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Jeep turbo....FMU or AFC?

Old 09-30-2008, 04:21 PM
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Default Jeep turbo....FMU or AFC?

Im turboing my 95 XJ 4.0 I have been trying to figure out how to get some fuel in it cheaply. SO I bought an FMU, an inline booster pump, a VAFC, 24lbs ford injectors, and a MSD BTM. Im trying to decide on what to run. Im only going to run 8 psi on a T3/T04E .48/.60 ching chong.

1. stock 19 lbs injectors, FMU, pump, and BTM but then I high fuel rail pressure.
2. AFC, some 30+ lbs injectors, and BTM. High ignition timing reguardless.
3. AFC, 24 lbs injectors and the FMU to bump it?

Anyone have any good ideas? This setup may not get intercooled due to lack of room either so the timing thing may be an issue.
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Old 09-30-2008, 04:32 PM
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Default Re: Jeep turbo....FMU or AFC?

Option # 2 just set the BTM with a steep retard and then carefully play with it.Those are pretty low compression anyways arent they?
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Old 09-30-2008, 04:38 PM
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Default Re: Jeep turbo....FMU or AFC?

switch to a holley 600cfm x-bore and be golden
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Old 09-30-2008, 05:45 PM
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Default Re: Jeep turbo....FMU or AFC?

Originally Posted by 90dx
Option # 2 just set the BTM with a steep retard and then carefully play with it.Those are pretty low compression anyways arent they?
8.8 comp. Its pretty low. The other Jeep guys run no retard with 2 bar map sensors and let the advance fly with no regard. They seem to take it well.
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Old 09-30-2008, 05:46 PM
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Default Re: Jeep turbo....FMU or AFC?

Is '95 the year Jeep started using crack prone heads or was newer?
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Old 09-30-2008, 06:32 PM
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Default Re: Jeep turbo....FMU or AFC?

00-01 0331 casting
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Old 09-30-2008, 09:20 PM
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Default Re: Jeep turbo....FMU or AFC?

get an old amc 258 block and swap a 4.0 head on. low 10's for comp and more hp then the 4.0
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Old 09-30-2008, 10:29 PM
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Default Re: Jeep turbo....FMU or AFC?

Originally Posted by c0mpl3x
get an old amc 258 block and swap a 4.0 head on. low 10's for comp and more hp then the 4.0
WTF does that have to do with my engine management question? I would build a stroker before doing that.
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Old 09-30-2008, 11:02 PM
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Default Re: Jeep turbo....FMU or AFC?

Originally Posted by CSaddict
WTF does that have to do with my engine management question? I would build a stroker before doing that.
bigger stroke
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Old 09-30-2008, 11:21 PM
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Default Re: Jeep turbo....FMU or AFC?

no, Im talking 4.7 stroker. Hesco head. etc....
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