Don't have my printout yet. Should be getting it via email in the next day or two. It was a great day on Sunday. Mid-50's and sunny and we had about 8 Vipers show up along with a handful of NSX's.

My car pulled 425 WHP and 466 ft-lbs of torque average on 3 pulls. About what I was expecting.

Here's a few pics of the day:

http://www.viperactive.net/pictures/dday/

I got a video of my pull. It's around 50 Mb, and it's nothing too exciting to watch, but you can download it if you want:

http://www.viperactive.net/videos/bee.avi

 

Dyno video's are pretty boring but I like looking at Vipers so I will watch it anyway. Numbers aren't anything to be ashamed of either.

 

What's the average stock numbers?

 

Stock is typically considered to be between 410 and 420 WHP (it's a fact that Dodge underrated the cars from the factory). The shop owner was upfront about the fact that his dyno reads a bit low and several other Viper owners there who have good baselines on their cars said the numbers were between 15 and 20 HP lower than previous dynos. That makes me think that my dyno is about right given that the exhaust and hi-flow cat mods are "worth" more in terms of gain on a Viper than we see in the Z community. I'm probably around 430-440 WHP, all said and done, but 425/466 is what is says on the sheet and I'll take it.

 

Wow-very nice. Id love to see the power curve when you get it....

edit-saw a curve in the pics 429whp 466ft/lbs Uncorrected, is that you? If so what were the SAE or STD numbers?

 

Yeah, that was me....I couldn't remember if it was 425 or 429, we looked at a LOT of numbers that day. I believe those are corrected numbers, but I'll be sure to post the sheet when I get it. If they are un-corrected then they are high, because the temps were cooler than SAE standard. Hopefully we'll get our sheets tomorrow.

ETA: The thing I love about this car (you can see it in that graph) is that I'm over 400 ft-lbs of torque at 2400 RPM, and I usually shift around 5700. That's a nice flat torque curve within the power band. A little head work, a different cam, and some roller-rockers in the valve train and this car would be in the low/mid-500's. Still debating on whether or not to do it though, as this is a pretty rare car (1 of 89 yellow ACR's in '01) so I'm not sure how far I want to take it.

 

um yeah ... 425/466 to the wheels with a few bolt-on breathers FTW.

 

edit-tried posting the dyno graph didnt work....

Look on the top right side -Correction Factor: Uncorrected Still very impressive though, that doesnt take anything away from the awesomeness (<----is that a word?) of a nearly stock dyno with #'s like that. As far as adding a cam/valvetrain mods for more power? ---> OF COURSE!!!!

 

LOL....Good eyes!

 

Wowo Kelly.. damn nice numbers.. whats great is, she'll do it all day long too!

 

That is great Kelly... GOBS of power on the low end up to your shift point.. Can't complain about that.
As for adding more stuff... I would say no. Stick with what you have. That is plenty of power and the more work you do to it the more likely you are to head into the same problems as before with work not up to your standards or needing adjustments all the time.
Appreciate her for what she is, a mean @ZZ snake with plenty of bite.
Just my $.02 of course
--B

 

Great numbers...........same place where i got my car dynoed ......

 

Here's my dyno....SAE corrected.



based on the AFR, there is some decent power to be had by installing a piggyback, which I think will be my next move.

 

Almost 400 lb/tq @ 2250 rpms ... how is it possible to even granny-shift without losing traction?

 

That's what makes driving the Viper so much different than the Z. While the peak HP is almost identical to what my Z put down, this car is just a sledge-hammer. Unless I get the tires good and hot (and the roads aren't cold), 2nd gear takes some feathering, and 1st gear is a game of finesse or it's a waste. But it'll do some kick-*** donuts!!!

 

Running a little lean in the midrange (esp that 1 run), and a tad rich up top. Piggyback will surely help, and some timing increase will likely get you even more low-mid range TQ...

 

You could have 800ft/lbs at 2250rpm's and not lose traction, its very simple---->dont floor it

 

See, and personally that is why I did not like the Viper I drove in Vegas. I mean I love the way it looks, but it was just WAYY to twitchy for my driving style. I guess you older guys are better with that feather touch.. I like to be able to apply power liberally, but without being reckless. A Viper, just requires too much patience & tiptoeing for me, It's like a girlfriend having PMS… LOL
Asian Bar girls are more my type..
I like mine to: look good on my arm, (so you can take home to Mom or out to a business dinner); be easy to turn on (or off depending on whether I want to go out and have fun or not); and has the drive of a mustang (at home or on the road).

 

Yep. The fuel curve is "Viper by design", they did this for two reasons....the lean at the bottom/mid was to help with emissions. The rich up top is because the Viper has no knock sensor, and as such the fuel maps are written to the lowest common denominator of gas in the country at the time. With nice 93 here, I have room to lean out the top end (from about 4200 up), and add some timing and should see a decent power increase.

 

Us older guys huh...I'll remind you who the elder is between the two of us pal (and I'll give you a hint, he owns a Z ).

You're right, the Viper requires a very sensitive right foot. There is a thread on the Viper forums right now about how so many people think the Viper is a poor handling "straight line" car, but in handling and skid pad tests, it regularly ranks near the top. I think the key is that a good set of tires, a gentle foot, and alot of practice are necessary to get the most out of the car.

And just for gits and shiggles, check this out:

http://www.undergroundracing.com/video/DBR-TheRock.wmv