Test Results with 4th version of code using LS1-Edit
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TECH Resident
Joined: Jan 2002
Posts: 754
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From: USA
Test Results with 4th version of code using LS1-Edit To fully assure PCM parameters are fully averaged, I went on a long drive ( too bad it was lunch time traffic ) which allowed the time for the PCM to get to a valid long term average.
Traction control was turned off via the button on console.
Weather was 73 degrees, sunny, light winds.
This was using the Ca crap smoggas, 91 octane.
The objective was solely to maintain part throttle to get a good long PCM trace.
The results below excluded fuel trim cells 20, 21 and 0 MPH.
As seen what PCM response cycles was over 14,000, with very little WOT (less then 100 cycles of the 14,000)( darting inbetween traffic, to 131 MPH at 6,300 RPMs) to see what O2s reported at WOT with the LTFT close to zero.
WOT timing was about 27 degrees but went lower when pulling hard up hills.
Average injector pulse with at WOT was 13 mSecs, with a peak of 85% duty cycle.
MAF shows a bit too much air volume (peaking 10,000 Hz) causing low level knock that needs to be tweaked out.
Here is a taste of the raw PCM collected data:
This is a live sheet so sliders do work.
Ease Scanner Reporting
The little bit of misfire was only at less the 25 MPH and due to cam and long tuner headers.
Overall the powertrain is performing much better then it did with the junk powerloader so called calibrations and torque and H.P show a good gain,
high knock is gone, far less misfire, multi misfire gone, water temps staying right around 178 degrees, oil temps average 180 degrees even at sustained high RPM loads.
Now to go for flash build 5 and rid the low level knock.
At this point from using the powerloader to flash 4, HP has jumped 25 RWHP and torque has gone up 30 ft/lbs RWTQ.
[ February 22, 2002: Message edited by: Team ZR-1 ]</p>
Traction control was turned off via the button on console.
Weather was 73 degrees, sunny, light winds.
This was using the Ca crap smoggas, 91 octane.
The objective was solely to maintain part throttle to get a good long PCM trace.
The results below excluded fuel trim cells 20, 21 and 0 MPH.
As seen what PCM response cycles was over 14,000, with very little WOT (less then 100 cycles of the 14,000)( darting inbetween traffic, to 131 MPH at 6,300 RPMs) to see what O2s reported at WOT with the LTFT close to zero.
WOT timing was about 27 degrees but went lower when pulling hard up hills.
Average injector pulse with at WOT was 13 mSecs, with a peak of 85% duty cycle.
MAF shows a bit too much air volume (peaking 10,000 Hz) causing low level knock that needs to be tweaked out.
Here is a taste of the raw PCM collected data:
This is a live sheet so sliders do work.
Ease Scanner Reporting
The little bit of misfire was only at less the 25 MPH and due to cam and long tuner headers.
Overall the powertrain is performing much better then it did with the junk powerloader so called calibrations and torque and H.P show a good gain,
high knock is gone, far less misfire, multi misfire gone, water temps staying right around 178 degrees, oil temps average 180 degrees even at sustained high RPM loads.
Now to go for flash build 5 and rid the low level knock.
At this point from using the powerloader to flash 4, HP has jumped 25 RWHP and torque has gone up 30 ft/lbs RWTQ.
[ February 22, 2002: Message edited by: Team ZR-1 ]</p>
Re: Test Results with 4th version of code using LS1-Edit Way to go John! I knew that you'd have this thing figured out in short order! I should have my S/W ready to roll shortly too.
Thread Starter
TECH Resident
Joined: Jan 2002
Posts: 754
Likes: 0
From: USA
Re: Test Results with 4th version of code using LS1-Edit Hi John,
have not heard from you in awhile, drop a dime and give me a call to see where you are at with that animal your building.
This PCM tuning while its in BETA stage is clearly a learning curve, nothing out there to see or use as examples so it's needed to make few changes so you know in test results if you screwed up or not, but as a whole most of then time is learning what the tables are really doing and how other PCM functions might effect the changes you've made.
Hard part is finding a place to do the testing ( honest officer I was really not going thaaat F a s t :-)
Sunday drivers even make it harder to test the edge of a parameters ....
I'm damn close to max but am testing degree by degree how much timing this stroker can handle and be a bullet.
If I had trouble launching off the line before now it's a even better chore.
Gotta get to the track, Sears Pointis got the new drag strip done so in a few weeks will go and be the 1st to leave rubber on that new surface and see how the numbers match the real tests.
Let me know when you start hacking on your calibrations. It's like opening a gift package. after doing the testruns and then you open the scanner recording to see what will the numbers be this time..
[quote]Originally posted by John B:
<strong>Way to go John! I knew that you'd have this thing figured out in short order! I should have my S/W ready to roll shortly too.</strong><hr></blockquote>
have not heard from you in awhile, drop a dime and give me a call to see where you are at with that animal your building.
This PCM tuning while its in BETA stage is clearly a learning curve, nothing out there to see or use as examples so it's needed to make few changes so you know in test results if you screwed up or not, but as a whole most of then time is learning what the tables are really doing and how other PCM functions might effect the changes you've made.
Hard part is finding a place to do the testing ( honest officer I was really not going thaaat F a s t :-)
Sunday drivers even make it harder to test the edge of a parameters ....
I'm damn close to max but am testing degree by degree how much timing this stroker can handle and be a bullet.
If I had trouble launching off the line before now it's a even better chore.
Gotta get to the track, Sears Pointis got the new drag strip done so in a few weeks will go and be the 1st to leave rubber on that new surface and see how the numbers match the real tests.
Let me know when you start hacking on your calibrations. It's like opening a gift package. after doing the testruns and then you open the scanner recording to see what will the numbers be this time..
[quote]Originally posted by John B:
<strong>Way to go John! I knew that you'd have this thing figured out in short order! I should have my S/W ready to roll shortly too.</strong><hr></blockquote>
