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Need help with $749 tuning on twin turbo...

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Old Aug 5, 2004 | 01:51 PM
  #1  
Balael6's Avatar
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From: SE Michigan
Car: 1988 Formula
Engine: Twin Turbo .60/.63 305
Transmission: T-5 5 speed
Need help with $749 tuning on twin turbo...

The $58 code is running extremely rich, even when idling, i've set the bpc for .056 across the board, i have ford 42 lb/hr injectors which i rounded off to 46 for gms fuel pressure. What should be the next thing i'm looking for here?

pj
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Old Aug 5, 2004 | 03:23 PM
  #2  
Grumpy's Avatar
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From: In reality
Car: An Ol Buick
Engine: Vsick
Transmission: Janis Tranny Yank Converter
Re: Need help with $749 tuning on twin turbo...

Originally posted by Balael6
The $58 code is running extremely rich, even when idling, i've set the bpc for .056 across the board, i have ford 42 lb/hr injectors which i rounded off to 46 for gms fuel pressure. What should be the next thing i'm looking for here?
Do all the scanner readings look reasonable?.
FP set correctly?.
Timing correct?.

If so,

Is the warm engine idle rich?.
Then you'll want to lower the VE table entries in the isle area of the VE table.

You'll need to see what K/Pa you're idling at from the scanner info to see where to adjust the table. ie, if you idling at ~50 K/Pa you'll want to lean out the 40-60 area intially, and then as you get closer and closer refine the areas you want to adjust.
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Old Aug 5, 2004 | 07:12 PM
  #3  
Balael6's Avatar
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Joined: Jan 2002
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From: SE Michigan
Car: 1988 Formula
Engine: Twin Turbo .60/.63 305
Transmission: T-5 5 speed
My car didn't throw a code during the first drive, and now the check engine light is on. I tried jumping pins a and b on the top right corner of the aldl connection, and no flashing lights showed up when i turn the key to the on position, just wondering if i have to jumper two different wires with the 749? or not?

pj

edit:

just curious, would trying to pull the codes on my car, which has a kill switch installed, would that kill switch cause problems? The car cannot be turned over until the kill switch is flipped, and i'm just really not sure why i cannot get the paper clip trick to work. Almost got this car on the road, just cannot figure this stupid thing out.

thanks

Last edited by Balael6; Aug 5, 2004 at 08:18 PM.
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