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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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retarding my timing at the dme
i just took the DME apart and didn't find anything burnt. the chip looks like the stock one. i did adjust the timing, using FRWilk's web page, http://frwilk.com/944dme/of.htm . i set the timing back using setting 4, leaving the mixture the same.
i've been having problems with the car cutting out under hard acceleration, and i wonder if setting it back will cure this. also, it failed NOx emissions, retarding the timing should help. ALSO, about a third of the gas in the car is at least a year old, so i think that is the real problem. after i get it tested again, i'll have a better idea what is going on...
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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10-05-2005, 12:26 PM
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where on Wilk's website does it discuss adjusting the timing and the mixture from the DME? I can't seem to find the page.
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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10-05-2005, 01:02 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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look for fuel quality switch, top left of the page.
not sure this accomplished anything. it did cut out again, but not nearly as severe as before. accelerations seems a bit smoother, but that could just be my foot...
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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10-05-2005, 01:48 PM
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Registered
Join Date: Jul 2001
Location: Edmonton, Alberta, Canada
Posts: 4,530
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If you think its a fuel quality issue.........
You could always throw in a gallon of xylene.....until you completely burn it off. Now when you say cuts out. What have you checked up to this point ?
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Alex - PCA Polar Region - Boxster Muncher 86' 944 Turbo - Megasquirt - 326 rwhp/340lbft @ 18 psi SOLD www.edmontonhomelife.com www.edmontonrealestate.ws |
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10-05-2005, 01:49 PM
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my car runs a little on the rich side. Anybody have any info on how to lean it a little using this switch (Wilk?)
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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10-05-2005, 01:53 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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i've checked vacuum hoses, opened the DME to make sure nothing is burnt, cleaned all the electrical connections under the hood that i could find (including connectors at the injectors), verified BOV is not shot, there are two bottles of injector cleaner in the fuel. i am starting to think the wastegate might be stuck or something. it seems to hit full boost, about 1.6 BAR according to my gauge and the car just shudders and i hear a loud pop from the back, like a backfire. scared the shiznit out of my wife the other day.
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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10-05-2005, 01:54 PM
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clogged cat?
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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10-05-2005, 01:55 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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Quote:
setting two on the switch. i used a golf tee that i wittled down to turn the switch.
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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10-05-2005, 01:56 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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Quote:
also, i noticed a 'catalytic converter gong' with the other relays... what the hell is that?
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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10-05-2005, 01:58 PM
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Quote:
http://www.frwilk.com/944dme/fqswitch.htm
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''87 944na 85k C02 / M158 / M418 / M425 / M431 / M454 / M533 / M650 / M946 '94 Oldsmobile 88 Royale (winter beater) Its not what you drive, its what drives you. |
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10-05-2005, 02:05 PM
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Registered
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Location: Edmonton, Alberta, Canada
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CJ for your rich problem I would look at the temp sender for the dme first.
The Fqs switches really should not be played around with unless you are in an area with low quality fuel. Aftermarket chips take advantage of the Fqs positions as well...but thats a whole other story. Nynor did pulling timing back help ?
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Alex - PCA Polar Region - Boxster Muncher 86' 944 Turbo - Megasquirt - 326 rwhp/340lbft @ 18 psi SOLD www.edmontonhomelife.com www.edmontonrealestate.ws |
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10-05-2005, 02:19 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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it seemed to help a bit. on acceleration, especially from a stop, it would kind of pause a few times. it seems to accelerate smoother now. also, when it cut out today, it didn't seem quite so severe.
i am thinking it is the fuel or i have a bad wastegate/vacuum leak. i need to get under the car and check out all the lines there. the PO claims the engine has been rebuilt, barely has 300 miles on it now and that all those lines were replaced.
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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10-05-2005, 02:45 PM
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CJ, if you a running a Power Prom 2 you are gonna run a little rich no big deal and nothing will get hurt, the chip is setup to be that way. If you gotta pass smog just switch back to normal mode
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1986 951, Stock for now. ]87 924S Gaurds red- SOLD after 11 years of ownership |
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10-05-2005, 04:08 PM
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Quote:
__________________
Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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10-05-2005, 07:12 PM
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2007 Porsche Cayman S
The Viridian Falcon
SOLD! -- The Purple Pig
SOLD! -- Mighty Mouse
SOLD!! -- Alpine Wolf
1987 Porsche 944 2.5L 4 Cyl, 8 Valves
1987 Porsche 924S 2.5 modified
