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Next step after High VE table numbers

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Old Jun 9, 2017 | 11:06 AM
  #1  
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From: Romeoville ,Il.
Car: 1990 RS/SS modified
Engine: 355ci, 113 heads, LT4 hotcam
Transmission: T5
Axle/Gears: 3.73 Eaton posi
Next step after High VE table numbers

I just want to confirm that after my VE table number get really close to 100 that the next step is to reduce the size of the injectors in the .bin file as to increase the firing speed/frequency. To do this correctly I need to change:

BPC - BPC vs VAC
DGD - Injector Flow Scalar

And for gas mileage to be correct
INJ - MPG Injector Flow Constant

Is this correct?

My other alternative is increasing the Fuel pressure but that alternative slows down the valves, and seeing that they are the 80# that are slower to begin with, I would rather not do that.
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Old Jun 9, 2017 | 12:03 PM
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Next step after High VE table numbers

Since you aren't changing the actual flow rate the "DGD - Injector Flow Scalar" and "INJ - MPG Injector Flow Constant" don't require any changes. The "DGD -" entry is for digital dash cars, so it won't affect anything in your '90.

As for the VE, reduce it by 15% and increase the "BPC - BPC vs VAC" table by 15%. Done.

Be sure to keep an eye on the maximum injector duty cycle.

RBob.
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Old Jun 9, 2017 | 03:54 PM
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Re: Next step after High VE table numbers

I'd recommend also keeping an eye on actual AFR with a wide band. Reducing the injector constant will scale the PE down as well.
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