Thanks again for the feedback everyone. I'm going to try a few things over the summer. I will report back with results so that the solution is archived here.
You may have some luck working on the tune first. If its not locking up until 4800-5200 it is doing what its being commanded to.
Even if the stock converter cannot fully lock under the power, there is still something left on the table by leaving it unlocked.
I'll use my car as an example. Its an 06 GT with nitrous (125shot).
2800rpm Restalled stock core converter with a bad tune made 272 motor/382 nitrous. So, 110hp on about a 10% slip on nitrous. Car went 11.80 @ 115.4 with a lock-up tune on nitrous.
4000rpm Larger surface area single disc converter on a much better tune made 300 motor/390 nitrous. Same shot, converter is eating it up. Converter can handle the power, but wasn't designed for full throttle lock-up on nitrous (I find out after the fact). Car went 11.70 @ 115.4 with a non-lock up tune.
A good friend has had very good luck with his PI triple disc in a similar nitrous/car setup. In comparing his datalogs, his car shows 0-1% across 3rd and 4th (as commanded) and, suprise suprise, it has about 7mph on me on average.
Now I get to put a third converter, lol. Learn from my mistake, buy a triple disc designed for full-throttle lock-up in the first place if you decide to go that route.
MY Steeda's now are bitch heavy too..
