*UPDATE: Hooked up fuel pressure gauge* Runing lean at top of RPM before shifting
#66
10 Second Club
iTrader: (26)
Its a way to make sure you don't have any large voltage drops or weak connections between the battery and the trunk. Like you said, you did the fuel pump and filter which are the main causes of fuel pressure dropping. I guess the regulator could be going, but haven't seen it on stock pumped car.
#70
TECH Senior Member
#75
TECH Senior Member
#77
TECH Senior Member
#79
update!
last week I placed an order for both a replacement walbro gss340 255lph and a fuel pressure regulator. with my spare walbro fuel pump assembly I swapped out the components then with that assembly swapped the oem fuel pump assembly that was currently in the car. went out for a drive and looks like the problems fixed. before I swapped the fp assemblies around, I tsted the fpr that was in the walbro and blew into the nipple port and air came out of the sides while the new fpr I couldn't even blow into it as it felt like an obstruction. I haven't tested blowing air into the oem fpr yet but i'll check when I get off work later today.
I need to retune and lean the maf table again but nonetheless, it feels great to see the AFR steady up to redline. feels great with the new 3600 stall too!
last week I placed an order for both a replacement walbro gss340 255lph and a fuel pressure regulator. with my spare walbro fuel pump assembly I swapped out the components then with that assembly swapped the oem fuel pump assembly that was currently in the car. went out for a drive and looks like the problems fixed. before I swapped the fp assemblies around, I tsted the fpr that was in the walbro and blew into the nipple port and air came out of the sides while the new fpr I couldn't even blow into it as it felt like an obstruction. I haven't tested blowing air into the oem fpr yet but i'll check when I get off work later today.
I need to retune and lean the maf table again but nonetheless, it feels great to see the AFR steady up to redline. feels great with the new 3600 stall too!
#80
So i got 2 dtc codes 0327 and 0332 for both knock sensor banks. What are the chances i kinked the wires down? I was able to reach to the knock sensor connector that is hooked to the fuel rail and it's in tight. Will i need to replace the 2 sensors as well as the wiring harness? Damnit i will have to remove the intake manifold again.
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Last edited by fst100; 05-08-2018 at 01:34 PM.