boost ?

[Mchek]

Iv had my truck for a little over a month now and i just picked up an edge evolution (i know that its not the greatest tuner for my truck but the price was right and im just going to use it until i can scrap together the cash for a good chip) its the newer version of the edge that can be used like a set of guages, iv had it on my truck for about a week now and iv noticed that even at WOT the most boost my truck is making is 7psi, is that normal? i thought it would be at least in the teens if not the low 20's. the truck seems to run right and it has lots of power so i was just wondering if this is normal.

[HVAC SuperTech]

You need too check fuel filter and make sure you don't have any boost leaks. Where did you tie the boost line into? Also you really need your truck on a scanner to measure icp and do some testing on it. It sounds like something's not right

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[Mchek]

i just checked the filter two days ago, and its brand new, the dealership changed it when they did the oil before i took it home. and iv looked for leaks and havnt been able to find anything. the edge dosnt use a boost line, it stays plugged in to the obd-2 and displays what the ecm is reading, so that could be the problem. and what exactly is the icp? and what do i need to measure it for? it could be nothing, but i want this truck to last me for a long time so i want to make sure everything is working to its optimal potential.

[Turbostang500]

If you want the truck to last a long time, you probably should just pull the edge back out.

That boost pressure is low but we dont know if it is the actual pressure or not. You need to verify the actual boost pressure with a mechanical gauge. There is a good chance that the map sensor is bad but no one can be sure right now.

[MyTractorsSexy]

i was gonna guess bad map sensor... test is mechanically and then decide if the sensor is bad or the truck has a boost leak

[Mchek]

Ya, i think im going to sell it and get a beans chip, not real happy with the way it the edge made it shift. i hate to sound stupid but how do i go about testing it with a manuel gauge? is the map sensor hard to change, or is it just siting on top?

[Schnot]

It's on the top of the heater box. There's a rubber hose that runs from the intake spider/x-pipe to it. It's east to spot. I dont know how to test it though.


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[Turbostang500]

Pretty simple for both. A mechanical gauge is what most cheaper (less expensive) boost gauges are. They dont use an electric sensor to show boost. The pressure goes right into the gauge. This test will tell you if the sensor is bad or if you are truely low in boost pressure.

I put my boost gauge in the hose running to the map sensor. Just cutand tee'ed it. Some guys dont like that but I haven't had problems.

The map is right on top of the engine.