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Old 01-18-2004, 04:20   #1 (permalink)
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trip computer

Can anyone tell if a trip computer will work with a cfi motor?

Matt
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Old 01-18-2004, 04:34   #2 (permalink)
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Re: trip computer

were they fitted to EA Fairmonts, some EA fairmonts are CFI, so i assume it would work
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Old 01-18-2004, 04:34   #3 (permalink)
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Re: trip computer

Should work, how accurate it would be I dunno though.
The CFI amd MPFI setups use the same two-pulse system.
MPFI one pulse operates 3 injectors, 2 pulse operates the other 3. Cfi, one pulse per injector.

Since AFAIK the computer uses a set value to tell it how much fuel was run through on each pulse, you may find it thinks you're using slightly more fuel than you were.
Or, it might be accurate. Each CFI injector should theoretically flow as much in one pulse as 3 MPFI injectors.


Basically, try it. Should work. Helpful huh.
Alex
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Old 01-19-2004, 00:06   #4 (permalink)
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Re: trip computer

Quote:
Originally Posted by TallyStar
were they fitted to EA Fairmonts,
Nope. The Fairmonts came with a basic digital clock. Only the Ghia, Fairlane and LTD scored a trip computer and they were all MPI anyway.

Ash
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Old 01-19-2004, 03:53   #5 (permalink)
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Re: trip computer

i am installing one tomorrow so i will let you know how it goes ( ea GL centrepoint -spak dash loom)
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Old 01-19-2004, 04:04   #6 (permalink)
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Re: trip computer

Quote:
Originally Posted by d_slayer
i am installing one tomorrow so i will let you know how it goes ( ea GL centrepoint -spak dash loom)
ill be interested to see how u go, mabe i give a go
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Old 01-19-2004, 16:48   #7 (permalink)
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Re: trip computer

it works, but i wouldnt rely on its accuracy for fuel economy.

i fitted mine when on CFI. it also works while on gas, cause the ECU still thinks its running injectors - but the economy reading would again be out.

Jase
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