Throttle cutting...
Thread Starter
AudiWorld Super User
Joined: Apr 2003
Posts: 3,931
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From: Current: 2005 Volvo XC90 & 1996 Corsica
Throttle cutting...
Ok, first here are the details:
2000 1.8T 018Q ECU
ko4
GIAC k04's k31 (NOT j31) program
SMIC
High flow cat
Borla exhaust
I'm boosting at about 27psi and after about 2-4 seconds in WOT, the throttle cuts to 30%. No codes are being thrown.
Does anyone have any idea why? I have logs of block 003, 032 and 114.
2000 1.8T 018Q ECU
ko4
GIAC k04's k31 (NOT j31) program
SMIC
High flow cat
Borla exhaust
I'm boosting at about 27psi and after about 2-4 seconds in WOT, the throttle cuts to 30%. No codes are being thrown.
Does anyone have any idea why? I have logs of block 003, 032 and 114.
Thread Starter
AudiWorld Super User
Joined: Apr 2003
Posts: 3,931
Likes: 0
From: Current: 2005 Volvo XC90 & 1996 Corsica
Agreed....
But why is my throttle cutting? I have a feeling it is becuase the program doesn't have the code to override that. The j31 program overrides the throttle cut.
<shrug>
<shrug>
Thread Starter
AudiWorld Super User
Joined: Apr 2003
Posts: 3,931
Likes: 0
From: Current: 2005 Volvo XC90 & 1996 Corsica
K31 does, J31 doesn't....
I need to fool the pressure sensor to think that it has less boost than it reports.
I smell the diode fix coming on.
I smell the diode fix coming on.
AudiWorld Super User
Joined: Oct 2003
Posts: 18,424
Likes: 3
Charge Pressure Exceeded.. not all ECUs will store this...
...as it is a momentary cut to safe mode. And in a moment you're back at full power again.
You are in danger land... the KO4 can take the pressure but stock internals can't you are pushing over 1.6 bar.
Piston rods can fracture and blow a hole in your block. (family experience)
You are in danger land... the KO4 can take the pressure but stock internals can't you are pushing over 1.6 bar.
Piston rods can fracture and blow a hole in your block. (family experience)
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You want the J31 chip not the K31. There were issues with the older K31 chips.
J31 is the one that will not close the throttle since it is based on my M31 K03 chip which ran 24psi. If you want a chip that runs less boost then you need to get the K05 version chip, which runs 22psi.
Dont do the diode fix for these chips, it will just confuse the ecu since IIRC the boost ratio is just changed. This is why you will only see a 2500 mbar reading at 28psi.
Dont do the diode fix for these chips, it will just confuse the ecu since IIRC the boost ratio is just changed. This is why you will only see a 2500 mbar reading at 28psi.