I rescaled the MAP to reflect the 2.5bar TMAP the LSJ uses, and the car starts in reduced power mode, or it stalls. Any idea what else needs to be adjusted to reflect the larger MAP range so that it doesn't do this crazy startup idle? After it warms up, it runs fine.

http://www.hptuners.com/forum/attach...5&d=1232308310

 

http://www.hptuners.com/forum/showthread.php?t=21658

link there too--attached the tune

throw me a bone here

 

Did you disable p0068 from running?

Really, anything other than the stock map is useless. HPTuners isnt capable of logging and properly adjusting the VE. Only EFILive can do that.

Last time I tuned a boosted LE5, you have to force it to run MAF only. I dont think anything has changed since.

 

Yeah I set the p0068 Enable RPM to 7500, so the parameter will never be hit. Same with the p0101,121 and 106 codes...unreachable numbers. Is that part of the problem?

I also disable the VE.

 

I never had to disable p0101, 0121 and 0106 as long as dynamic airflow enable was set higher than redline honestly.

What DTC sets when you hit engine power reduced and what DTCs are pending any other time?

 

OK. I'll put those codes back to their OEM levels, and put the VE enable higher than redline, flash it...and respond here with results. Gimme 5 min. The car is cold right now, so it should be an interesting startup.

I put the High RPM disable at 100rpm, Re-enable at 0 (dyn Airflow) and left the codes as is at unreachable levels.

Car started easier, hung at 400rpm for half a second climbed to 2k, and settled at 1100. All in closed loop.

 

I posted in your other thread. I think you have a hardware installation issue. On your logs posted on the other forum your MAP is showing either way too high of a value causing your stalling issue (255kpa and dynamic fueling is enabled) or when it is in closed loop and holding a semi-good value its still showing 70-80kpa when it should be near 30-40.

 

i'm not looking forward to learning to tune :-(

 

You know what, I think you're right. My map is wired incorrectly.

If you look at Beck's install, and assuming his is correct...:



He has the map sensor that is plugged into the top left of the IM wired up. Mine is not, it's there to plug the hole. My map sensor ontop of the s/c is wired up though, to what...I don't know. I didn't wire it. So I'm referencing the wrong map sensor.

 

Ah, ok. Are you using that three wire sensor as well?

This is definetly the cause. The sensor on top is actually a 2 bar sensor, calibrated in an LSJ tune for 1 bar and only sees vacuum as its located after the throttle body but before the rotors. This is the SCIP sensor. The 2.4L PCM isnt wired to run one of these (although the OS in it is).

You want to run an actual 4 wire LSJ TMAP in the location at the top of the intake manifold.

 

well there ya go.

 

The SCIAP sensor has the MAP sensor's wires plugged into it. The TMAP is plugged into the IM but no wires. I'll have to go to the dealer and pick up a pigtail...

So for 1.5yrs, I've been running this car...without a map sensor. No knock, no lean (rich actually) and trying to figure out why the MAP sensor was so whack. Now I know. Thanks man.

 

No problem.

The 4th wire in the LSJ TMAP is the (T) or temperature part. If you are feeling ambitious you can break out the IAT sensor from the MAF and wire it to the TMAP instead. This provides you with a reduction in timing when necessary if the post blower temps become too hot. Its pretty much the only thing the LSJ TMAP sensor is good for on a boosted LE5 unless you use EFILive.