I don't think I over tightened it though. If I did, wouldn't it break and get stuck immediately and not after 2 months of running it? (not a challenge, I really want to know!) lol.

 

I agree that there is no proof that the WGA is faulty. It should be sent back to FP to be bench tested. If the WGA tests o.k., then the question still remains as to why his boost is spiking. I also doubt however, that the WGA itself is funky.

The problem, as you state, might be an overtightened actuator rod or a misadjusted, improperly connected, or sticky MBC. Additionally, overboosting may be due to innadequate exhaust bypass flow out through the wasgetgate bypass port, which would require porting. Further, there is the possibilty of an improperly pulsing 3-port solenoid.

The FP HD WGA is notorious for exhibiting a peculiar boost spike. Some users who didn't like the spike resolved the issue by going back to the stock IX WGA. My personal example of the FP HD unit has worked flawlessly, exhibiting zero creep or spiking, even with crazy amounts of WG preload, via a shortened actuator rod length.

 

ya i guess that makes sense, but i ran my for a couple months to and all of a sudden it started over boosting i could never really figured out what happened but one suggestion was the diafram(sorry i cant spell) ripped from being tighten to much...but the company was real nice when i called them and i sent them my old one and a couple days later i had another one...and to be honest i run a white rabbit tme turbo,and with stock wga i did not fell that great until i put the force perfomonce wga back in then i felt a pretty good diffrence...

 

just send it in because im sure theyll warranty it, a company like that doesnt want a bad rep.

Cheers!

 

I think it would be safe to say that the overboosting has nothing to do with either the MBC or the 3 port GM Boost solinoid, because when I connected the Pressure source directly to the wastegate, it still wouldn't run wastegate pressure. I simply put the MBC on there just to re-confirm the first test. The reason I have the MBC on my car now, is just so I can run wastegate pressure, until my tuner can retune the GM Boost solinoid for the stock actuator, since it was orgionally setup for the FP WGA.

Also, if the actuator was orgionally misadjusted, wouldn't it boost all crazy right after I ran the car the first time? Or is it possible that if misadjusted, it wouldn't overboost like crazy until well over 2 months later?

Can you please shed more light on the part where you mentioned the "innadequate exhaust bypass flow out thought the wastegate bypass port"? This is the first time someone has mentioned this.


Hmm. Good point. I'm going to pressure test the WGA soon and see how it is. I'll probally give FP a call on Monday and see if they can give me an exchange too.

Thanks for all your input, guys!