AFM/boost problem

Ian200sx · Post by **Ian200sx** » Sun Jul 22, 2007 2:19 pm

My R32 GTR has picked up a odd glitch.

I haven

TonyB · Post by **TonyB** » Sun Jul 22, 2007 3:13 pm

Are you running a boost controller? Is it working? Is 0.7/0.8 base actuator pressure?

Post by **Stuart** » Sun Jul 22, 2007 3:21 pm

Stock is 0.7 -0.8 Tony, spot on.

Ian200sx · Post by **Ian200sx** » Sun Jul 22, 2007 3:47 pm

I am running a boost controller with the PFC I had thought it was stock boost but it struggles to hit 0.7bar at the moment. Also why would the warning light come on?

But will go check all the connections again :-D

gary@apt · Post by **gary@apt** » Sun Jul 22, 2007 4:29 pm

ian,

didnt we have problems with afms when mapping it??and light coming on at high boost

sounds to me if it had a leak its getting worse.....

Ian200sx · Post by **Ian200sx** » Mon Jul 23, 2007 7:00 pm

Yeah they were maxing out at 1.2 bar.

I don't know where to check, all the IC pipe works been off and seems ok but the DV stuff hasn't and the boost controller pipes haven't been 100% checked as there a bugger to get to. Can i run the car with out DV's?

Guess i'll have to start again checking for any air leaks, failing that you'll get the car back to sort it :-D

TonyB · Post by **TonyB** » Mon Jul 23, 2007 11:03 pm

Ian200sx wrote: Can i run the car with out DV's?

2" of Yard brush handle is not for off the size for plimbing the big pipe, tighter the better, be sure to sand bits off, if you can find nothing more appropriate, and just block the small pipes. <queue hillbilly music>

Quick and easy test to see if it is the DV's, they can seize/leak.

TonyB · Post by **TonyB** » Mon Jul 23, 2007 11:04 pm

Ian200sx · Post by **Ian200sx** » Sun Jul 29, 2007 4:39 pm

Well today I thought I

Fast Eddy · Post by **Fast Eddy** » Sun Jul 29, 2007 7:21 pm

Not necessarily mate,
Remember when the car is running and on boost you have a positive pressure acting on the back of the piston/diaphram to help keep it shut. When you let off power this turns into vacuum and helps the valve to open under the remaining boost pressure in the IC pipe. The std valves in good nick are meant to hold up to 1.5 bar according to RK!
I tested mine by removing them altogether and runing the car without. I did this by making up stainless blanking plates to go on the DV flanges.
Stu has some that he may let you borrow.
Hope this helps
Eddy

Bigpower

AFM/boost problem

AFM/boost problem

Re: AFM/boost problem