Well, I've been told that it is "normal" for the pressure to go down slowly(1 psi every 30 seconds or so)when doing the test from the turbos. If you think about it, it would be normal for some air to get by an open valve and out the exhaust.

 

What about when you get limp mode after driving over a bumpy (rough) road?? Constantly happening on the same road spot. Any though were or what to look for?

 

This sounds like a loose connector - MAF maybe?

 

Any updates on this? Spoke with Sam a few weeks ago, he said you guys were going to try a new base map.

 

All I can suggest is you get an OBD2 code reader/data viewer and observe various engine/DME telemetry in real time while you drive over the rough/bumpy road. Ideally you would want an OBD2 code reader/data viewr that offered the ability to log the telemetry. Durametric I think does this rather well based on logs I've seen posted by those who have used a Durametric.

I know some off the shelf OBD2 tools do this. I have one from way back when that does this but only logs about a minute's worth of data. That is probably not a big enogh window unless can trigger the behavior on a specific spot on the road.

I'm less enthusiastic about trying to wiggle the connections of various sensors. One has to be very near a running engine and there is the risk of injury if one touches something hot, or gets a shock, or gets a piece of clothing or body caught in the accessory drive.

 

I would suggest checking the connections with the engine off to start...

 

Just since you're mafless, and since everyone else has suggested it, it's probably your maf






i kid

 

I find it hard to believe you hit limp mode without a code being thrown. You need a Durametric readout.

 

got a code today!! MAF low input value!!

 

^Good place to start.

 

Yeap!! Maf died today!! No actual reading and got the check engine..