Crunkmaro
April 18th, 2011, 05:43 AM
I didn't put up much of a fight though.
I used to use HPT to tune my 01 v6 fbody and it was okay for what it was but now i have bigger and better things.
I put a ls1 in a 94 trans am...i am using a 99 motor, 01 heads, 98 pcm and harness. I accidentely put in the wrong converter. so now it has a 3600 converter in it. I didn't tune it the first time, friend of a friend did and it has issues locking up as well as surging at idle when hot.
I believe the surging problem is due to the idle speed being too low for the converter (3600) and gear (2.73) combination so i went in and upped the desired idle by 100rpm to match the P/N ac on/off tables (surging does not occur in those gears). I will see over the week if that 'cured' the symptom.
The bigger problem is the TCC lock-up. I am at wits end as to what affects what. I know the previous tuner (via hpt) turned off the MISFIRE detections (converter would come unlocked on bumps) as i believe i have a gremlin inside 1 of the ignition connectors. the problem seems to be slightly less annoying.
I was searching around on the forums and saw someone mentioning PWM deactivation as well as something about maxing out a feature that normally is based upon percentage to on/off. I also read somewhere about the smaller size of the converter leading to less application percentage (60% on a stock verter, 40% on a 9.5" converter for arguments sake).
I apologize if i made this thread in haste...the search function DID yield me some excellent information but i am not quite sure as to the utilization of that information via EFIlive...
Once again, if this was covered in a tutorial or something, I am sorry as I did not see it...but i would appreciate any and all help.
ps: attached my current .tun file. The tach signal might look goofy but it is because i am using a lt1 cluster and had to tweak that in order for the cluster to work!
PPS: Cliffs notes:
3600 converter
2.73 gears
headers/ypipe/exhaust
1) has issues staying locked up/unlocked while cruising (hunts)
2) has intermittent issue with surge control while engine hot in D/R.
Thanks in advance...
Crunk
10452
I used to use HPT to tune my 01 v6 fbody and it was okay for what it was but now i have bigger and better things.
I put a ls1 in a 94 trans am...i am using a 99 motor, 01 heads, 98 pcm and harness. I accidentely put in the wrong converter. so now it has a 3600 converter in it. I didn't tune it the first time, friend of a friend did and it has issues locking up as well as surging at idle when hot.
I believe the surging problem is due to the idle speed being too low for the converter (3600) and gear (2.73) combination so i went in and upped the desired idle by 100rpm to match the P/N ac on/off tables (surging does not occur in those gears). I will see over the week if that 'cured' the symptom.
The bigger problem is the TCC lock-up. I am at wits end as to what affects what. I know the previous tuner (via hpt) turned off the MISFIRE detections (converter would come unlocked on bumps) as i believe i have a gremlin inside 1 of the ignition connectors. the problem seems to be slightly less annoying.
I was searching around on the forums and saw someone mentioning PWM deactivation as well as something about maxing out a feature that normally is based upon percentage to on/off. I also read somewhere about the smaller size of the converter leading to less application percentage (60% on a stock verter, 40% on a 9.5" converter for arguments sake).
I apologize if i made this thread in haste...the search function DID yield me some excellent information but i am not quite sure as to the utilization of that information via EFIlive...
Once again, if this was covered in a tutorial or something, I am sorry as I did not see it...but i would appreciate any and all help.
ps: attached my current .tun file. The tach signal might look goofy but it is because i am using a lt1 cluster and had to tweak that in order for the cluster to work!
PPS: Cliffs notes:
3600 converter
2.73 gears
headers/ypipe/exhaust
1) has issues staying locked up/unlocked while cruising (hunts)
2) has intermittent issue with surge control while engine hot in D/R.
Thanks in advance...
Crunk
10452