Bad idle during warmup

[deadlois]

Hey guys, just put together my GN last weekend and it runs, but it doesnt like idling until it warms up. It will stall out unless I feather the gas. I doublechecked everything and couldnt seem to find any connections I may have missed. The other problems are my manual boost guage reads below zero and seems to be about 5 PSI behind the one in the dash. When the key is turned on (just in the on position without the engine running) I get a few lbs of boost and about 2-300 rpm reading on the dash. This happened after I bent an intake valve BTW. Any ideas?

 

[quicker6]

Does your service engine soon light come on?? Sounds like your TPS sensor may need adjustment and maybe your MAF sensor is going. Not sure about the dash lights.....If I'm not mistaken, your cars boost gauge also reads vacuum right?? When the engine idles it will read below zero.
gl,

 

[deadlois]

No, I do not get any error codes, I also have a scanmaster 2 and the TPS is within the normal values. I was pretty sure about the boost guage reading,just never noticed it before. Thanks.

 

[Hawaiian Turbo]

How's the IAC on the SM ?
I wouldn't trust the stock boost gauge, and your manual one should be just like D said.