LMM: MAF issue during logs

[Harbin_22]

Since I put the twins on, during my WOT logs the MAF will go up to 76.3#/min and then drop to 0 the rest of the time. When I let off it goes back to normal. With my cheeta it would go to 76.3 and stay there. The truck pulls hard the entire time and it doesn't cut back fuel or anything. Just wondering if anyone else has this. If the MAF was not working while it showed 0 then it shouldn't fuel right should it? I am also getting the "reduced engine power" at about 95 mph everytime. And all the C080... and C090... tables are set correctly.

 

[S Phinney]

Check the grams per sec numbers and see where they fall. You should have at least 40 at idle and 400-500 at wot.

 

[Harbin_22]

Nobody ever see this happen?

 

[Harbin_22]

Nobody?

 

[Harbin_22]

I did some logging today. I logged the MAF frequency. The MAF digital table has the frequency to lbs/min. They stop at 88xxhz. During my logs I am getting above 11,000. When it passes the 88xx area is when it starts reading 0 in the log. But all my fueling tables stay right. Any ideas

 

[Harbin_22]

Any ideas?

 

[Harbin_22]

Well I fixed the "reduced engine power" part. Haven't logged it yet to see what that is doing. The original kit had a 4" intake and I went with a 5" and it is fine now. Guess there was too much velocity with the 4".

 

[FrankenMax]

My truck did this Rob had a hell of time getting it dialed in. I have no clue how he got it. FWIW

 

[Harbin_22]

He rescaled mine a couple times with the 4" and nothing changed. Threw the 5" on and it is completely fine now

 

[FrankenMax]

If I recall that sounds about right to me.