Tough to say, could be a trans issue...

Who's tunes are you using?

How many miles on that trans?

Can you describe what is happening in a little more detail maybe?

Also just realized you're in Fultonville. I'm from Amsterdam originally, still around there quite a bit on the weekends (Broadalbin area usually)

 

The trans is brand new jasper three weeks ago and it stutters whether operating via tune or not.note

 

Well I have not heard one good thing about Jasper trans.

Tune or not tells us it's not tuning, it's a hard part, especially if there are no codes, means the electronics are probably working fine.

Again, who's tunes are you using anyways? Or are you using canned tunes? Canned SCT tunes still are not much better than a non SCT tuner. Custom tunes are really what's needed.

 

Yea just using the preprogrammed sct livewire tunes.

 

could very well be the issue, if something's not right with the tune for those parameters in higher rpm range, everything's probably getting all discombobulated and a stutter is a result. i'd still like to see what your high pressure oil is at though

 

How would I check high pressure oil with a mechanical gauge?

 

im not exactly where you could put your guage at on a 6.0, maybe Mdub can provide a better answer for that.

honestly, it would be a lot easier using a scan tool. i understand what your scanner is showing is only as good as your ICP sensor, but its a better way to test under driving conditions. but if you know your ICP sensor is good, then you should have faith in your readings.

you should see anywhere from 450psi at idle to 4000psi max pressure.

 

You can buy an HPOP guage, but they're not very cheap.

It would have to go on the test port on the HPOP cover down under the turbo. A scanner would be much easier.