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Better times but could be better

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Old Nov 5, 2006 | 05:15 PM
  #1  
Nad1370's Avatar
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Better times but could be better

1 -5 runs
60'- 1.80 / 1.80 / 1.81 / 1.95 / 1.85
330- 5.23/ 5.39 / 5.24 / 5.44 / 5.32
1/8 - 8.05/ 8.22 / 8.05 / 8.41 / 8.16
mph- 87.31/87.27/88.87/86.16/89.09
1000-10.52/10.67/10.48/10.92/10.45
1/4 - 12.56/12.71/12.51/12.98/12.42
mph - 110.15/110.61/111.51/109.39/112.32

I know I need to speed up my shifts ( all lifted ) but this is how I drive. I'll practice more on that.
Previous best:
1.77
5.16
7.97
86.23
10.40
12.43
111.55----un tuned 20g

High 60's, 1/2 hr between runs. Boost gauge was reading 20.5 during 3rd and 4th gear pulls at redline. Peak boost was set at 22 psi but never hit it during the runs.
I notice looking on my old slips that I was picking up 1-2.5 mph in the 1/8 faster on my runs today. Although I was picking up 24-25 mph in the back half before compared to just 23 mph today. Power band must have shifted after my previous tune.
Ecuflash road tune by somebody I know.

For now I'm happy with the results today compared to the last time I ran. Which I won't post because it was so dissappointing.
.
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Old Nov 5, 2006 | 05:57 PM
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From: Hayden, ID
What are your A/F ratio's during your runs? Seems like a pretty conservative tune. What 20G are you running also?
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Old Nov 5, 2006 | 06:31 PM
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Well, of course you don't see 22psi on the track, because you're never below 5500rpm. You hit your peak of 22 at 3800-4000rpm. By 5500rpm, it has already tapered to 20.5...that's very normal. It's unlikely that your powerband changed, but it's possible. It's more likely that the weather conditions were different, or you shifted at slightly different rpms. Timeslips are rarely the same from one trip to the next...
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Old Nov 5, 2006 | 07:05 PM
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Originally Posted by NIevo
What are your A/F ratio's during your runs? Seems like a pretty conservative tune. What 20G are you running also?

6 blade.
Wasn't running a wideband during the runs but it was reading 11.3-11.5 after cat after the tune.

There was no timing pulled since there was none recorded on my logger. Just a smooth ramp to redline.

Yeah Warr. I tried shifting diff. 88 and 89 mph in the 1/8 were shifted at 7600 -7700 rpm's during 3rd gear which was the best for me. Others were shifted at 7200.
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