Problem Fixed! Big Thanks to Game for the tip....make sure you put your clips in your snorkle! I left my snorkle lose and I guess it was getting sucked to the hood or somthing. Jesus I fell better!


UPDATE: Cleaned the MBC and pressure checked the gate. I hooked up my mighty vac pump and pressured up the gate. It goes up and down, so no leaks there. I still have the problem, Im going to install the spark plugs shortly. I also have the Tehpra patch so I know when my car is knocking. I noticed that when the boost trops fast the car starts to knock.


So I have been running into problems after my new mods. AMS LICP and O2 dump. Im not sure whats going on. I did a boost leak test....found my TB seals were leaking. Fixed them, did another boost leak test to 29 psi ( I pressure up the whole system intake manifold and all), I didnt find any leaks. My boost is dropping of at high rpms. I spike at 24-25 psi and it drops to 15 psi at 7000. I thought the Waste gate might have been getting blown open. So I did the WG spring mod seen here.

https://www.evolutionm.net/forums/sh...d.php?t=305565

Im still having problems....any Ideas? Is there any way this could be the tune? I was thinking of reflashing to stock just to see if it will hold boost. All of my mods are in my sig.

Here is a Vid of my boost guage ( I do 2 pulls) >

http://www.youtube.com/watch?v=IEBSNRo_xHA

Im running on the stock plugs 35K...I guess this may be a problem. The last time the car was running good was at the track. 28 Psi on race gas. I toased the clutch then ran gated boost till I got my new clutch. When I installed the clutch I also in stalled the LICP and the O2 dump. I guess I could of maybe melted or fouled a plug and it could be blowing out spark. I do think it may need plugs...the idle could be better. The car also will pretty much shut off when Im at 1/2 throttle and the car is at 2K RPMS and the boost is at 6 psi.

 

hmm...Did u seal the band around the turbo back tight when u did the 02 dump?

 

I never actually took of the band...I took off the O2 without taking the turbo/hot side off. Im kinda lost.

 

Yeah well if u did a leak test yeah man u got me to...Unless u have a real small leak and only leaks out under high psi. u should never do a leak test with more than 7 or 8 psi. Easy way to blow seals out. Idk keep posting maybe someone on here with the same prob. or has had it and got it fixed good luck man.

 

Thanks...what seals are you talking about blowing on a boost leak test?

 

if you're driving the car and hit 29 psi , it would be the same as 29 psi via a leak test.....

 

Bump

 

Bump for Jesus

 

Just for Kicks remove the MBC , I had the same problem b4 the bleeder hole in the MBC was stoped up . So it would spike high and rest at WG psi ...

 

So take it off and see if the boost still falls? Im pretty sure the hole is clean...it was leaking durring the boost leak test....so I cranked it all the way down so it would stop leaking.

 

Ttt

 

Had the turbo outlet pipe off? I recently fixed a leak there that was giving me issues.

 

Nope, never had it off...Im putting new plugs in the car tomorrow. Its got a dead spot at 2000 RPMS at 5-6 6 psi at 1/2 throttle. Im starting to think its not turbo or boost leak related.

 

Are you running the stock DV? Since you did a boost leak test to 29 PSI, I am curious at what boost level the DV opens on your car?

 

Try running a hose directly from the compressor housing discharge nipple to the port on your WGA and see at what boost level the WG is opening thusly connected. Obviously, be sure and temporarily cap off the hose that went from the discharge nipple to the MBC.