I give up. For the past week my car won't boost over 2psi. I'll get out of vacume and into boost at 2300, but nothing much after that. We've checked and changed nearly everything. We swaped turbos, wastegates, and even blow off valves and nothing changed. We even unhooked the boost controller just incase that was the problem. It's so odd, because everything was working fine a week ago. I leave it up to you guys now. I'm all out of ideas. I'll try almost anything now. My setup is listed below if that will help any.

2001 Honda Accord I4 Automatic.
Garrett T3/TO4E 57 trim .48 turbing housing
AFC Hack with RC 440s
Tial 38mm wastegate with .3bar spring
Closed loop Greddy Type S blow off valve
Closed loop wastegate
Log style manifold
All custom pipes
2.5" downpipe no cat into a greddy evo
26X6X3 FMIC

 

Did you check all of your IC piping connections? Sounds like you have a HUGE leak somewhere.

-Ryan

 

This happened to a guy a few weeks back, turns out that the filter he was using for the turbo was to restrictive, it was a shop rag......

imed you


Rob

 

pressure test the intercooler?

-PHiZ

 

I've checked the pipes visually but today I will try and pressure test it. We are also using a 3" cold air intake with a rather large K&N style filter.

 

What about the manifold? Is it warped? Maybe you're getting an exaust leak before the turbo.

 

We took the turbo and wastegate off, and we found a very small exhaust leak. We fixed that and nothing changed.

 

I assume the AFC Hack allows the map sensor to not see boost?

I'm not fimilar with AFC hack, but I'm guessing that is the problem.

 

I don't think it's a hack problem. I'm still getting to 6500RPM so the exhaust gas should still spool the turbo and build boost. Even if the fuel won't support the boost it should still be there. Of course it would be very lean, but I don't think that's the problem.

 

have you checked the turbo out to see if possible bushings out or wheels fucked up for some reason. Comp housing loosend up from backplate. Just a few more Ideas for ya.

 

I checked to see if there was any play or resistance in the shaft, but one again nothing.

 

did you check the gauge?what does 2 psi feel like?your gauge might be malfunctioning,blow in the other end of the hose,see how high it goes up,you should be able to blow with your mouth and see a good 20 psi or so.

 

what about a leak in the IM? are the valves in the brake MC line and evap line holding boost?

 

there is also a gasket on the turbo between the compressor housing and the backplate.. perhaps is leaking there?

 

20psi??? I don't think we can even do 3psi with our lugns. I have the SAFC, Greddy electric, and the Profect B all telling me the same boost and they are all on seperate lines. I gave everything their own manifold tap trying to figure this out. I guess I'll take apart the compressor side tomorrow and check for leaks there.

 

Ohhh, and no it doesn't feel like more than 2psi. But i deffinetly can tell I'm no longer in vacume.

 

yes,if you blow in it,it will read 20 psi in just that little tube,ive done it before,its not hard to push 20 psi through a tiny tube.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictypenos &raquo;</TD></TR><TR><TD CLASS="quote">yes,if you blow in it,it will read 20 psi in just that little tube,ive done it before,its not hard to push 20 psi through a tiny tube.</TD></TR></TABLE>

No way in hell you can blow 20psi with your lungs. I think I blew my guage to like 4psi with my lungs before I tossed it on the car.

 

k,then i guess im superman,lol.i did it on mine.

 

I blew in my Profect B and it showed 2.5 psi. That's with trying not to spit.......so I guess I can blow 4 if I tried........LOL, back to the subject still have no idea what's up.

 

Yeah the most I could get on my gauge was about 4psi.
Something musta been fucked up if you could push 20psi!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictypenos &raquo;</TD></TR><TR><TD CLASS="quote">k,then i guess im superman,lol.i did it on mine.</TD></TR></TABLE>


your gauge must be fucked up then.

 

maybe

 

20 psi? no way you can blow that much?

 

Okay, I figured it out. If I can't find the problem I'll just have you be my passenger and blow in the intake for me. But you'll need a wastegate.