I was reviewing some logs and I have noticed that for some reason I am showing 1.4lbs of boost coming in at 90kpa instead of 100kpa. Ive tried changing various settings and for what ever the reason my boost starts at 90kpa. I am running on tephra SD with a Omni 4 bar sensor and a gm IAT sensor wired into the fuel temp ACD. I have been chasing this around for days and been trying different settings but to no avail it still comes in at 90kpa. Any help or suggestions would be appreciated.

I have attached screen shots of my MapVe settings and RpmVe settings along with my evoscan log. Also what is the formula to log kpa for the Omni 4 bar. Thanks.

 

My car tips into boost right at 70 kpa/load.(96533706 romID in an 03) It is more of an arbitrary number, as opposed to a real KPa value. I wouldn't waste too much time chasing that; just make sure your fuel table is set up correctly.

 

Thanks for the advice. I notice that to get my boost to come in at 100 kpa i have to have my tables set at a 1:1 from 100 load and up or it will not line up. Im still playing with it but I will just change my timing in those areas.

 

I had to play around with my SD tables a bit to get to get 100 load to be approximately 0psi.

From what I understand, the MAP vs. Load table gives you a baseline for load. From there there are additional load values added or subtracted from that number (actually most are scalar multiples).

 

Ive noticed that if I have my 101 value at 101 I will get boost right at 100kpa% in the evoscan maptracer. I may have to just leave it like that and then mess with my RPM Ve tables to get the afrs dialed in