First off car is obd 1 2.0 running c2 stage 2.
Car ran great never lean,no issues.
Then one day anything over 15psi its so lean it misfires.
So being the technician i am i check some things out
All ign components are new and OEM.Plugs are gapped right.
According to the wideband car has plenty of fuel right up to 15psi.
Now 15psi is where the boost takes off to 22 psi in about a second.I've always had the meth come in around here to keep if from leaning out.
So i get back to the shop and go hey i know the ebay walbros arent the best(mine does say walbro on it and made in the usa so idk if its a knock off)
Hook up a fuel pressure gauge.Fuel pressure on the stock fpr is around 35 at idle and 50 at WOT.
At this point i know i was having a fuel issue more then a spark.
I put in a 4.0bar and pressure were much higher.Idle was around 43psi and pegged my gauge out(60psi) at WOT.
Now car runs,i mean runs(3rd,4th pull afr was 11.8 at 6600rpm!)But with the 4 bar its got some ****ty 3/4 throttle drivability other then thats its great.But i would like to know what caused me to have change my setup
So is my pump ****ting the bed slowly?Because i have no clue otherwise
PS:intake helper pump is new and properly attach to the fuel pick up.
PPS:Also i have a 1.8t fuel filter pre walbro could that be an issue?
PPPS : the pump is noisier some days then other.Does not matter on tank level
and finally pic for click
my last dyno