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Old 12-28-2001, 11:04 AM
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Default quick FMU question!

hey guys i got the re-calibration kit.....im gonna pop in the 8:1 and see how that works with my 310's

my problem is it doesnt say which disc is which, how can i tell? does anyone have any clue? measurements? i dont know!
Old 12-28-2001, 11:30 AM
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Default Re: quick FMU question! (NYb16)

If you have the kit it will be the 3rd from the largest. The largest is the 12:1, the 2nd largest 10:1, 3rd largest 8:1 and so on. Happy boosting
Old 12-28-2001, 04:23 PM
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Default Re: quick FMU question! (NYb16)

this 8:1 disk and 310 injector combo...does it require a fuel controller to make it run decent or will it work fine without the controller? open to anyone with the answer!
Old 12-28-2001, 05:58 PM
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Default Re: quick FMU question! (automatic hustler)

I was told that 310's work fine for stock ecu.. anything larger needs an SFC.. i have 370's and use a fields.. works pretty good from what I can tell..
Old 12-28-2001, 06:02 PM
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Default Re: quick FMU question! (GSRwBOOST)

ok thanks.
Old 12-28-2001, 06:23 PM
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Default Re: quick FMU question! (automatic hustler)

I have the VAFC....not installed though....

But i have the 310s and the 12:1 and i used to run fine, now my car runs like crap, it bogs, hesitates, chokes, gags, etc etc. i am getting roughly 4 mpg. My engine is getting so much fuel that it is choking itself. so im gonna try to switch my disc, but it USED to work fine, for about 4,000 miles. so i dont know whats up, im gonna switch the disc see if that helps, if not then my FMU is stuck, i assume open? or is it closed? anyone with insight?
Old 12-29-2001, 06:54 AM
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Default Re: quick FMU question! (NYb16)

anyone???????

Also, i know that i need to use the 8:1 disc, but it also has a bunch of rings that come with it, which one do i use?
Old 12-29-2001, 08:21 AM
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Default Re: quick FMU question! (NYb16)

in order from biggest to smallest
12:1, 10:1, 8:1, 6:1, 4:1

And you use the ring which fits the best with the disc you use


[Modified by Strng1dah, 9:21 AM 12/29/2001]
Old 12-29-2001, 11:43 AM
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Default Re: quick FMU question! (Strng1dah)

I still think your FMU is locked open. When you take the FMU apart to change the disc, make sure that the cylinder slides smoothly in the sleeve.

Dustin
Old 12-29-2001, 06:40 PM
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Default Re: quick FMU question! (dustin)

what can happen if i DONT use those rings, and just use the disc? it came stock with just a 12:1 disc, no ring..........anyone?
Old 12-30-2001, 12:36 AM
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Default Re: quick FMU question! (NYb16)

I'm just wondering. say if you have 440cc injectors and a 255lph fuel pump, how do you figure out which ratio fmu to buy ?
Old 12-30-2001, 08:39 AM
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Default Re: quick FMU question! (accordfreak)

i know its a formula...just dont know which one....

where do u order an extra disk???
Old 12-30-2001, 12:11 PM
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Default Re: quick FMU question! (FBP Ex-T)

what can happen if idont use the rings taht come with it? and only use the disc!!
Old 12-30-2001, 02:46 PM
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Default Re: quick FMU question! (NYb16)

Be aware that when you raise your your fuel pressure, the volume of fuel the pump can flow drops. Check out http://www.hondata.com/techfuelpump.html



Doug

Old 12-30-2001, 03:08 PM
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Default Re: quick FMU question! (Hondata)

NYb16, maybe you have a messed up O2 sensor?
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