ECMlink Map value doesnt match boost gauge

[bigdnno98]

I'm trying to setup my SD tune. I'm having a hard time and I think it's because the MAP value dsm link is logging isn't near what the mechanical boost gauge is reading. I have an ecmtuning sd cable. I cut the gm map connector off and wired it into my AEM 3.5 bar. I started the car with my new v3 ecu and set my map input to baro. It's logging -2.5 in/hg and the boost gauge is reading -15psi. Airflow per rev is .70 mad when I press the gas the car wants to die. Any help would be greatly appreciated.

 

[snowborder714]

Post a log.

Where/how is your AEM MAP plumbed in?

 

[bigdnno98]

AEM MAP is in a bung in the TB elbow. I'll post logs now.

 

[snowborder714]

You don't need to post logs right now.

Did you happen to read where to mount the MAP? Please take a look at these two links and correct your MAP mounting.
sd101 [ECMTuning - wiki]
sdhose [ECMTuning - wiki]

 

[bigdnno98]

You're saying TB elbow to IM is gonna make that much difference? I have a bung welded in the TB elbow for it. No extra vacuum lines or anything.

 

[snowborder714]

Do you think it's on the correct side of the throttle body plate to see vacuum?

 

[bigdnno98]

Hahaha. That's why you're the moderator!!!! Awesome man. Thanks.

 

[snowborder714]

Has nothing to do with being a mod - just knowledge around SD.

Make sure you take a look at the following link to get the car ready to tune.
http://www.dsmtuners.com/forums/ecm...efore-you-ask-ecmlink-dsmlink-log-advice.html

 

[bigdnno98]

Thanks. Appreciate it. I've moved the MAP sensor. Car started up much easier. Sounds more healthy too. It still dies after a few seconds of idling but it seems different now. On startup vacuum goes to -10psi but then starts to creep back toward 0. As it does that idle gets worse and the car dies. I'm not sure which one is causing the other but I'll BLT the car again tomorrow. Weather sucks.

 

[snowborder714]

How do you have the MAP connected now?

 

[bigdnno98]

Using a prt off the IM for now until I order an RRE MDP adapter. I have about 4" of 1/4" tubing directly off the IM port to the sensor.

 

[snowborder714]

Sounds like a good setup.

FYI, you can also get an adapter from ECMTuning.
ECMTuning, Inc.

 

[bigdnno98]

Thanks!