T O P I C R E V I E W
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1988Stang
Member # 6280
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posted
Is an 8LD computer any good or is it crap, becuase i have had a lot of fuel problems, not getting enough. Only getting good amount of fuel when motor is cold, not warmed up.
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blind
Member # 3052
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posted
8LD is speed density, that actually makes your car faster than a stock MAF computer car (A9L, etc)
speed density does not react well to mods that change the vacume though, so if you recently put a new cam in that would be your problem.
you may also have a vacume leak, that would make your car run lean.
and how do you know its running lean when warmed up? Did you check the plugs?
things I'd check: vacume leaks ECT/ACT sensors (coolant temp) TPS, EGR, O2 sensors How old is the thermostat? Might be time to put a new 195* stat in there.
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1988Stang
Member # 6280
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posted
my motor has new 10 to 1 compression pistons, E7TE heads ported and polished, E-cam, roller rockers, edelbrock intake, 70mm throttle body, 75mm Pro M mass air meter calibrated to the 30 pound Ford Racing injectors. If that computer is a speed density computer than why is it in my car if my car is set up as a mass-air?
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silverLX
Member # 3207
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posted
I have an extra A9S I believe, if you want to try it out and see if it helps, your welcome to. Let me know.
In case you don't know, Healdsburg is about 30 minutes from Petaluma... [ December 12, 2005, 08:54 PM: Message edited by: silverLX ]
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1988Stang
Member # 6280
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posted
something i forgot, the motor is all new with 600 miles on it, all the sensors are new too. It is a 306. It has a brand new 180* thermostat in it.
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1988Stang
Member # 6280
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posted
What is the difference between an A9S and a A9L, I was just in healdsburg today too. But if that would the motor run better i would like to try it, and give you some money for it if you no longer need it. Thanks
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silverLX
Member # 3207
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posted
Well if you want me to take a look at it, I might be able to help you out.
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1988Stang
Member # 6280
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posted
Yeah that would be great, i sent you an e-mail, did you get it?
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silverLX
Member # 3207
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posted
Yes I got it.
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JohnB
Member # 969
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posted
I think the glaring question is why do you have a SD computer for a MAF setup?
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silverLX
Member # 3207
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posted
If it actually is a speed density computer, its in an 88 California car with factory mass air for some reason. He bought the car bone stock and it ran perfect until he put the new motor in. If it was the wrong computer, it would have ran like shit before. I am going to give him a hand and hopefully figure it out.
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1988Stang
Member # 6280
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posted
i think that is a great question. The guy i bought the car from (the origal owner) said that he never did anything to the computer or wiring, the car was all stock when i bought it. The weird thing is that my car is an 88 California, the first year of mass-air. Could that have anything to do with it?
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JohnB
Member # 969
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posted
What version 8LD is it? There is more than one. If this is a Cali car, it is version 2...due to the MAF. If it just started with the engine change, I'd look at the obvious...
Fuel Pressure and MAF calibration.
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1988Stang
Member # 6280
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posted
i have a pro M mass air calibrated for 30 pound injectors, and i have ford racing 30 pounds injectors. The car revs out at 5000 rpms at 40 psi fuel pressure, but when i bump it up to 50 psi the motor pulls hard to its rev limiter of 6200, but i shift at 6000.
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JohnB
Member # 969
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posted
You're setting the fuel pressure with the vac disconnected and plugged, right?
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