19.3psi fuel cut on MY00 PPP
#1
I would like to increase the overboost cut on a MY00 PPP, just by one psi or so, Anyone know if this can this be done? And if so - how? I don't want to lose it altogether, just raise is a tad!
#2
I would not go higher without either better cooling or a turbo.on track with PPP ECU and a Dawes MBC,intake peak temps. started getting a bit too high over 17psi. 16.5psi never went over 47c but after 7laps I had to pit at 18psi as we were over 50c.
#3
I'm not taking the car on the track, just the road. So I don't want to run higher held boost, I would just like to raise the overboost cut-out a bit - so that with a decat downpipe I don't hit it on peak boost on very cold days.
Can this be done?
Can this be done?
#4
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Pie,
Have you tried changing the restrictor for a larger one? This has been successfully used by several people to cure overboost with full decat systems on both PPP and STD cars.
Have you tried changing the restrictor for a larger one? This has been successfully used by several people to cure overboost with full decat systems on both PPP and STD cars.
#6
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1. If you are using the PPP to control boost there are two issues. The actual fuel cut itself really is a secondary one. The primary problem is that when the ECU sees held boost over 17 or so PSI it adjusts the duty cycle to reduce it. I *THINK* a fuel cut lifter from say 16.5 to 20 PSI would abolish this and then it would hold whatever your restrictor size dictated, but I am working on this at present.
2. If you are using another device to run 18 PSI on the road it is not unreasonable I don't think to move fuel cut up to say 20 PSI. Whilst setting the EBC up in my car I had a few surprise fuel cuts whilst overtaking things - a tractor once, truck another. Just keep your toe in at 3/4 throttle and it is fine, but you do use up some of the safety reserve you had - luckily I always leave LOADS for overtaking and always overestimate the space I require.
You can raise your fuel cut with an HKS FCD or try some of the DIY projects if you are handy with a soldering iron.
2. If you are using another device to run 18 PSI on the road it is not unreasonable I don't think to move fuel cut up to say 20 PSI. Whilst setting the EBC up in my car I had a few surprise fuel cuts whilst overtaking things - a tractor once, truck another. Just keep your toe in at 3/4 throttle and it is fine, but you do use up some of the safety reserve you had - luckily I always leave LOADS for overtaking and always overestimate the space I require.
You can raise your fuel cut with an HKS FCD or try some of the DIY projects if you are handy with a soldering iron.
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