#1
|
|||
|
|||
low boost
Hi all, just wondering why my scoob has low boost. 7psi, its running about 290bhp, its a 93 wrx.. why I ask is my other scoob was running 14psi.. ive got the same ecu and everything else, any ideas
|
#2
|
||||
|
||||
Checked all the boost pipes?
What's the reading at Idle? Has someone changed bottom pipe on the 3 port?
__________________
2001 Bugeye - Project Black/Red, 1997 JDM Type R, 1995 V1 WRX, Defender Tithonus MOD Styleeee! |
#3
|
|||
|
|||
no boost leeks, -20 on idle. no bottom pipe not changed. - 20 is what other scoob idles at too
|
#4
|
||||
|
||||
Any faults stored?
__________________
2001 Bugeye - Project Black/Red, 1997 JDM Type R, 1995 V1 WRX, Defender Tithonus MOD Styleeee! |
#5
|
|||
|
|||
no. ive even swapped the BCS.s over
|
#6
|
||||
|
||||
Blow down the pipe the runs to the actuator, if you can blow, the diaphragm inside is gone. Swapped one over for a guy on Surrey at the weekend just gone.
__________________
2001 Bugeye - Project Black/Red, 1997 JDM Type R, 1995 V1 WRX, Defender Tithonus MOD Styleeee! |
#7
|
|||
|
|||
will try that
|
#8
|
|||
|
|||
done the above test. actuator working fine
|
#9
|
||||
|
||||
Boost gauge plumbed into the wrong pipe.
Your reading actuator cracking pressure rather then manifold pressure. |
#10
|
|||
|
|||
Boost gauge plumbed into manifold
|
#11
|
||||
|
||||
Well you won't be getting 290BHP from 7psi.
That's more like a figure generated by 16psi (and even that's if everything is top notch w.r.t MAF, Plug's, Coilpacks, Fuel Pump, Turbo and compression). |
#12
|
|||
|
|||
when it went to surry rolling road last year the print out says 290. but it had good boost then. its just dropped for some reason
|
#13
|
||||
|
||||
Probably a knackered MAF then if the CEL hasn't come on.
Sometimes cleaning the MAF with carb cleaner will bring it back temporarily. |
#14
|
|||
|
|||
ok will try that, thanks
|
#15
|
||||
|
||||
The early MY92-96 have a tendency to drop the boost target down to protect the car when it spots a MAF fuelling issue. It doesn't normally throw up a CEL either.
If you can boz one from someone else it could be worth a pint........ |
#16
|
|||
|
|||
I have a maf from my classic, had it removed when daughterboard was fitted, was working fine before that.
if you need to test |
#17
|
|||
|
|||
I had this scott if you remember we fitted dawes device to compensate
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
|