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Registered
Join Date: May 2005
Location: Tucson
Posts: 203
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924s DME
My '88 924s has a fried DME, but ive found a used replacement is going to be expensive and hard to come by. Someone here mentioned I could use the DME AND the air flow meter from an earlier 944 or 924s and make it work, but I couldn't find the post by searching.
So my questions are: Has anyone something like this? What will it change about my car's power / mpg/ etc.? At what cost $$? Thanks as always. -Gabe
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-Gabe -black 1988 924s, 944 turbo sway bars, LSD, gunmetal phone dials-- SOLD to some people who cannibalized her -1987 MR2 ---ONLINE REP FOR RADMACHER PORSCHE SERVICE IN TUCSON--- |
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07-05-2006, 12:34 PM
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88 924S DME part number: 944 618 121 05.
It's the higher compression.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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07-05-2006, 12:49 PM
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Join Date: Aug 2001
Location: Brighton UK since 11/2012
Posts: 3,170
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Sure it's the DME? If so they can be rebuilt. Make sure you replace the DME relay as well.
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From November 2012; Precision Porsche Specialist Sussex UK, +44 (0)1825-721-205 2001-2012 Gerber Motorsport Inc. 206-352-6911 07.15.06 1996 Ducati 900SP. Suprisingly enough, it's red 08.16.09 1999 Kawasaki ZRX1100. Green. |
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07-05-2006, 02:37 PM
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Location: Tucson
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SoCal- how does the higher compression affect what DME i need? Does the 88 DME inject more fuel/air to take advantage of the higher compression?
Thanks Bitwrench, ive been through everything else- reference sensor, wiring, and already replaced the relay, so I will look into rebuilding.
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-Gabe -black 1988 924s, 944 turbo sway bars, LSD, gunmetal phone dials-- SOLD to some people who cannibalized her -1987 MR2 ---ONLINE REP FOR RADMACHER PORSCHE SERVICE IN TUCSON--- |
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07-05-2006, 02:50 PM
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Join Date: Jul 2004
Location: Upstate New York
Posts: 3,269
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The fuel injection and timing maps in the 88 dme are tuned to the higher compression motor vs. the lower compression in the earlier motors.
If you put the earlier brain in, it will work, but poorly. Plan on losing about 15 bhp at peak if you use the early brain. You should put the right ecu in your car. They may be fairly rare, but not so rare that they cannot be found.
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Good luck, George Beuselinck |
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07-05-2006, 02:54 PM
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Location: Tucson
Posts: 203
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Thanks a lot to everyone
 I'll get the right one.
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-Gabe -black 1988 924s, 944 turbo sway bars, LSD, gunmetal phone dials-- SOLD to some people who cannibalized her -1987 MR2 ---ONLINE REP FOR RADMACHER PORSCHE SERVICE IN TUCSON--- |
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07-05-2006, 03:11 PM
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Join Date: Mar 2004
Location: Tacoma, WA
Posts: 748
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I've got a good '88 DME ECU. Make me a reasonable offer and it's yours
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07-05-2006, 08:54 PM
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1983 Porsche 944 2.5 liter
