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Author Topic: 2.5 turbo question  (Read 5711 times)

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Offline sharpxmen

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Re: 2.5 turbo question
« Reply #30 on: December 11, 2009, 10:40:42 PM »
Quote from: bluepwr on December 11, 2009, 10:31:45 PM
[...] the factory pump is only good for 7psi [...]

i require translation on this one
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'95 YJ, NSG370 6spd / Hurst shifter, Dana 300 + 4:1 Doubler / tri-stick, Custom skid, Super D35 / Auburn LSD / 4.88, 35x12.5x15 BFG KM2, 64mm t/b, 1.7 RollerRockers, MkVIII e-fan, Dual Diaph Booster
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Offline chardrc

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Re: 2.5 turbo question
« Reply #31 on: December 12, 2009, 07:56:53 AM »
Quote from: bluepwr on December 11, 2009, 10:31:45 PM
how is the project going ? did you fix the Jeep
you need split second FTC1-019B and a fuel pump booster. the factory pump is only good for 7psi and you're 44lbs injector is not a problem.

what? even the tbi pump is good for 14psi and tbi runs way lower pressure than mpfi... unless you looking at huge volume rates
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1990 YJ 4cly, ax5, 2.5 inch BDS lift, 31 MTr\'s,  Powertrax-lockers all around, track-bars removed, boomerang shackles, warn m8000 winch, electric fan. [sold but not forgotten]

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bluepwr

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Re: 2.5 turbo question
« Reply #32 on: December 12, 2009, 08:24:38 AM »
after 7 PSI of boost the factory pump has a hard time keeping up and the wide band starts going lean
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Offline sharpxmen

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Re: 2.5 turbo question
« Reply #33 on: December 12, 2009, 08:31:42 AM »
Quote from: bluepwr on December 12, 2009, 08:24:38 AM
after 7 PSI of boost the factory pump has a hard time keeping up and the wide band starts going lean
ok, so you're talking about boost - it should be fine but a larger pump or a pump booster won't hurt for sure
the guy that started the thread has not been around for some time (on the site). He sent me a pm and he said he got an AEM piggyback for OBDII and that his injectors were putting out too much fuel (probably not at full boost which i thought he was ok for the 15psi), he was also running alcohol injection.
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'95 YJ, NSG370 6spd / Hurst shifter, Dana 300 + 4:1 Doubler / tri-stick, Custom skid, Super D35 / Auburn LSD / 4.88, 35x12.5x15 BFG KM2, 64mm t/b, 1.7 RollerRockers, MkVIII e-fan, Dual Diaph Booster
Latest: Corbeau BajaRS heated seats :dance: keeping warm the rear end

alexr40

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Re: 2.5 turbo question
« Reply #34 on: January 11, 2012, 10:32:56 AM »
Quote from: bluepwr on December 12, 2009, 08:24:38 AM
after 7 PSI of boost the factory pump has a hard time keeping up and the wide band starts going lean

not true.. I run super rich at 10.9-11.3 under boost and  12.3-13.0 cruising with stock fuel pump and 850cc injectors (huge). 40% duty cycle on injectors at 7psi full boost.
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