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Old Oct 9, 2010 | 08:28 PM
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Default Kb bap

I am going to be making a few changes to my car in the near future and I was wondering where the fuel system will peg with 60# injectors, LPE pump, and a KB BAP. This is on my 02 Z with the ECS sc600 kit.
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Old Oct 11, 2010 | 01:08 PM
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There's alot of variables, but the boost level, and redline are probably the most important factors. IMO, under 9 lbs, you should be OK.
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Old Oct 11, 2010 | 02:33 PM
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Well I seemed to have pegged the LPE pump at about 575 and I was looking to add meth and raise the boost from 7 to 10psi. Just wanted to know if the LPE pump and KB BAP is good for 650 wheel.
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Old Oct 11, 2010 | 05:03 PM
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Originally Posted by PhilsZ51
Well I seemed to have pegged the LPE pump at about 575 and I was looking to add meth and raise the boost from 7 to 10psi. Just wanted to know if the LPE pump and KB BAP is good for 650 wheel.
You say "I pegged the LPE/BAP @ 575", and maybe 7 psi boost? What exactly do you mean? Is the available fuel pressure just dropping, or something more drastic? On my first dyno tune with my new Vortech, the FP started dropping fast around 5800 RPM, and only 505 HP (Mustang). This is with LPE pump only, no BAP. When we added a Magnason BAP, the FP kept going strong to our pre-determined redline.(6500) At this point the Mustang dyno was registering 570@7.6psi, and still rising, but I want it very conservative. My AFR was about 10.5, and the timing was also very conservative. So probably, getting to 650 with your setup should be doable. Lots of factors involved.
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Old Oct 11, 2010 | 08:18 PM
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Yea, the fuel pressure began to drop above 5000RPM. I was never using a BAP. The car made that power with just the LPE pump, so I figure if I toss in a BAP, it will hold fuel pressure for longer.
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Old Oct 12, 2010 | 01:44 AM
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Originally Posted by PhilsZ51
Yea, the fuel pressure began to drop above 5000RPM. I was never using a BAP. The car made that power with just the LPE pump, so I figure if I toss in a BAP, it will hold fuel pressure for longer.
That's what I added, and it did the trick to redline, although my tuner used a different BAP. I think my new power level will keep me happy for a while. With the BAP added, my tuner actually had to lean it out, and the pressure didn't drop at all, so there's no telling how much more I could get with my setup. I want safe, and to enjoy driving my car for a change, instead of always modding it. 17k miles in 8 years is not enough.
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