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$58 WOT tunning observation

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Old Jul 21, 2004 | 10:17 AM
  #1  
Tony89GTA's Avatar
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From: Prince George, BC, Canada
Car: 89 GTA
Engine: 5.7L Supercharged
Transmission: T-56
Axle/Gears: Moser 9" 3.70
$58 WOT tunning observation

I was tuning my WOT the last couple days and I was working with the BPW Boost Multiplier Vs MAP in tunner cat and I noticed for every 1 point I dropped the multiplier it would increase my AFR exactly 0.1 on the WB after I stopped pegging the WB. Have any of you guys had simmilar results? Just remember this is for a supercharger car with 42Ibs injectors and Base Pulse Constant Vs Desired %EGR set a 0.71, if that makes a difference.

This is what I started with in that table and with the 42Ibs injectors, I couldn't even rev past 5300 because it was throwing so much fuel in, 95% DC with 42Ibs

MAP Multiplier
90 1.00
100 1.00
110 1.00
120 1.00
130 1.00
140 1.05
150 1.09
160 1.13
170 1.15
180 1.17
190 1.17

After a lot of time spent lowering the tables slowly I now have a steddy 11.5 AFR, here's how it looks after.

MAP Multiplier AFR
90 1.00
100 1.00
110 1.06 12.2
120 1.08 11.7
130 1.05 11.6
140 1.02 11.5
150 0.94 11.5
160 0.88 11.5
170 0.82 11.5
180 0.80 11.5
190 0.77

Now I don't know if this is the best way of doing things or even the best AFR for the engine but it's a start.
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Old Jul 22, 2004 | 10:54 AM
  #2  
Grumpy's Avatar
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Joined: Jun 2000
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From: In reality
Car: An Ol Buick
Engine: Vsick
Transmission: Janis Tranny Yank Converter
Re: $58 WOT tunning observation

Originally posted by Tony89GTA
I was tuning my WOT the last couple days and I was working with the BPW Boost Multiplier Vs MAP in tunner cat and I noticed for every 1 point I dropped the multiplier it would increase my AFR exactly 0.1 on the WB after I stopped pegging the WB. Have any of you guys had simmilar results? Just remember this is for a supercharger car with 42Ibs injectors and Base Pulse Constant Vs Desired %EGR set a 0.71, if that makes a difference.

This is what I started with in that table and with the 42Ibs injectors, I couldn't even rev past 5300 because it was throwing so much fuel in, 95% DC with 42Ibs

MAP Multiplier
90 1.00
100 1.00
110 1.00
120 1.00
130 1.00
140 1.05
150 1.09
160 1.13
170 1.15
180 1.17
190 1.17

After a lot of time spent lowering the tables slowly I now have a steddy 11.5 AFR, here's how it looks after.

MAP Multiplier AFR
90 1.00
100 1.00
110 1.06 12.2
120 1.08 11.7
130 1.05 11.6
140 1.02 11.5
150 0.94 11.5
160 0.88 11.5
170 0.82 11.5
180 0.80 11.5
190 0.77

Now I don't know if this is the best way of doing things or even the best AFR for the engine but it's a start.
If you want 11.5s and that's what generates 11.5s, then that's what works. Now, how happy is the engine?
Reply
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