what could be throwing off airflow rate lb/min to make it read only 3 to 4 lb/min when WOT at 29psi and 36 load?
tephra v7 SD
2.2L 10.5:1 4g69 destroker
e85
omni 4bar
gm iat
pte 6466
2150cc injectors

 

A lot of stuff, First there could be a leak after the MAF sensor. Or your MAF scaling could be off. Or the MAF could be bad. Or your Logger could just be wrong. You say your Speed Density. So in Tephra V7 theres a table where you put MAF Signal in. That could be mis calibrated

If you could post up your rom and Datalog. It may not be safe to pull to redline so don't if your car is giving you and issue. Just log the areas up to the issue area.

 

thanks for the reply, it just started doing this, i havent messed with maf scaling only IAT/mat.

https://www.dropbox.com/s/6c9i3fygo2...7_22.55.55.csv

https://dl.dropboxusercontent.com/u/...S6466w2150.bin

 

Which XML are you using
When I drop your rom in ECUflash it cant define it.

 

88591517

 

dont you mean 88591715

 

https://www.evolutionm.net/forums/ec...bles-baro.html


Thats the Speed Density i was using. Its the Tephra V7 with 3d Ve

 

Yeah i don't really want to put the 3d ve tables on since 2d was working fine. Since SD gets airflow from map and iat and both are working, I'm not sure what else it could be

 

You are logging a ton of useless data, including the airflow lb/min. The only necessary stuff to log is TPS, RPM, Wideband, Timing, KnockSum, Knock Voltage, Load1B, and Boost.

 

I'm pretty sure virtual dyno needs airflow to work properly. That's why it's telling me i only make 80hp sometimes lol. Usually 1lb/min is near 10hp depending on VE and other variables. A few days ago it was logging over 60lb/min now it only says like 3lb/min

 

Virtual Dyno uses TPS, RPM, and time to calculate power.

 

Alright, i didn't know but i figured it would make sense. I'm just applying my Ecmlink tuning experience to the evo. I appreciate it though.

 

Vd is math equation based on mass vs accelleration over time