Hello,
I have a friend with a Nissan Skyline R33 GTS-t series 1.
The problem is that it doesn't run good, so we put it on a dyno and discovered it was running to lean under boost.
it runs around lambda 1 or AF 14.7 on boost, this should be around 11.5 i believe.
we checked timing and this is correct, changed lambda, fuel filter, ECU, AFM all this doesn't help.
Now we had a look at the fuel pressure this is around 2,5 bar (38 psi). i heared that this should be around 3 bar,is this correct.
Or should we look some where else
regards,
Sander Naberman