not as much power gain as i expected.. any advice or input on the tune?

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05-29-2020
Blue95sil

1 Attachment(s)

not as much power gain as i expected.. any advice or input on the tune?

alright guys this thing has been a little work in the making for a friend, but we got long tube headers, no cats, edelbrock supercharger with stock setup for supercharger, a Circle D converter 3,000-3,200. she runs good and shifts solid but sometimes in lockup the converter will shimmy. but the dyno numbers were a little low for what we estimated. any thoughts or advice would be greatly appreciated. Attachment 99921 Attachment 99921
05-30-2020
GMCfast

It would help to know what kind of power it made
05-30-2020
SultanHassanMasTuning

i think you meant to post tune and log you posted the tune twice
05-30-2020
Blue95sil

Quote:

Originally Posted by GMCfast

It would help to know what kind of power it made

sorry man it was a late one yesterday.. but it only made 420HP to the wheels.
05-30-2020
Blue95sil

yes i actually meant to post tune and log. sorry it was a late one yesterday
05-31-2020
SultanHassanMasTuning

still no log :confused:
06-01-2020
Blue95sil

Quote:

Originally Posted by SultanHassanMasTuning

still no log :confused:

sorry man ive been slammed with work. getting the truck on the dyno to get a new log. ill post it tomorrow
06-02-2020
eficalibrator

Quote:

Originally Posted by Blue95sil

alright guys this thing has been a little work in the making for a friend, but we got long tube headers, no cats, edelbrock supercharger with stock setup for supercharger, a Circle D converter 3,000-3,200.

Why such a loose convertor on modern close-ratio transmission with a positive displacement supercharger that makes good boost at low RPM? Not only is it probably hurting your power, the transition to lockup is not going to be like the factory convertor and the TCM is probably having fits with that mismatch as it tries to coordinate torques. Speaking of torques, how precise is your virtual torque model? This is probably also contributing to your "shimmy".
06-02-2020
Blue95sil

2 Attachment(s)

finally got the log...Attachment 100050
06-02-2020
Blue95sil

Quote:

Originally Posted by eficalibrator

Why such a loose convertor on modern close-ratio transmission with a positive displacement supercharger that makes good boost at low RPM? Not only is it probably hurting your power, the transition to lockup is not going to be like the factory convertor and the TCM is probably having fits with that mismatch as it tries to coordinate torques. Speaking of torques, how precise is your virtual torque model? This is probably also contributing to your "shimmy".

we went with this converter since it has aftermarket rims, larger tires and weight of the truck. i also forgot to mention it has a texas speed stage 1 cam with the AFM/DOD delete kit.
06-02-2020
Blue95sil

2 Attachment(s)

Quote:

Originally Posted by SultanHassanMasTuning

i think you meant to post tune and log you posted the tune twice

Attachment 100051 Attachment 100052
06-02-2020
SultanHassanMasTuning

your at the very edge of your fuel system

and your log is missing alot of needed pids
06-10-2020
Frost

It's that combination that KEEPS COMING UP THESE DAYS.... Circle D and TCM OS 24270599 (among others) See this thread: https://forum.hptuners.com/showthrea...-lockup-issues And also this thread: https://forum.hptuners.com/showthrea...RCLE-D-3000-HP This OS will refuse what you ask it to do in the cal on lockup. The scan tool will make it lockup tight and hold.... but not the cal data.