Unusual T/A

Hey guys got the qmp kit installed and what not. When the car sees around 3500rpms the car immediatly sees over 20lbs of boost, the gauge I have maxes out. It does not drop either. We checked the wastegate and found that the valve was stuck. We used a hammer and fixed that to where it was fluidly moving. I have the 10lb spring in there also. Took the car out again and the same thing. I have an hKS EVC5, no matter which setting as far as lbs go its on the car still sees 20lbs. The evc5 was installed exactly the way the instructions said. Could it be that the wastegate is bad or could it be that the Evc is wired up incorrectly? Any help is appreciated!

MEAN LT1

iTrader: (2)

Whoa!....20psi on the stock bottom end ehh. it must pull like a *****, Good luck on the solution, I know these guys will help you. have you called qmp and talked with Rob about it.

Unusual T/A

No its on a forged 347 with 9:1 compression. We got ahold of someone at QMP he stated that the wastegate needed to be hit with a hammer. WE tried that and it didn't work.

Tiago

iTrader: (27)

what a great wg, needs to be hit with a hammer :rofl:

make sure the WG is hooked up correctly to the vaccum source and the vaccum source is correct.

Unusual T/A

It was hooked up per the directions. If the directions are wrong then I have no idea how it should be wired.He told to use the hammer because the valve inside for some reason gets stuck if its not used over a period of time.

69firebird

iTrader: (14)

where is your vacuum source comming from? turbo or manifold?

MYTURBOT/A

Unhook the controler and hook a boost line up to the WG and just run off the gate if it works the controler ain't hooked up right.

Unusual T/A

I hooked it up exactly like the diagram for the external wastegate in this document.
http://www.socalevo.net/docs/manuals...up%20Guide.pdf

As in one line runs to the wastegate splits and goes to the bottom of the wastegate, and the other part goest to the turbo. Another line goes to the side of the wastegate. Then we have another split line going to right behind the tb and to the bov. IS this all FUBARD?

KHShapiro

iTrader: (10)

if you are truly seeing 20psi you have more probmlems now other than it over boosting.

Unusual T/A

Wow that was insightful. Care to elaborate a little bit?

Unusual T/A

So totally disconnect the boost controller. Run a vaccuum line from the side port of the wastegate to the turbo? What do i need to do about the bov?

KHShapiro

iTrader: (10)

do a search on Mightymouse on this and ls1.com site . he had a similar issue with over boost. if my memory serves me correctly the extreem over boosts caused massive back pressue problems and i "think" he either cracked the welds on the log or he ended up with some valve train problems.... dont hold me to that but do a search on him or pm/email him ,Dave is a very helpful and nice guy.

KAOS

iTrader: (5)

something isnt right if you see 20psi at 3500rpm. is it an electric gauge or uses a vac source?

69firebird

iTrader: (14)

run a vacuum line from the manifold or turbo (i prefer manifold as that is engine boost) directly to the wastegate. take the boost controller totally out of the equation for right now.

and yes, is it a manual or electric boost guage??
you got my # call if you need help or anything
ed
firebird455@onebox.com

SS00Blue

The wastegate is upside down on the QMP kit. There should be NO connection to the watsegate port closest to the ground (bottom). It's the vent. The wastegate should have a hose between the side port and the Boost Controller. Then a hose between the other side of the boost controller and the intake manifold. Don't run it from the turbo. You need to control the boost at the intake. It's not important what the boost is at the turbo because that doesn't take into account the losses from the pipes and I/C.

If you connect it this way and still see 20 pounds, then it's a controller problem.

Hope that helps.

SC-

MIGHTYMOUSE

iTrader: (59)

if it goes to (and holds) 20psi... and motor still runs.. LEAVE IT! and get to a dyno/track

also make sure your p.e. table is like 2:1 lol

i told you to skip the controller last night leave the bov alone

Unusual T/A

yes the top whole on the wastegate is suppossed to vent to atmosphere right? I installed one of the vaccuum lines to that because the HKS EVC5 instructions showed thats what should be done.

Unusual T/A

We're going to skip it today.

Unusual T/A

It uses a vaccuum sorce, its a mechanical boost guage.

MIGHTYMOUSE

iTrader: (59)

is it fast?