2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
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Old 09-07-03, 05:32 PM
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carborator

is the 87 carborator, or electronic injectors. Wanna know how hard it is to tune the air fuel mixture?
Old 09-07-03, 05:50 PM
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N/a or TII?

First of all they are both fuel injected. You can't change anything about the fuel mix to air with stock ECU. You need a piggy back or a standalone EMS or Fuel controler to change anything. Then you need to run it on a dyno with a wideband or EGT guage.

Why do you want to mess with the AFR?
Old 09-07-03, 06:02 PM
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I was running and testing a car and it was running a little rich. I asked him how I can tune it and he said it was pretty easy. there's a **** in the ecu that I can rotate to tune it. he said it was real easy and he can just show me when I take a look at the car again.

ps. I talked to him about the air fuel ration and tuning it over the phone when I got home.
Old 09-07-03, 06:03 PM
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oh yeah, the car is a 87 TII.
Old 09-07-03, 06:15 PM
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There is no *** on the ECu there is one screw for adjusting the AFR for the idle but you CAN NOT tune the car with that.
Old 09-07-03, 06:27 PM
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It already passed smog just this summer. But lets say that I had to take it for a smog test and it was running a little rich. I can't get it through by messing with that AFR screw?

how much to get a fuel controler?

sorry if I'm coming off as a total illiterate on this.
Old 09-07-03, 06:29 PM
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well you shouldn't have trouble passing emmissions if the car is stock and well running.

What has the car had done to it?

A fuel controller can run you from 200-350 dollars and an EMS would be around 900 dollars for a LT8. This would also need dyno tunning with a good tunner.
Old 09-07-03, 06:38 PM
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other than the rebuilt engine and the thicker apex seals he put on a single thermal exhaust. He said he had to clean the egr. Also he took off the intake box. but he still has it so I can put it back if I wanted to. Also he found out that one of injectors were bad so he had a fuel system calibration done in august. It seemed to run good on the test drive, other than running a little rich. So what do you think?
Old 09-07-03, 06:43 PM
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there's a **** in the ecu that I can rotate to tune it.





I want one, and I also want an ECU that has an on/off switch on it that say "tuned" "untuned". That way I can change from day to day.


I reall want to know who told you that.
Old 09-07-03, 06:45 PM
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****???

LOL
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