I have been trying for a long time to break into the V10 market, and yesterday I finally got my chance. I was asked by a repeat customer of mine (I had done a M1 flash on his 99 RT) to do a dyno tune on his new 2004 SRT10 6 spd.
I do my tuning down here in Texas at a small shop called ET Motorsports, in Pasadena, TX. It's a hole in the wall, but the dyno doesn't lie. We use a Superflow Dyno, which is comparable to a Mustang dyno
The truck was mostly stock, only modification was a SCT X3 with 93 octane tune from a known calibrator in the Viper community, as well as no cats and dual Magnaflow race mufflers. This thing was LOUD at full boil, by far the loudest truck I've ever dyno'd.
We dyno'd on his existing tune. Made 428/440 officially, I was a little distracted by the exhaust noise so I accidentally ended the pull a little early.
Stock tune made 415whp.
I worked some magic, and eked out 450/475 on the first try. AFR was perfect across the board, after doing one more revision/pull to see if it needed more fuel and for consistency, we pulled it off the dyno and the customer went home. (I had already logged part throttle, etc etc). The superflow has an option to correct to Dynojet's HP/TQ calculation, and in doing so, it comes out to 475/502 when you use their formula. (I am only posting this for reference)
We were able to pick up 10-15 whp across the entire rpm range. The customer sent me a text afterwards indicating that he could feel the difference.
We will be going back to the dyno in a few more weeks with an underdrive pulley, ported intake manifold, and a CAI. Stay tuned! I am hoping for 500 whp.