I get a 2 - 0 - 7.5 boost pattern in 3rd gear, The car
has 54000, stock exhaust runs great and idles well.
I have a M2SS DP and MP and catback on order awaiting the AEM ECU release but I need to get this under control first. I am going to do the silicone lines and wanted to troubleshoot this problem at the same time while its apart. LOTS of TOP END No Bottom
Seems to have lots of power above 4500. I am studying the vac line charts and looking for a way to test the electrical solenoids. Any help to get me started in the obvious steps would be welcomed. Just did 5Th gear syncro and am working my way through the list of things to adjust/fix/replace. Did the search thing and found nothing about low end boost @ 2.

 

I had 2-5 lbs of boost. No secondary...it sucked ***. Come to find out, one of my intercooler couplers had a gapping hole in it. I bought silicone couplings from baker precision, installed them and viola'! I have 10-8-10 and hauling *** again.


If that's not the case check your turbo control actuator and vacuum lines.

Laters,
Jason

 

I started removing things tonight. I am confused by the lack of boost (2) from one turbo and (7) from the other. I am trying to figure out which solenoid controls what in thai mess. I will check the IC piping and connections tomorrow in the daylight. I thought you needed primary boost to create secondary boost or is it just for the changeover? Lookin at my fiche and trying to find the right vacume tubing. Thanks for the reply.

 

I just realized my boost guage is in kg and after doing a conversion I think my upper end is in the 10 range. but I still get only 3 on primary and 0 at tansition. I inspected all the lines I could get to and found nothing, The 10 on the secondary turbo sort of eliminates many of the after turbo leak conditions and leads me to beleve its in the precharge or wastegate control area. Anyone have anything they have seen ( testing process) to help with this troubleshooting.

 

lol im having the same problem. but im getting like 9-5-9
checked my ic pipes and one was loose so i tightened it up but still at 9-5-9. this weekend im gonna take that fuckn rubber coupler and my BOV off to see if they are leaking. i will let u know if i fix my problem of not.