lbstone
Viper Owner
I'll first give a little history of my Viper since I dont post much. I purchased the car last year and withing a few months had some Belanger headers, high flow cats and cat back exhaust installed with some 3.73's. I was very happy with the car buit decided to get her tuned. Before the Viper, I owned a SRT-10 Ram and had a B and G computer installed which I though woke the car up quite a bit. So after doing a little research, I decided to get a SCT tuner and have a local shop custom tune the Viper. All said and done, before the tune with the exhaust setup I ran a max hp of 449.5 hp at 5650 - 5700 RPM and 444.9 tq at 4750 RPM. After the tune the car made 459.5 hp at 5650 RPM and max tq of 469.5 at 4250 RPM. I was surprised that we didn't make more but all in all we kept the a/f above 11 after the tune but is mostly in the 12's to be on the safe side. The big difference with the tune is the car is making over 440 lb ft of torque by 2600 RPM. Before the tune, it took me to 4150 RPM to make 440 lb ft (remember, max tq before was 444 @ 4750, so thats near my before max tq but at 2600 RPM!)!! The turque curve is no longer a curve but a flat line from 2000 RPM to 5500 RPM when it starts to drop off. All in all the throttle responce seems much better but this hasn't helped my traction issues. 
BTW, we used a Superflow Dyno which I've been is by others is notorious for being a "dream killer" on the dyno. The numbers on his dyno I've heard are lower then the Mustang and Dyno Jet Dyno's. The owner of Jannetty Racing in CT where I got the work does says, "my dyno tells the truth"!! They also were very surprised by the before numbers. I have to thank Lou Belanger for that one, he told me the car would make some nice tq numbers down low with his setup!! I have the comparision graph but I'll have to have it scanned or I'll take a picture of it.

BTW, we used a Superflow Dyno which I've been is by others is notorious for being a "dream killer" on the dyno. The numbers on his dyno I've heard are lower then the Mustang and Dyno Jet Dyno's. The owner of Jannetty Racing in CT where I got the work does says, "my dyno tells the truth"!! They also were very surprised by the before numbers. I have to thank Lou Belanger for that one, he told me the car would make some nice tq numbers down low with his setup!! I have the comparision graph but I'll have to have it scanned or I'll take a picture of it.