I had this mod done to my previous car, 2000 Contour SVT, and had to get MIL eliminators from Dallas Mustang. I did notice that the R's got up alot quicker and my dyno runs went like this...

-20K w/ gutted precats, true duals, 2 1/4" pipe and Magnaflow resonators and SS race mufflers w/ drop in K&N netted only 159 hp on the dyno.

-32K same above mods and I pulled 167 hp (almost one year to the date, different place for the dyno (same brand) and the weather was almost exactly the same.

-Spring 04' 50K same above mods except I installed a 9" K&N and we used a Mustang Dyno instead of the DynoJet and I pulled 171 hp. The Mustang dyno measures the hp differently and the guy there told us there's about a 10-15% difference between there's and the DynoJet and he said you can take the low amount (10%) and add it to the total. If thats true, I pulled 191 hp out of my 2.5L DOHC V6 w/50K on the clock. The IUM/LIM weren't cleaned and I was runnin' my stock plugs. The kid who bought my car had them cleaned and new plugs/wires added to the car. He dyno'd the car and it put down 186 hp. Speaking of dyno's, is there anywhere we can take the Crossfire to have it dyno'd w/o messing some thing up?