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Discussion Starter · #1 ·
I had a AGP WGA installed on monday and at first kept the boost down just to be safe (10psi). Later on that day i started tweaking the WGA using the two adjustment nuts. I couldnt get it past 13psi spiking to 15 (which is what i pulled on a bad day before intalling the part) with the WGA tightened all the way down. I reset my computer by disconnecting the battery and then unplugging the unit (i'm running stage1). I still notice a decline in the performance, barely pushing 12 psi to redline.

Am i doing something wrong here? Did i not reset the PCM correctly? Thanks in advance for any help.
 

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do u have a boost controller or at least a bleed valve? if not that is all ur gonna get cause that is all the wga is design to handle. get either and tune for 18.
 

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Discussion Starter · #3 ·
2004NeonSRT4 said:
do u have a boost controller or at least a bleed valve? if not that is all ur gonna get cause that is all the wga is design to handle. get either and tune for 18.

I have neither. What BC do you guys recomend?

I was under the impression that i could run 18psi without the BC as long as i had stage 1.
 

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Discussion Starter · #5 ·
Ultimateone said:
Check for leaks............................................................................................
I dont see where there could be one....i'm using the black vaccuum line to the turbo.
 

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Discussion Starter · #7 ·
drewsrt said:
Make a small bleed (around 1/16) inline to the WGA vac line. How do you have it hooked up? Try teeing into the throttle body line if you dont already.

I have it hooked up just the way the directions that came with the part instructed. What do you mean by making a small bleed in the vac line?
 

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A bleed is a small hole meant for "bleeding" off a small amount of air. You can go to napa and pick up some vac line connectors and drill a hole in the center to bleed the air off. Just cut the vac line to the WGA and install the bleed. I wouldnt make the hole larger than about a 16th of an inch though. OR...you could get a boost controller to put inline with the WGA which is what id suggest if you had the money....if not just get the bleed. Also you may wanna buy some tee's at NAPA also and tee into the throttle body line and run the vac line from there. The line is the 90 degree elbow that's comming off of the intake manifold RIGHT at the throttle body. Just tee into that line a few inches past the elbow and there you have it.
 

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Discussion Starter · #10 ·
drewsrt said:
A bleed is a small hole meant for "bleeding" off a small amount of air. You can go to napa and pick up some vac line connectors and drill a hole in the center to bleed the air off. Just cut the vac line to the WGA and install the bleed. I wouldnt make the hole larger than about a 16th of an inch though. OR...you could get a boost controller to put inline with the WGA which is what id suggest if you had the money....if not just get the bleed. Also you may wanna buy some tee's at NAPA also and tee into the throttle body line and run the vac line from there. The line is the 90 degree elbow that's comming off of the intake manifold RIGHT at the throttle body. Just tee into that line a few inches past the elbow and there you have it.
Hey thanks alot man.

I'm off to the parts store.
 

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When you mean you're using the black line to the turbo, do you mean the stock vacuum lines or the Manifold (TB) lines? And yeah, a WGA should be used in conjunction with a MBC/EBC or a bleed. I have an EBC and wished I never messed with an MBC or a bleed. EBC's are just so much better. I'd spend $320 and get the PRofec-B IMO. I run 18 PSI now dropping to 16 by redline. Pulls much harder than stock.

Or, if you want crazy tire-scorching torque, hook the WGA up to the green line coming off the compressor housing. I didn't like all that torque though ..
 

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Discussion Starter · #12 ·
Khryz said:
Or, if you want crazy tire-scorching torque, hook the WGA up to the green line coming off the compressor housing. I didn't like all that torque though ..
And what of the black line if i do this? Just cap it off and forget about it?
 

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Check for leaks, I just installed a new agp the other day and I was able to set boost to 19+ with the boost controller off. I used the manifold setup since I have the mopar bov. I have since backed off on the wga a little and use the boost controller to bring it up to 18.5 psi, seems to be smoother. Is your agp the new one (billet) or old style, the spring may be different, not sure. I am running stage II btw.
 

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If you want to use the turbo compressor vacuum line coming off the turbo compressor (green line), disconnect the green line from the soleniod, and disconnect it from the short green line. Take the green line out. The black line coming off the soleniod going to the stock WGA, take that off, and out of the car. Get some vacuum line, a connector, etc, and connect the short green line to the AGP WGA, with a bleed installed in the middle, or a MBC, etc.

I'm using the Manifold line, btw.
 

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Khryz said:
If you want to use the turbo compressor vacuum line coming off the turbo compressor (green line), disconnect the green line from the soleniod, and disconnect it from the short green line. Take the green line out. The black line coming off the soleniod going to the stock WGA, take that off, and out of the car. Get some vacuum line, a connector, etc, and connect the short green line to the AGP WGA, with a bleed installed in the middle, or a MBC, etc.

I'm using the Manifold line, btw.
I was told with the manifold line you dont get as much part throttle boost?
 

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The green pressure source makes the turbo spool so fast it creates so much torque that there's no chance you'll have traction in 1st or 2nd running around 18 PSI. The Manifold source still spools faster than stock, S1, and S2 put together, but isn't as quick as the green line source, allowing you to get traction in 2nd gear again, even at 18 PSI and it pulls like a raped ape. I haven't tried the Blue line yet simply because I still have the stock surge valve, so I can't comment on that.

I feel the Manifold line shifts the powerband higher in the RPM range, while the green line is good for more mid-range power. If you run at the track with some axles, clutch, and some slicks the green line will yield some impressive launches. But on stock tires, the Manifold fits better, IMO.
 

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Using a bleed or MBC or EBC is a good idea -- but it's probably not "the" problem. You must have a boost leak somewhere. I used to run with the AGP WGA only (to green line), and had no problem getting it to spike to 18 psi or above, without tightening the adjusting nuts all the way down.

I added the bleed, and it keeps boost from spiking as quickly. Still running without a MBC.

Note: You can get a decent launch at the track using the green line setup. See time slip links in my sig.

Note 2: MAKE SURE the WGA is installed correctly, and screws are tight. Make sure the flapper was done exactly per instructions so that it will close completely.
 
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