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not making boost?

Started by chalky123 · 17 July 2011 · 17 replies

Preserved from CalaisTurbo. Original authors and dates are shown; archived members are not current Holdcom accounts. View original archive ↗

chalky123Archived member
just installed a cooler and a boost gauge. both have been hooked up properly and there is no leaks or whatever that i can notice, iv throughly checked it out, but when revving in the drive way today i noticed that the boost gauge moves up to about 1-2psi, although the turbo is stock, everything is stock bar the intercooler, should there be a bit more psi?? and also when roughly does a standard vl come onto boost?? because by the time this reaches 1-2psi its red linning???
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Duke57TTArchived member
Take it for a drive and tell me how much boost it makes :-)
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chalky123Archived member
what difference would it make driving??
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Duke57TTArchived member
The engine will be on load and it will make boost.
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chalky123Archived member
okay no worries, il give it a shot tomoz and see what happens
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madrexArchived member
You wont get boost reving it in the driveway it needs to be under load to make boost take it for a drive and it will work
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chalky123Archived member
took it for a drive, roughly makes about 4-6 psi, its raining where i am at the moment so it was a tad hard to get it correct :P
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Duke57TTArchived member
lol.. nice
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chalky123Archived member
is that roughly normal for standard? and whats the most i could turn it up to with just a cooler?? 10 psi?
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aus880Archived member
Quote: Originally Posted by chalky123 [View Post] is that roughly normal for standard? and whats the most i could turn it up to with just a cooler?? 10 psi? you're obv just starting out so keep it low until you get the hang of things a bit more
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Duke57TTArchived member
Need to know more about the setup to comment.. also there is a lot of threads with info on these basic mods. I believe there is even a sticky, but 10-12psi for a real turbo car on factory ECU, injectors etc is pretty normal. For anything else its a bit suck it and see.
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chalky123Archived member
yeh im new to vl's, had a few skylines, just wondered what the ecu can handle
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madrexArchived member
mate if its a turbo motor about 12psi if its a na motor with turbo computer and fuel system about 10psi
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chalky123Archived member
alright sweet thanks
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chalky123Archived member
i previously asked why it wasnt making boost in neutral and you said drive which worked well got 4-6psi, now that ive moved my AFM into the cooler piping i can make boost just parked there and it seems to be going to about 7-8 now?? I have a 2800 stall, would this make any difference?
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HTURBOArchived member
Do you just have a stallie or do you have a B&M shift kit aswell. With my manual I could be in 2nd reving the guts out of it(full throttle) doing 80km/hr & she'll only make 18psi. But If I chuck it into 4th doing 80km/hr(full throttle) it will make 21psi. The more load the more boost you can run. When I have a car full of fat chicks she'll pump 28psi Some original photos have not been recovered yet.
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bachig24uArchived member
Quote: Originally Posted by chalky123 [View Post] just installed a cooler and a boost gauge. both have been hooked up properly and there is no leaks or whatever that i can notice, iv throughly checked it out, but when revving in the drive way today i noticed that the boost gauge moves up to about 1-2psi, although the turbo is stock, everything is stock bar the intercooler, should there be a bit more psi?? and also when roughly does a standard vl come onto boost?? because by the time this reaches 1-2psi its red linning??? most stockers need a little more fuel to make boost when free revving, I would expect 5-6psi for anything around the .63 exhaust housings when tuned nicely. else either the cooler is too large or the exhaust housing on the turbo is on the larger side causing the delay. you mentioned it was stock so probably the latter. unecessarily large cooler pipping or throttle body and even, base ignition timing can cause lazy throttle response. However, If it redlines the boost will drop off quickly as the VL's use fuel cut to prevent over revving. naturally it will require a new calibration in the ECU to sort that one out.
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chalky123Archived member
ive got a 2800 stall and stage 2 kit
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