I'M An Idiot!!! This a 2002 Z06 with LS6 engine!!!

Before LS1Edit - 12.48
changed IAT table, Fans, Timing, Rev Limiter.
After LS1Edit - 12.27

0.2 seconds = about 20rwhp.

Using the "McRat Quotient" of $40/hp for NA LS1/LS6 modifications, LS1 Edit costs $27.50/HP (or equivalent).

I give the LS1Edit a "Two Pistons Up" for value for your mod dollar.

I may be able to pull some more outta it, so $27.50 might be much lower.

Your results may vary, not available in Guam or Turkey, see my lawyer for details...

<small>[ August 19, 2002, 03:17 PM: Message edited by: McRat ]</small>

 

I use the HPP3 timing on mine and set the IAT tables to 0. What did you do?

 

I moved the limiter to 6900 (6600 stock)
I zero'd the IAT table
I increased the WOT timing table from .52-1.2, 4000 rpm and up to 26 degrees (22 stock)
Reduced fan temp to 194-185/184-175.

 

I assume you are zeroing the IAT - MAP Timing Adjustment table. Has ATAP shown that your IAT's get high enough to be effected?

 

I'm zeroing out the IAT Retard table. Yes it was pulling 7 deg of timing.

Keep in mind you can do the same thing with a "timing tricker" which is a 50 cent resistor.

<small>[ August 19, 2002, 11:41 AM: Message edited by: McRat ]</small>

 

Here's data from slips and AutoTap instead of memory. The only change to the car was programming. ET's are best passes.

Carlsbad 200', ~80 deg, tailwind=5mph
60'-1.846
1/8-8.075@87.55
1/4-12.482@110.55

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">sec RPM MPH ADV IAT TP O2 H20 KR
0.48 4108 0 40 145 21 0.45 221 0
1.14 4415 14 16 147 100 0.94 221 0
1.80 3539 25 19 147 100 0.95 221 0
2.40 3068 24 21 145 100 0.94 221 0
3.12 4316 32 15 145 100 0.95 223 0
3.83 5551 42 15 144 100 0.94 223 0
4.54 6637 46 15 142 100 0.95 223 0
5.26 5189 56 15 138 100 0.94 225 0
5.97 5794 62 16 133 100 0.94 225 0
6.69 6353 68 17 129 100 0.45 225 0
7.35 5605 72 16 126 100 0.94 225 0
8.06 4941 76 17 124 100 0.94 225 0
8.72 5231 81 17 122 100 0.94 226 0
9.54 5555 86 17 118 100 0.94 226 0
10.20 5825 89 18 118 100 0.93 226 0
10.92 6070 93 19 115 100 0.94 226 0
11.63 6295 97 19 115 100 0.94 228 0
12.29 6496 100 19 111 7 0.45 228 0
13.00 4749 102 19 111 100 0.93 228 0
13.83 4819 106 19 111 100 0.93 230 0
14.54 4922 108 19 109 100 0.93 230 0
</pre><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Fontana, 1100ft, 80deg,headwind=10mph
60'-1.766
1/8-7.879@89.45
1/4-12.272@110.04
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">sec RPM MPH ADV IAT TP O2 H20 KR
0.34 4323 0 38 136 26 0.48 187 0
0.89 4961 6 26 136 100 0.93 187 0
1.39 4300 31 26 136 100 0.93 187 0
1.94 3411 23 28 136 100 0.92 187 0
2.49 3820 29 26 136 100 0.93 187 0
3.04 4858 37 26 136 100 0.94 187 0
3.53 5788 43 26 133 100 0.93 187 0
4.08 6573 48 34 133 10 0.47 187 0
4.68 5029 54 26 131 100 0.93 187 0
5.23 5596 60 26 129 100 0.93 187 0
5.78 6058 65 26 127 100 0.93 187 0
6.39 6496 69 26 126 100 0.92 187 0
6.94 6745 70 40 124 98 0.93 187 0
7.43 4895 76 26 122 100 0.93 187 0
7.98 5141 80 26 120 100 0.93 187 0
8.47 5373 83 26 118 100 0.93 187 0
9.08 5581 86 26 117 100 0.93 187 0
9.63 5788 89 26 115 100 0.93 187 0
10.12 5983 92 26 115 100 0.93 187 0
10.67 6150 95 26 113 100 0.93 189 0
11.17 6329 98 26 111 100 0.93 189 0
11.71 6491 100 26 111 100 0.92 189 0
12.21 6631 102 26 111 100 0.93 189 0
12.70 6562 104 19 109 100 0.92 190 0
13.25 4779 105 26 109 100 0.92 190 0
13.80 4890 107 26 109 100 0.92 190 0
14.35 4984 109 26 108 100 0.91 190 0</pre><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">

 

Hmmm...i'll have to look at my IATs. On my table, I only loose a max of 3 degrees starting a 50 degrees centigrade.

 

OPPPSSS!!!

This is a Z06 (LS6) Engine. I forgot to turn on my sig!!!

 

Hey Pat,

did you change it w/ the edit in between runs? or before you got there?

the timing increase on the 2nd run is higher but isnt alot of that due to your engine being ALOT cooler on that pass also?

 

You should be ableto squeeze a bit more out of it just by leaning out those O2s. It looks to be a bit on the fat side to me. My LS1 really responds to a leaner diet. (PE vs HP).

<img border="0" alt="[guns]" title="" src="graemlins/gr_guns.gif" /> Tm

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by WicketMike:
<strong>Hey Pat,

did you change it w/ the edit in between runs? or before you got there?

the timing increase on the 2nd run is higher but isnt alot of that due to your engine being ALOT cooler on that pass also?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I changed the programming Friday night, and did not change it again yet.

What pulls timing in the heat is the Intake Temp Sensor (IAT). Water temp doesn't matter. On Z06's the IAT is REAL close to the radiator so it gives a false high reading.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by TXCAMSS:
<strong>You should be ableto squeeze a bit more out of it just by leaning out those O2s. It looks to be a bit on the fat side to me. My LS1 really responds to a leaner diet. (PE vs HP).

<img border="0" alt="[guns]" title="" src="graemlins/gr_guns.gif" /> Tm</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks! Yeah, I think I'll reduce the fuel by 2-3% in the power enrichment table.

 

What happened to your trap speed on the 12.27 run? At the 1/8 mile you were 2 mph higher but by the 1/4 you were .5 mph lower?!?

Derrick

 

I think my dice were out of rotation...

Errr...

Or it was the head wind. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />