Measure boost in SCT data log?

[2SSCAMARO]

I connected my device to the OBDII this morning and made a new configuration file. I did a manual select of pids that were shown as being "validated as found on my ECM" There were 189 pids displayed. Of the ones I selected, several were off in magnitude i.e. the fuel pressure pid logged at 133Kpa which is off by a factor of 3 as it should be 400 kpa. I believe the MAP pid you are using is off by a factor of 2.8 That should shake out like this. 61Kpa X 2.8=170.8 X .145=24.76 minus 14.7=10.06psi. If you cannot find a map pid that will analyze the data correctly, you will need to get with a SCT tech and they can massage the pids with a "strategy" that will enable the pids to calculate correctly. I'll try to be potlitcally correct and just say the SCT software functionality leaves a lot to be desired.

[ss/rs-matt]

Originally Posted by 2SSCAMARO

I connected my device to the OBDII this morning and made a new configuration file. I did a manual select of pids that were shown as being "validated as found on my ECM" There were 189 pids displayed. Of the ones I selected, several were off in magnitude i.e. the fuel pressure pid logged at 133Kpa which is off by a factor of 3 as it should be 400 kpa. I believe the MAP pid you are using is off by a factor of 2.8 That should shake out like this. 61Kpa X 2.8=170.8 X .145=24.76 minus 14.7=10.06psi. If you cannot find a map pid that will analyze the data correctly, you will need to get with a SCT tech and they can massage the pids with a "strategy" that will enable the pids to calculate correctly. I'll try to be potlitcally correct and just say the SCT software functionality leaves a lot to be desired.

Ok, I spoke with Ted this morning. He said that the SCT pid already factors in atmospheric pressure and subtracts it, which is 100kpa or 14.5psi So that equates to simply [(61).145] which comes out to about 8.845psi. That sounds right.

[2SSCAMARO]

Originally Posted by ss/rs-matt

Ok, I spoke with Ted this morning. He said that the SCT pid already factors in atmospheric pressure and subtracts it, which is 100kpa or 14.5psi So that equates to simply [(61).145] which comes out to about 8.845psi. That sounds right.

Mine must be a stick of dynomite with the fuse burning. I log 151Kpa at WOT. If my SCT pid factored atmospheric pressure and subtracted it then I'm boosting 151Kpa X .145 = 21.9 psi. That ain't shabby on a 3.6 pulley.

[ss/rs-matt]

Originally Posted by 2SSCAMARO

Mine must be a stick of dynomite with the fuse burning. I log 151Kpa at WOT. If my SCT pid factored atmospheric pressure and subtracted it then I'm boosting 151Kpa X .145 = 21.9 psi. That ain't shabby on a 3.6 pulley.

lol! I'm calling SCT. Which version of LiveLink are you using Gen2?

[2SSCAMARO]

GenII version 1.0

[ss/rs-matt]

Well I called SCT and they were clueless. lol. The only thing I can think is its the way Ted inputs the equation when he builds the tune file. If your running a 3.6 pulley and making 151kpa and I'm running a 3.4 pulley and making 161 kpa then I'd say that's right.

[JANNETTYRACING]

Originally Posted by ss/rs-matt

Well I called SCT and they were clueless. lol. The only thing I can think is its the way Ted inputs the equation when he builds the tune file. If your running a 3.6 pulley and making 151kpa and I'm running a 3.4 pulley and making 161 kpa then I'd say that's right.

Yep.

[2SSCAMARO]

Originally Posted by ss/rs-matt

Well I called SCT and they were clueless. lol. The only thing I can think is its the way Ted inputs the equation when he builds the tune file. If your running a 3.6 pulley and making 151kpa and I'm running a 3.4 pulley and making 161 kpa then I'd say that's right.

The big difference is that during WOT my logs show 151 Kpa and yours at WOT shows 61 Kpa. It appears that your MAP pid subtracts 100 Kpa and mine subtracts 0 Kpa.