X2 hit the converter a little harder, maybe around 4200, you could pick up a couple hundreds by doing this. You didn't say how much the car weighs, but last sat. with a 388" 2950lb car leaving at 3600 on the chip 5500 stall converter, we went 1.442 and there's alittle left in it, track wasn't preped very good.
JMO
Zip.