Hmm very interesting - sounds like I might need to get one of those red tipped pipes as well. I'm only seeing 5 psi boost after removing the MBC.
Does anyone have a picture of the restrictor?
Hmm very interesting - sounds like I might need to get one of those red tipped pipes as well. I'm only seeing 5 psi boost after removing the MBC.
Does anyone have a picture of the restrictor?
i seem to be having the same problem, ever since my std pipes were replaced with silicone hoses i am only seeing a max of 0.5 bar, have checked bout 10 times now and i dont have any leaks
1998 Legnum VR4 Twin Turbo
17" Evo VII alloys in black
Comma 5.1 brake fluid
Full exhaust system with decat
Magnecor performance ignition leads
NGK BKR7EIX plugs
Blitz Boost controller Low: 0.5 bar High: 0.9 bar
Turbo timer
3 pillar pod with Boost, Oil temp & Psi gauges
jjayokocha: Do you have both vacuum lines running correctly off the throttle body elbow? There's one for the fuel pressure regulator and one for the wastegates.
wintertidenz: you likely didn't plumb the electronic boost solenoid back in.. it hides underneath a pile of wires in the area .. if you just bypassed it, 5psi is expected.
i was getting 0.8 when i got the car but the front turbo needed replaced. The used 1 i got looked in good cond and no smoke. I thought maybe something isnt sealed so i have a leak. When i hit 0.5 i get a rattle then car changes gear
The car was actually missing the solenoid and red tipped pipe when I got it - it's all plumbed back in correctly and the pipes have no holes in them.
I tracked this down recently, thought I would share the solution just in case it helps anyone.....
The boost solenoid didn't seem to be working (although I wasn't certain of a test to do to prove if it was or not) and I didn't have a good solenoid in my parts bin. What I did have were two solenoids with broken pipe nipples. I took one of those apart ans as it seemed to be a simple mechanism, so I then took apart the solenoid from my car and swapped the black plastic section with the pipe nipples to the other solenoid. I was running out of time to try testing the newly-built-from-2 solenoid as I had to collect the kids, so I just reassembled the engine bay and drove off to get them. I can now get over 1.0bar of boost, so I am pretty sure the solenoid was at fault. I don't know how much I can get yet, as the AFR's go well up into the 12's as I get over 1.0 bar. Fuel pump and FPR are next on my to do list!
Glad you got this sorted.
Do you want my help in tuning it again or are you gonna do it yourself?
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I'm not going to tune it again until I have installed the pump and fpr. Then I'll have a go and see if I can get ecuflash working. Maybe if you want to try the gearbox thing at some point I'll get you to show me the ropes.