Hey guys I have a 05 with a 140xxx on it. Tonight when I was driving down the interstate I noticed my boost on my scangauge was .2 while going 65mph. I romped on it and it took a sec then boost jumped to 28. Let off boost went down to 8.7 and was fine. A minute later it dropped back out but came back on then dropped out again. I checked my boots and the cold side plastic pipe. The turbo was taken off and cleaned 6000 miles ago, got new cac boots at the same time. I also unplugged the turbo and plugged it back in. Still nothing. After I got back on the road my speedometer was reading 20 mph hire than I was actually goin. The speed sensor in the rear is new. My scangauge isn't throwing any codes. Any help would be greatly appreciated.

 

When you were driving it and noticed the boost gauge low was it driving fine? As in did you have power like it was supposed to have?

 

No the power wasn't there like normal.

 

Check BARO, MAP, EBP

 

Koeo baro 12.3 map 12.3 ebp 11.7. Idle baro 12.5 map 12.3 ebp 24.7. High idle bar 12.5 map 14.3 ebp 16.

 

Well there's your Culprit EBP

You can try to clean it and the Metal tube

But odds are High it needs replaced Since it reads Low then high then low its ALL Over

Unplug it and drive see if it goes better

 

I unplugged the ebp. Turbo turned off.

 

Took the ebp sensor and pipe off cleaned. The ebp is still 5 higher than the other two idle.

 

2.5 higher*

 

SO unplug EBP and Turbo was worse???

normally it will default

2.5?????

 

The ebp numbers were still higher after I took it off and cleaned by 2.5 or more.

 

Is this at KOEO???

What about unplugged EBP did it run any better???

 

No that was at idle after I cleaned it. And with it unplugged the turbo whistle goes away and sounds deeper. I called the dealership they had one in stock. So im gunna go get it 40 miles away haha. But ill let u know what it does when I put it on.

 

That reading isn't to bad for Idle

KOEO was more what I was interested in

All 3 readings would be Ideal

I ou cleaned it andits close we should look at EGR Valve

 

Egr is deleted. Forgot to mention that in my first post.