When we talked on the phone, I let him know I wanted it to "brake torque" around 3000rpm, which he said it would. Maybe it's tough to build them to exact specs and have them come out right where the customer wants it to be.

When I asked him about what the stall would be rated at and where it would brake stall, he said around the same rpm, plus or minus 3000rpm. Needless to say I'm very disappointed and am going to have to figure out what to do. 2300 just isn't even close.

 

what i recomend is going back to the dyno. lock the converter in (using programming) at a very low speed and try to run 3rd gear at around 1500 rpm and up with the converter locked in. from there send your dyno sheet to PI and they will set you up with the ideal stall speed. knowing what flash stall and brake stall is doesn't fix your problem so i won't give you that speech either. i highly recomend just getting another dyno done at that low of rpm so they can see boost and torque levels. try to go from around 1500/1800 and up to your normal stopping rpm. do this and send the converter back. you will get the best converter back available for your truck i'd bet. PI is very good at what they do and sometimes with a turbo vehicle it's hard to tell where spool starts.

 

So when you floor it and hold the brake, it revs to 2300rpm without the truck creeping forward?

Also, are the 470/520 numbers you quoted actual dyno numbers?

 

Yeah, that's the way I understand it............ more torque=more stall unless I am wrong if i am somebody correct me. With that 470/520 I would think that you should be able to brake stall it up higher than 2300.

 

Yes and yes. My dyno at 9psi with Meth is 471hp/525awtq to be exact, and that's at a pig rich 10.8 A/F ratio. We're going to up the boost a bit and possibly the timing a bit which will (should) put me around 500awhp or more. My Tune is currently set "inbetween" my two settings of 5psi and 9psi. 5psi is a hair lean and 9psi with the Meth is obviously rich. I'm going to skip the 5psi settging and go full-tune on 9psi (or 10/11) with Meth.

When I'm stopped, foot on the brack, flooring it, the truck just sits there, creaps up to about 2300rpm and 4psi of boost. It doesn't creap forward at all; stock brakes.

Zippy - That might be what I'll have to do. I gave them ALL of the information possible hoping that would be enough. I was told it was. After spending, what, $500 to get it installed, I'm not too happy thinking about $500 to pull it, and another $500 to reinstall it. Especially considering they knew what I was looking for. If PI didn't get it correct, why should I be the one to pay for it? I'll keep you posted as to what I find out tomorrow.

 

What rpm is your torque peak at?

 

i wish you were closer. if that kind of thing happened to one of my customers i'd do the swap at no charge.

 

Here's the graph: 5psi & 9psi

Zippy - thanks, sounds like you give customer service! I'll find out tomorrow or Thursday at the latest on what I can do about this....

 

That's the tough part about a stall for a turbo setup. You make 540ft/lbs at 4200rpm, and you're probably close to stock at 2500rpm.

Did you get the turbo stator that PI offers?

 

It's the multi-disk 3-plate. He knew exactly what I had, I gave them every aspect including dyno #'s for the truck. The price was $934. I'm pretty sure that was the Turbo Stator. They wouldn't have NOT built a Turbo Stator for my setup?