LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Well I put the wideband on the car and you AINT gonna believe THIS!

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Old 09-21-2009, 06:44 PM
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Default Well I put the wideband on the car and you AINT gonna believe THIS!

She kinda fat, It stays at 11.3-11.4 until the shift and then will lean out to 12.1 for a second then back to 11.3.

I knew it was rich, but not THAT rich.

I gotta get Tunercats and get some mo POWA!
Old 09-21-2009, 06:46 PM
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you sure you weren't looking at the g-tech?
Old 09-21-2009, 06:53 PM
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Originally Posted by myltwon
you sure you weren't looking at the g-tech?
LMAO, G tech
Old 09-21-2009, 07:00 PM
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I kid I kid. glad you found more power in the setup!
Old 09-21-2009, 07:05 PM
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This is an awesome story, David.
Old 09-21-2009, 07:10 PM
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You have to have it all the way to the floor when you do air fuel testing on these cars or the fuel pressure regulator will mess with you big time and show very rich.

When you get ready to start tuning on it if you need help feel free to pm me, and i'll help you get it in shape. I'll have to have a copy of your tune first to figure out exactly why its so rich. I can also show you how to log the wideband through datamaster if you don't know that trick, its worth doing and will save you a bunch of brain damage.
Old 09-21-2009, 07:13 PM
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Originally Posted by ws6t3rror
You have to have it all the way to the floor when you do air fuel testing on these cars or the fuel pressure regulator will mess with you big time and show very rich.

When you get ready to start tuning on it if you need help feel free to pm me, and i'll help you get it in shape. I'll have to have a copy of your tune first to figure out exactly why its so rich. I can also show you how to log the wideband through datamaster if you don't know that trick, its worth doing and will save you a bunch of brain damage.

Thanks a bunch, I calibrated the sensor per the instructions.


And it was WOT,1st gear roll 1/2 way through high gear. 2 times it read the same thing.

I will make sure I calibrated it right. Dont want to make a screw up like that.
Old 09-21-2009, 07:20 PM
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Be carefull about leaning it out too much in first and second. I would start by working on the tune in third.
Old 09-21-2009, 07:39 PM
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Originally Posted by speed density
this is an awesome story, david.
Old 09-21-2009, 07:52 PM
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Originally Posted by RamAir95TA
I missed the boat on that one


Gizmo I understand, and will do just that per your instructions. I am a tuning newbie and it will be EASY to make a fatal mistake on this engine as it is 12.5 to 1 on pumpgas, dynamic is 8.8 I think it was.


I went out and re calibrated the sensor again and made two more runs, same thing, but now the lowest was 11.6. Cruise is nice and lean at 15 ish.
Old 09-21-2009, 08:14 PM
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Holy ****!!! Who tuned it before that it was that rich?
Old 09-21-2009, 08:18 PM
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Originally Posted by k0261886
Holy ****!!! Who tuned it before that it was that rich?
Well in Ed Wrights defense the car had some issues when he tuned it And I have since been farting with it. So its not Ed's fault at all. I am sure he will help me get it ironed out.

Anyone know how much power is to be had here?
Old 09-21-2009, 08:32 PM
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I would think a noticeable amount, to be had. What are you shooting for, 13.0-13.1?
Old 09-21-2009, 08:43 PM
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Originally Posted by FASTFATBOY
Anyone know how much power is to be had here?
Add a dry kit, that ought to level it out
Old 09-21-2009, 08:44 PM
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i made the most power at 12.8-12.9 on 100 octane, keep it safe running pump gas in that motor.
Old 09-21-2009, 09:02 PM
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Originally Posted by FASTFATBOY
Well in Ed Wrights defense the car had some issues when he tuned it And I have since been farting with it. So its not Ed's fault at all. I am sure he will help me get it ironed out.

Anyone know how much power is to be had here?
very little, maybe 10 at the most, and probly slow it down at the track

AF ratio is not an exact science and there is no one number that will work for every engine.




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