It's been a good day today with the 2008. We have been able to try a variety of exhaust combinations, and have the following results to report:
2008 Viper Baseline = 546 rw hp / 515 rw tq
3 inch Stainless Catback Exhaust System = 561 rw hp
(15 rw hp gain over stock)
3 inch Stainless Full Manifold-back Exhaust System with High Flow Cats = 569 rw hp
(23 rw hp gain over stock)
3 inch Stainless Full Manifold-back Exhaust System with No Cats = 575 rw hp / 546 rw tq
(29 rw hp / 30 rw tq gain over stock)
The power gains are pretty even from 3000 to 6000 rpm on all of the above mods.
The factory airbox seems to flow very well and before we tried the exhaust mods we found that there was no power gain by removing the factory air filter and the lower half of the factory airbox. I dont think SRT left any power on the air induction side.
We are headed to the track tomorrow. Pics and videos are coming at some point when I get some time.
Good stuff, I'm interested what can be done with the 08 car before all the big gun TT and S/C programs step in. Thanks for the info John, have fun at the track... snow here.
Good stuff, I'm interested what can be done with the 08 car before all the big gun TT and S/C programs step in. Thanks for the info John, have fun at the track... snow here.
I think the guys who want big power cars are going to buy 2006 SRT's cheap then mod them. The nice thing about the 2008 is that it will make close to 600 rw hp with a few bolt on parts. And the car with that power level is fast enough to satisfy most.
I think the guys who want big power cars are going to buy 2006 SRT's cheap then mod them. The nice thing about the 2008 is that it will make close to 600 rw hp with a few bolt on parts. And the car with that power level is fast enough to satisfy girl drivers, & old men.
It's been a good day today with the 2008. We have been able to try a variety of exhaust combinations, and have the following results to report:
2008 Viper Baseline = 546 rw hp / 515 rw tq
3 inch Stainless Catback Exhaust System = 561 rw hp
(15 rw hp gain over stock)
3 inch Stainless Full Manifold-back Exhaust System with High Flow Cats = 569 rw hp
(23 rw hp gain over stock)
3 inch Stainless Full Manifold-back Exhaust System with No Cats = 575 rw hp / 546 rw tq
(29 rw hp / 30 rw tq gain over stock)
The power gains are pretty even from 3000 to 6000 rpm on all of the above mods.
The factory airbox seems to flow very well and before we tried the exhaust mods we found that there was no power gain by removing the factory air filter and the lower half of the factory airbox. I dont think SRT left any power on the air induction side.
We are headed to the track tomorrow. Pics and videos are coming at some point when I get some time.
The 08's have great hp, but lack the tq of the older vipers. My slightly worked-over 01 making 565rwhp and 610rwtq N/A.
nearly 500 foot pounds where he punched it. That's amazing for stock....your 610 RWTQ just means that your heads don't keep up with the rest of your mods.
Last edited by The Former PFR : December 7th, 2007 at 07:18 PM.
Nice numbers, but it's interesting that it's 96.13 degrees on the north side of Houston (per dyno run #12) and the rest of Houston only reached 80.
Must be that localized "El Nino!"
i suspect the side exhaust always has some temp effect on the dyno as the dyno stack sits to the right side of the cars. but the correction factor was still 1.00 on that pull. the motor did have some heat soak on that pull too, so its likely a wash either way.
we will re-dyno on monday after we have had the weekend to put a few miles on the car. you are more than welcome to come over and do a temperature verification when we make the dyno pulls if you would like to.
3 inch Stainless Full Manifold-back Exhaust System with No Cats = 575 rw hp / 546 rw tq
(29 rw hp / 30 rw tq gain over stock)
Excellent! What brand exhaust was this? Also, no CEL or codes were thrown with the cat removal? Thanks for getting right on with the mods and testing!!! I'm sure that the audience is HUGE.
I think the guys who want big power cars are going to buy 2006 SRT's cheap then mod them. The nice thing about the 2008 is that it will make close to 600 rw hp with a few bolt on parts. And the car with that power level is fast enough to satisfy most.
Great dyno charts, and yes I think until the 08 car gets into full swing and more avaiable at least, most will go for an 06 and rebuild it TT style. Even then the 08 cars power seems plenty with some bolt on's. I'm sure UGR will have some hair dryers attached to their 08 motor sometime soon. It would be interesting to see what a built N/A motor would net. I'm thinking an 08 ACR with a built 750HP motor, exhaust a few other track upgrades would own most tracks it attended.
Now lets see the pics and vids.
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