Terrible sputter/miss after 3000 rpm, HELP!!!

[THE COOP]

OK I've got a 2017 ST with 144,000 miles and I've been running a Dizzy tune for over 3 years and 100,000 miles, it started having a miss during full throttle pull's over 3000 rpm's and it's getting worse so I did a little reading and put 4 new NGK coil packs on yesterday hoping it was a bad coil but that didn't help? The motor was replaced under warranty at 52,000 miles and it's ran flawless ever since. I'm hoping its not the turbo going out but not sure? Is there a way I can do some data logging to determan whats going on? Thanks in advance. COOP

 

[slopoke]

You changed coil packs, but did you change the plugs as well? I would have started with the plugs first.

 

[THE COOP]

I have a set ordered and arriving Monday, I did pull all the plugs and inspect them when I was putting new coil packs on and they looked good but maybe I'll get lucky with a bad plug. I HOPE!!

 

[slopoke]

I hope the plugs fix your issue. How many miles on the plugs that are in there and what plugs are in there? In the future, start out with the cheapest first step and go from there. Keeping my fingers crossed for you.

 

[THE COOP]

I have the NGK 1 step colder and the pre-gapped for my Dizzy tune, They might have 70,000 miles on them so hoping it's a plug and not the turbo, even though I've been looking for a good reason to go to a Hybrid turbo!!!

 

[slopoke]

 

[THE COOP]

Thanks for the help and I'm an NRA member also.

 

[HAHAFiST]

Any updates here?