an 8.75" lower pulley and now it seems that I am getting close to a pegged MAF and its only 81* outside right now. I am running a canned predator tune until I can save up for a dyno tune, but in the mean time I added in 10% fuel on WOT to be safe(r). Below are the results or figures from two different 2nd gear pulls.
RUN #1 right before the shift to 3rd gear...
5165 RPM
432.55 Gm/S MAF
4.75 V MAF v
RUN #2 right before the shift to 3rd gear...
5180 RPM
437.92 Gm/S MAF
4.76 V MAF v
What I am concerned with is the increase in MAF voltage when the weather reached 50-60*s. Do I have enough margin or am I looking at the MAFia and dyno tune sooner than I thought? Or do I just go back to the 8.5" lower? Thank you all in advance!
RUN #1 right before the shift to 3rd gear...
5165 RPM
432.55 Gm/S MAF
4.75 V MAF v
RUN #2 right before the shift to 3rd gear...
5180 RPM
437.92 Gm/S MAF
4.76 V MAF v
What I am concerned with is the increase in MAF voltage when the weather reached 50-60*s. Do I have enough margin or am I looking at the MAFia and dyno tune sooner than I thought? Or do I just go back to the 8.5" lower? Thank you all in advance!
Last edited by Lightning8U; Sep 28, 2011 at 11:55 PM.






