Boost issue plot thickens...overboost in 1st, low for the rest

[Ronin]

So I haven't been pushing my car hard lately, on account of it needing a new clutch (taking care of that this weekend). I've been lazily dealing with a boost issue (since my shop is like 30-40 miles away, money troubles, and time to take care of it) where it hits about 4-5 PSI and then creeps (with the pulley that's there, it should be about 8 PSI). Combine that with a hanging idle, it was suggested that there may be a problem with the surge valve. So my intention was to get that checked out.

But the other day I was messing around, and instead of hard launching from a stop (knowing my clutch would burn), I slowly accelerated in 1st to about 2k, then punched it...I let go of the gas and shifted when my boost needle read about 14 PSI. In second, 4-5 and climb...same through the rest of the gears.

Consider me thoroughly confused. :BangHead:

 

[duff daddy]

This is more of a boost FI then a 2v specific question I believe. We will see what we have for answers then if nothing by next week ill move it.

 

[vermilion]

which pulley and kit are you using?

 

[Ronin]

I don't know the pulley number/name, but per Procharger, it's supposed to be good for 8 PSI. It's a P1SC.

 

[97stanger]

intercooled? what bpv/bov?

 

[Ronin]

Yes on the intercooler. BPV is the standard black Procharger (http://www.procharger.com/store/index.php?act=viewProd&productId=20). I've heard the Bosch is a good replacement if that's my problem.

I haven't replied here in a while because I've been spending so much money on more important issues on the car...bald rear tires, coolant leak at the IM, etc.

 

[vermilion]

check which version of that bpv you have. the older ones are none to stick open or close. the newer ones have a hinged actuator plunger vise a swivel actuator plunger.

 

[Ronin]

I will check to see if there is a part number stamped on it someplace I can see without removing it...but it was purchased less than a year ago and looks like the part in the picture from Procharger's website.

 

[vermilion]

i said the samething until my tuner pointed it out. he had one sitting on his shelf. i said hey i have one of these. he said make sure you have the updated one with hinged actuator.