this ever happen to anyone before? normally ive been boosting around 25 psi. now i get about 23 and the boost needle gets very shaky when i get on it real hard which isnt normal. this happened after i took my manifold off to fix my endplate. i even took it all back off and put it back on again to see if i did anything wrong but its still doing the same thing

 

what do you have done to be boosting so much
and what kind of boost gauge do you have the ss/sc gauge only goes to 20

 

tvs with a 2.8, and its a mechanical boost gauge that goes to 30psi

 

uh belt slip

 

i think its normal for mechainical gauges to do this. my buddys srt4 did this also.

 

no it isent normal

 

gauge has gone out most likely. my friends stock gauge in his SRT-4 would do this... it also read that he was spiking high enough to WRAP the guage... put in a good aftermarket autometer gauge and it was fine after that..

 

It's not a electrical gauge it's mechanical so that means it works directly off the manifold. Bet that sounds stupid. You might have a boost leak now since you removed the manifold and put it back on. Do you have stock exhaust system on that car?

 

my bad on the misinformation. i have been in two srt4s that had a similar problem so i figured it was normal.

 

When I first put in my mechanical gauge it did the same thing, make sure everything is tight, seems like its caused from the higher pressure, so its not a heavy leak, probably a clamp that can't hold that much and needs to be tightened. After fixing a vacuum line clamp, my problem was fixed.

 

now that u mention it. i dont remember clamping the boost line that goes onto the manifold lol