OK PCM Programmers >>> "Tune My Stuff" Challenge!
Thread Starter
Joined: Nov 2001
Posts: 10,060
Likes: 33
From: Canton, GA
OK PCM Programmers >>> "Tune My Stuff" Challenge! Here are my Autotap results:
Average Ltrims (cruising) 11.4180257 11.59928469
WOT (didn't make it to redline 7000)
Tmg``O2`B1``O2`B2`KR`RPM``Ltrim``Ltrim
29```0.4````0.695`0``5529``6.2```7
32```0.91```0.945`0``6375``1.6```2.3
32```0.905``0.935`0``5652``1.6```10.2
32```0.92```0.955`0``5188``14.1``10.2
32```0.935``0.945`0``5435``14.1``10.2
32```0.935``0.955`0``5762``8.6```3.9
31.5`0.925``0.945`0``6036``14.1``10.2
32```0.935``0.945`0``6305``14.1``10.2
32```0.93```0.955`0``5052``14.1``10.2
32```0.935``0.955`0``4995``14.1``10.2
32```0.935``0.96``0``5072``14.1``10.2
32```0.935``0.955`0``5188``14.1``10.2
32```0.925``0.95``0``5315``14.1``10.2
TPS%``Strim``Strim``MAF Flow
39.6````0``````0`````41.56
76.5````0``````0`````43.94
79.6````0``````0`````38.29
72.2````0``````0`````36.62
98.8````0``````0`````38.87
99.2````0``````0`````36.6
98.8````0``````0`````42.73
99.2````0``````0`````37.37
98.8````0``````0`````35.14
98.8````0``````0`````34.71
98.8````0``````0`````36.83
98.8````0``````0`````33.71
98.8````0``````0`````36.19
My mods are:
352 cid (12cc dished pistons, .050 milled heads, 3.91 bore)
Cam > 221/227 .561/.569 114 SLA
SLP 85mm MAF
Long Tubes (no CATs and 2.5" true duals)
Looks like I need to tweak the MAF settings down to get LTRims near zero, then play with PE vs. RPM to bring the O2s to .900 or so, and then let loose on the timing tables to maximize HP and torque.
INPUTS are always welcome! <img border="0" alt="[hail]" title="" src="graemlins/gr_hail.gif" />
<small>[ March 19, 2002, 09:40 PM: Message edited by: Reckless ]</small>
Average Ltrims (cruising) 11.4180257 11.59928469
WOT (didn't make it to redline 7000)
Tmg``O2`B1``O2`B2`KR`RPM``Ltrim``Ltrim
29```0.4````0.695`0``5529``6.2```7
32```0.91```0.945`0``6375``1.6```2.3
32```0.905``0.935`0``5652``1.6```10.2
32```0.92```0.955`0``5188``14.1``10.2
32```0.935``0.945`0``5435``14.1``10.2
32```0.935``0.955`0``5762``8.6```3.9
31.5`0.925``0.945`0``6036``14.1``10.2
32```0.935``0.945`0``6305``14.1``10.2
32```0.93```0.955`0``5052``14.1``10.2
32```0.935``0.955`0``4995``14.1``10.2
32```0.935``0.96``0``5072``14.1``10.2
32```0.935``0.955`0``5188``14.1``10.2
32```0.925``0.95``0``5315``14.1``10.2
TPS%``Strim``Strim``MAF Flow
39.6````0``````0`````41.56
76.5````0``````0`````43.94
79.6````0``````0`````38.29
72.2````0``````0`````36.62
98.8````0``````0`````38.87
99.2````0``````0`````36.6
98.8````0``````0`````42.73
99.2````0``````0`````37.37
98.8````0``````0`````35.14
98.8````0``````0`````34.71
98.8````0``````0`````36.83
98.8````0``````0`````33.71
98.8````0``````0`````36.19
My mods are:
352 cid (12cc dished pistons, .050 milled heads, 3.91 bore)
Cam > 221/227 .561/.569 114 SLA
SLP 85mm MAF
Long Tubes (no CATs and 2.5" true duals)
Looks like I need to tweak the MAF settings down to get LTRims near zero, then play with PE vs. RPM to bring the O2s to .900 or so, and then let loose on the timing tables to maximize HP and torque.
INPUTS are always welcome! <img border="0" alt="[hail]" title="" src="graemlins/gr_hail.gif" />
<small>[ March 19, 2002, 09:40 PM: Message edited by: Reckless ]</small>
Re: OK PCM Programmers >>> "Tune My Stuff" Challenge! Here is one input:
Please don't try to tune your car by the O2 sensors. They are simply not accuate for adjusting WOT AFR. You must use a wideband O2 for WOT. As far as the part throttle work on gettting the LTrims in line without looking at the O2 output. get those Ltrims around -2ish. part throttle, THEN got to the dyno and get the AFR to 13:1 at WOT.
Just my $.02
Ryan K. <img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" />
Please don't try to tune your car by the O2 sensors. They are simply not accuate for adjusting WOT AFR. You must use a wideband O2 for WOT. As far as the part throttle work on gettting the LTrims in line without looking at the O2 output. get those Ltrims around -2ish. part throttle, THEN got to the dyno and get the AFR to 13:1 at WOT.
Just my $.02
Ryan K. <img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" />
Thread Starter
Joined: Nov 2001
Posts: 10,060
Likes: 33
From: Canton, GA
Re: OK PCM Programmers >>> "Tune My Stuff" Challenge! Ryan,
So what is the alternative to a wideband? Using the O2 sensors right? You can't assume everyone has access to a wideband.
Todd
So what is the alternative to a wideband? Using the O2 sensors right? You can't assume everyone has access to a wideband.
Todd
Teching In
Joined: Dec 2001
Posts: 42
Likes: 0
From: Honolulu, Hawaii
Re: OK PCM Programmers >>> "Tune My Stuff" Challenge! You do have access to a wideband here on Oahu. There is a guy in Kailua that has the wideband system for the Dynojet, and it will graph your air/fuel ratio across the rpm range right on the dyno sheet. That is the best way to tune WOT that I have seen yet. I've seem more that a couple of people pop their engines from trying to tune a/f with stock O2 sensors. My LS1-Edit should be here next week, and I'm not chancing my motor to stock O2 sensors for WOT tuning. Never have and never will.
His prices are damn cheap too, but one catch...
Him and Bode don't get along and based on that, you might not want to deal with him. With the release of LS1-Edit, Bode really should pony up the $2,400.00 for the system and get it for his dyno. It'll be the best $2,400.00 he's spent yet, period.
His prices are damn cheap too, but one catch...
Him and Bode don't get along and based on that, you might not want to deal with him. With the release of LS1-Edit, Bode really should pony up the $2,400.00 for the system and get it for his dyno. It'll be the best $2,400.00 he's spent yet, period.
Thread Starter
Joined: Nov 2001
Posts: 10,060
Likes: 33
From: Canton, GA
Re: OK PCM Programmers >>> "Tune My Stuff" Challenge! I agree Robert. Can't argue for what I pay at Bode's shop though. Besides I'd have to listen to Steven talk **** all day <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Maybe I can try to do the basic tuning, and then go to Steven for the sniffer. Why don't you hook me up brah? I'll buy you beer! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Todd
Maybe I can try to do the basic tuning, and then go to Steven for the sniffer. Why don't you hook me up brah? I'll buy you beer! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Todd
