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Ve questions

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Old Mar 24, 2007 | 08:30 PM
  #1  
Blazin4x4's Avatar
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Car: 1988 Chevy silverado K5
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Ve questions

Could someone tell me what relationship the first and second ve tables have in the 7747? I have only been tuning the 1st one or main ve table... should I be playing with the 2nd one too?
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Old Mar 24, 2007 | 08:57 PM
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Re: Ve questions

Originally Posted by Blazin4x4
Could someone tell me what relationship the first and second ve tables have in the 7747? I have only been tuning the 1st one or main ve table... should I be playing with the 2nd one too?
A+B =C

or

VE1 + VE2 = Total VE
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Old Mar 24, 2007 | 10:10 PM
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Re: Ve questions

To elaborate, since the main VE table only goes to 3200 RPM or so, a second table is present to allow the VEs to be reduced at high RPMs. This prevents the engine from going rich since the engine's volumetric efficiency falls off at high RPMs. The VE at RPMs greater then 3200 RPM (or 3600, cant remember) are the last VE entry + the VE adder. Usually you wont have to play with the VE adder table during part throttle tuning unless cells in your main VE table start zeroing out.
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Old Mar 27, 2007 | 09:08 PM
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Blazin4x4's Avatar
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Car: 1988 Chevy silverado K5
Engine: 350 bored .030, crane cams hyd bluprint l-79 cam 447 lift 272 dur, camel hump heads port and polished 1.94 1.50, afterburner headers and y pipe, holley 670 cfm tbi, holley projection dual plane manifold, accel high pressure fuel pump, 3 inch exhaust
Transmission: 700 r4 with corvette servo and shift kit.
Re: Ve questions

What do you mean by zeroing out?

I am just tuning Idle right now. Still not sure I understand it though... one table goes from 0-3600 rpm and the other goes from 0-6000 or close too it. I'm confused.

I think I'm missing something with win aldl... is there a way to see ve datalogging?
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