'89 6E fuel tuning question
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Junior Member
Joined: Dec 2001
Posts: 83
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From: NC
Car: 1989 Trans Am
Engine: 350 TPI
Transmission: 700R-4
'89 6E fuel tuning question
my laptop has been down so mind you i'm just using a scan tool for readings. during light cruising the INT's are right around 128 but the block learn reading seems to be a little lean (in the upper 30's). WOT is right on the money. should i continue to richen it up for part throttle or keep it where it is?
also, i don't see any tables to specify injector widths for an 89 tune so i have been bumping up the MAF tables to get it to richen up. car has responded well this way, but want to make sure i am going in the right direction.
also, i don't see any tables to specify injector widths for an 89 tune so i have been bumping up the MAF tables to get it to richen up. car has responded well this way, but want to make sure i am going in the right direction.
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Joined: Jun 2000
Posts: 7,554
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From: In reality
Car: An Ol Buick
Engine: Vsick
Transmission: Janis Tranny Yank Converter
Re: '89 6E fuel tuning question
Originally posted by scottydta
my laptop has been down so mind you i'm just using a scan tool for readings. during light cruising the INT's are right around 128 but the block learn reading seems to be a little lean (in the upper 30's). WOT is right on the money. should i continue to richen it up for part throttle or keep it where it is?
also, i don't see any tables to specify injector widths for an 89 tune so i have been bumping up the MAF tables to get it to richen up. car has responded well this way, but want to make sure i am going in the right direction.
my laptop has been down so mind you i'm just using a scan tool for readings. during light cruising the INT's are right around 128 but the block learn reading seems to be a little lean (in the upper 30's). WOT is right on the money. should i continue to richen it up for part throttle or keep it where it is?
also, i don't see any tables to specify injector widths for an 89 tune so i have been bumping up the MAF tables to get it to richen up. car has responded well this way, but want to make sure i am going in the right direction.
Glad to see your doing the cal right, and editing the MAF stuff instead of mickey mousing things....
Thread Starter
Junior Member
Joined: Dec 2001
Posts: 83
Likes: 1
From: NC
Car: 1989 Trans Am
Engine: 350 TPI
Transmission: 700R-4
guess i can't say now that you said that. definately need to get the laptop up and running again to log some data. have been pulling spark plugs occasionally and they indicate a good mixture. pump shot feels strong and it pulls whenever i need it.
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Joined: Feb 2000
Posts: 728
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From: Laval, Canada
Car: 2004 BMW 330Cic
Engine: 3.0
Transmission: 6 speed
reading spark plugs is part of it. You also need a WB oxygen sensor to get your A/F ratio, and some dyno or track testing to gauge the performance differences from leaning/richening out the mixture.
I personnally don't have a WB yet(buying one when the car comes out this spring), so I have been using the voltage output of the stock O2 sensor. I have been told that keeping above 850 mv is safely rich versus below that starts getting a lean.
Just my .02 cents.
I personnally don't have a WB yet(buying one when the car comes out this spring), so I have been using the voltage output of the stock O2 sensor. I have been told that keeping above 850 mv is safely rich versus below that starts getting a lean.
Just my .02 cents.
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