Customer wants to use a SCT handheld after the car was tuned with HP....

[Newagehotrods]

I have a customer who has a 2012 Challenger and the car was previously tuned with HP. He has a SCT handheld that he has tunes for the car. He asked if there was a way to use it. I told him I believe he cannot use the SCT due to HP encryption. Can anyone validate this for me?

Thanks!

[06charger]

I have a customer who has a 2012 Challenger and the car was previously tuned with HP. He has a SCT handheld that he has tunes for the car. He asked if there was a way to use it. I told him I believe he cannot use the SCT due to HP encryption. Can anyone validate this for me?

Thanks!

you are right you cant, why would the want to use the sct with hp tuners that doesnt make much since. thats like watering plants with diesel.

[Newagehotrods]

you are right you cant, why would the want to use the sct with hp tuners that doesnt make much since. thats like watering plants with diesel.

HAHAHAHA thanks we all know how forums are now a days. I asked him the same thing and he felt the other guys tunes were better. This guy is new to the area and stopped by the shop asking this.

Thanks!

[mbray01]

it will simply pull the hp calibration changes, and reinstall sct. Where it gets sticky is in tables that sct may not modify, like timing modifiers. The hp tune may have all timing in main table but no modifiers, and sct uses main + stock modifiers, sct doesn't change the modifiers table so no there is little timing. This could also go backwards, and have way too much timing, and sct usually lowers max knock retard, so say everything multiplies out and you have 44* total at wot. MAx kr is set to 6, well the motor is going to get 38* timing whether it likes it or not

so stacking tunes is bad. Get it done right, and be done

[Newagehotrods]

That's exactly what I told him....some people just never get it.....

[mbray01]

The only thing I am not 100% sure on is if I pull a table and don't make changes to that table, does hp still over write that table with the same unchanged value, or does it simply skip it as it is unchanged.
I have been told both ways, and thats what worries me, tables being left untouched, or "assumed" to be left untouched

[Newagehotrods]

Yeah its hard to say to be safe. I would think they do things differently but when you pull the tune I would think it would read it.

[mbray01]

I know it reads it, I can see changes that have been made via compare, however does the sct see changes? And thats where I get worried

[06300CSRT8]

I believe you can upload a stock tune to the PCM through the SCT handheld, might need a call to SCT support to get a code to allow the end user to do so, itll force write it to a stock calibration. After that, should be able to upload any tune in the handheld and no worry about changes on top of changes.