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sleepydsm · 10-22-2005

1992 Tsi AWD 5 spd
255 walbro
afpr
650cc
safc(5 knob)
maft v1.6
3" gm maf
20G w/ external hks wg
greddy type rs bov
correct timing
new wires
new plugs
good coil
good transitor
new ecu caps/good ecu

The Problem: At any boost level above 10 psi in any gear, at about 4200-4500rpm it knocks and at about 5000rpm the whole car jerks and like stops pulling. Is this fuel cut? I have heard that the MAF translators have a fuel cut switch. I honestly know NOTHING about the MAF translator, as I bought the car and it was already set for the 650ccs. I thought it was an ignition problem, so I checked the coil, tried my friends brand new power transistor, and even replaced the ecu caps. And it was none of those. Thanks!!

Also... my fuel pressure is set at ~28psi. I'm guessing its because I have a 255 L/hr High Pressure fuel pump, and the base fuel pressure was turned down to prevent FPR overrun at idle.

10-22-2005	#1
sleepydsm Kevin Join Date: Jan 2004 Location: Shoreview Posts: 3,356	Fuel Cut? 1992 Tsi AWD 5 spd 255 walbro afpr 650cc safc(5 knob) maft v1.6 3" gm maf 20G w/ external hks wg greddy type rs bov correct timing new wires new plugs good coil good transitor new ecu caps/good ecu The Problem: At any boost level above 10 psi in any gear, at about 4200-4500rpm it knocks and at about 5000rpm the whole car jerks and like stops pulling. Is this fuel cut? I have heard that the MAF translators have a fuel cut switch. I honestly know NOTHING about the MAF translator, as I bought the car and it was already set for the 650ccs. I thought it was an ignition problem, so I checked the coil, tried my friends brand new power transistor, and even replaced the ecu caps. And it was none of those. Thanks!! Also... my fuel pressure is set at ~28psi. I'm guessing its because I have a 255 L/hr High Pressure fuel pump, and the base fuel pressure was turned down to prevent FPR overrun at idle. Last edited by sleepydsm; 10-22-2005 at 10:16 PM..