No Stall?

I use Turbo Action and have also used Dynamic. Bolth are great as is ATI and PTC. You might also want to email Chris at ART, he can set you up with a good converter.

Also if you still have the LD340 intake swap it back on. Its a much better intake. If your using 340/360 heads the Performer has small 318 ports so your loosing flow big time.