Hi guys
I have posted occasionally about my car - I'm in Australia and there is very little experience with these cars here and I have modded my car and my tuner is struggling a little, but because there aren't any other Terminators here, no one else has any more experience that I could take it to. So -
I have a 2002 Cobra, 5 years ago I put in a 2003 Cobra drivetrain with a 2.8in pulley, 6-speed trans, 03 fuel tank and pumps, 03 FPDM etc and all good for 5 years. Only 417rwhp and it dropped off quite quickly after 5500, but it ran reliably and I was very happy.
So, fast forward to this year and my mechanic has put on a 2.3L Whipple with a 3inch pulley, a SBTB, 60lb injectors, JLT CAI, BA2600 MAF, 20a BAP (later edit - this is a 40a unit), 3 inch exhaust and Hi-Flo cats. It fired up perfectly but obviously needs a tune.
So, I booked it into a local tuner who comes highly recommended for tuning the local Australian 5.0L S/C and 4.0L Turbo FPV cars and they're really struggling - due to the age of the car, the codes and software required and knowledge of what does what in the tune.
So - the current state of affairs is this: The car runs, makes lots of boost but is building too much fuel pressure at idle.
At idle, the pressure is going up towards 100lbs even with the BAP adjusting knob turned down. They're suggesting that to resolve this I need an external regulator and a return system, probably located just outside the pump and that will allow excess fuel pressure to be routed back. While I can understand that this is likely to work, it seems odd that they cannot find a way to 'turn down' the fuel pressure through the mapping, and this just may be an experience thing.
When I talk to them, they say they've tried turning the fuel pressure down in the tune, adjusted the duty cycle of the injectors etc but the issue is still excess pressure at idle.
SO - is there anyone who has had specific tuning experience with these cars, who might have come across this issue, struggled with it then had a 'lightbulb' moment and figured out how/where to adjust and control the pumps better actually within the tune, rather than put in an external regulator and return system - or is that really the only way to go?
Sorry for the long post guys, but my car has been there 7 weeks today and I would like it back and I guess they would like the room...
I have posted occasionally about my car - I'm in Australia and there is very little experience with these cars here and I have modded my car and my tuner is struggling a little, but because there aren't any other Terminators here, no one else has any more experience that I could take it to. So -
I have a 2002 Cobra, 5 years ago I put in a 2003 Cobra drivetrain with a 2.8in pulley, 6-speed trans, 03 fuel tank and pumps, 03 FPDM etc and all good for 5 years. Only 417rwhp and it dropped off quite quickly after 5500, but it ran reliably and I was very happy.
So, fast forward to this year and my mechanic has put on a 2.3L Whipple with a 3inch pulley, a SBTB, 60lb injectors, JLT CAI, BA2600 MAF, 20a BAP (later edit - this is a 40a unit), 3 inch exhaust and Hi-Flo cats. It fired up perfectly but obviously needs a tune.
So, I booked it into a local tuner who comes highly recommended for tuning the local Australian 5.0L S/C and 4.0L Turbo FPV cars and they're really struggling - due to the age of the car, the codes and software required and knowledge of what does what in the tune.
So - the current state of affairs is this: The car runs, makes lots of boost but is building too much fuel pressure at idle.
At idle, the pressure is going up towards 100lbs even with the BAP adjusting knob turned down. They're suggesting that to resolve this I need an external regulator and a return system, probably located just outside the pump and that will allow excess fuel pressure to be routed back. While I can understand that this is likely to work, it seems odd that they cannot find a way to 'turn down' the fuel pressure through the mapping, and this just may be an experience thing.
When I talk to them, they say they've tried turning the fuel pressure down in the tune, adjusted the duty cycle of the injectors etc but the issue is still excess pressure at idle.
SO - is there anyone who has had specific tuning experience with these cars, who might have come across this issue, struggled with it then had a 'lightbulb' moment and figured out how/where to adjust and control the pumps better actually within the tune, rather than put in an external regulator and return system - or is that really the only way to go?
Sorry for the long post guys, but my car has been there 7 weeks today and I would like it back and I guess they would like the room...
Last edited:
