08 Viper header results.

[Dan Cragin]

We have done some testing on headers for the 08 Viper. Many tuners have experienced check engine light problems with the five into one design. We worked with Lou Bellanger
on his Tri-Y design and made a few changes to improve high rpm power. With this prototype design initial results have been good. No check engine lights. Power gains with catalytic converters and 2 1/2 inch inlet and outlet mufflers were about 40 rwhp and 45 ftpds torque.

The new engine controller is very sensitive to changes. Just removing the air filter and dyno testing the car turned on the check engine light. We are currently testing some air filter designs that will improve power within the current calibration range.

So far, we have achieved about 580rwhp with legal tailpipe emissions and no calibration issues. We believe with some new tuning technology these new cars can be emissions friendly and make 600rwhp. Intake manifold and rocker arm changes should yield more.

I will post some dyno sheets shortly. We are currently doing more testing.

Dan Cragin
DC Performance Inc
310-841-6996

 

[OKFireChief]

Dan, thanks for the 08 test info and great help with my 06 Coupe. The ECM program is awesome! Keep up the good work!!! Jon

 

[rcl4668]

Thanks for the update Dan.

/Rich

 

[B767DRIVER]

Dan, If I were to run Lou's headers and 3" exhaust minus cats with O2 sims, do you think it would still throw a code? Thoughts...Sound very sensitive...Also, what are the AF ratios, before and after, that you have been seeing on the '08?

Thanks,
Sterling

 

[CitySnake]

That's excellent news! 580 RWHP = at least 650 BHP. It will be nice to finally get beyond 650 HP without "significant" mods.

Thanks Dan!

 

[mjorgensen Woodhouse]

When we tested our 08' with the pickled headers we saw an increase in A/F of about .6 across the range compared to stock. I have dyno sheets but am not allowed to post. We also have not seen a check engine light during testing but do not have many miles on the customers car either.

 

[Dan Cragin]

We are going to test some more cars with differing combinations. I think it is safe to say that some good power can be made made with exhaust on the 08 Models.

We want to put some more miles on these cars and check for any calibration issues.

Dan Cragin
DC Performance Inc.
310-841-6996

 

[CarDude]

WooHoo...I want more power already...even if I haven't even pushed it (only 50 miles on it.)

 

[ViperTony]

I've spoken to Lou a few times this past week as he's repairing my GenII headers. I don't know Lou well but damn if he isn't excited about the results from his headers/exhaust on the '08. He couldn't give me details but this man is jumping out of his skin when it comes to the '08 headers. If you can spare a couple of hours of phone time, give him a call and he'll be happy to tell you about his new headers for the '08. I learned more about quantum physics, mathematics and scavenging from Lou in 2 hours then I did in my entire time at college. I envy all you '08 owners...what an easy upgrade to make an already awesome Viper even better. And...this sounds like just the beginning.

 

[Vipermann]

Power gains with catalytic converters and 2 1/2 inch inlet and outlet mufflers were about 40 rwhp and 45 ftpds torque.

If you're developing a header that bolts right up to the stock 2.5" exhaust/cat system ... BooYaahh!!

That is the way to go with these '08s. Who neeeds polished tips? I just want some power gain, at near the same exhaust loudness ... and since the cross-over has now been eliminated, and I for one, don't want added loudness, I would like headers to go with my stock system.

 

[Nsane1]

Weird? why would you want the stock system?? I guess due to the loudness issue, so I guess I can see that. I said screw it go the whole way.

The question in my mind is this: how does this apply to someone with one of the first 3 or so setups? is there a new version coming out or something? I've paid JonB, but he's holding my set til car comes in, or all this settles down...

 

[wallbanger]

Weird? why would you want the stock system?? I guess due to the loudness issue, so I guess I can see that. I said screw it go the whole way.

The question in my mind is this: how does this apply to someone with one of the first 3 or so setups? is there a new version coming out or something? I've paid JonB, but he's holding my set til car comes in, or all this settles down...[/quote

Ask jonB but i believe as of yet there is not a newer 08 belanger setup... jonB is waiting for results on the current customers using the headers to make sure there are no issues with oxygen sensor or engine controller... i believe in the past belanger headers cats had to relocate their oxygen sensor on a previous generation viper.....doesn't mean to say there will be an issue with the 08 but he is just showing caution as u don't have u're car yet...

 

[Vipermann]

Weird? why would you want the stock system?? I guess due to the loudness issue, so I guess I can see that. I said screw it go the whole way.
.

I tried almost every system with my '05 ... in the end, I think the car really doesn't need more noise to draw attention ... the '08's are supposed to be a tad louder than the '03s-'06s, and since headers make any car louder just by themselves, I figure that headers + stock ought to sound just about perfect on an '08. (And it's more mod-stealth on the street that way.)

 

[Dan Cragin]

The system we used do not use the "pickles" in the primary pipes. With the higher rpm of the new engine I thought this might give better gains. We will be testing the standard header as well. We would like to get a couple thousand miles on the first car and retest it. So far, the system looks good. We will be running a car at Viper days this weekend, this should provide some good feedback.

 

[CarDude]

The system we used do not use the "pickles" in the primary pipes. With the higher rpm of the new engine I thought this might give better gains. We will be testing the standard header as well. We would like to get a couple thousand miles on the first car and retest it. So far, the system looks good. We will be running a car at Viper days this weekend, this should provide some good feedback.

Please send me some of your header so I can test them here at Altitude...you know that can be a problem sometimes. Yes I will make that sacrific for you, you don't even need to pay me anything...

 

[ViperDude]

Dan you have a PM...

 

[CitySnake]

Please keep us informed Dan! It's a whole new ballgame with the new engine and I will need some new products to empty whatever's left in my wallet.

Seriously though, thanks for all the testing.

 

[CitySnake]

Any updates Dan?

 

[Vipermann]

If you're developing a header that bolts right up to the stock 2.5" exhaust/cat system ... BooYaahh!!

That is the way to go with these '08s. Who neeeds polished tips? I just want some power gain, at near the same exhaust loudness ... and since the cross-over has now been eliminated, and I for one, don't want added loudness, I would like headers to go with my stock system.

Bump.

Any update???



...

 

[Larry Macedo]

We're currently testing a system here and the power, sound and performance have been excellent. Initially we had a problem with the 02 sensor extension, but found and fixed that quite easily. If you ever install these headers and experience a Bank 1 or 2, Sensor 2 malfunction of any kind, check the wiring orientation @ both of the connectors on the extensions. You can simply plug the 2 connectors together and make sure the same wire enters and exits this connection. Overall, our numbers were a bit lower, although we're running a gear ratio change and a colder plug.

 

[Larry Macedo]

After minimal track testing due to a motorcycle accident last night, Keith dropped roughly 3 tenths from his best time of 11.13 to 10.86 with the Belanger Headers and Exhaust. Hopefully Friday night he's able to drop 1 or 2 more.

 

[Nader]

Wow those are some serious numbers.

After minimal track testing due to a motorcycle accident last night, Keith dropped roughly 3 tenths from his best time of 11.13 to 10.86 with the Belanger Headers and Exhaust. Hopefully Friday night he's able to drop 1 or 2 more.

 

[Malu59RT]

Overall, our numbers were a bit lower, although we're running a gear ratio change and a colder plug.

Larry, is there truth in the +50whp that a lot of people have been reporting? I've seen in person a 08 with Full Belangers, and it sounded amazing, but didn't give 50whp. BTW, wasn't Hennessey claiming +50whp from just a catback, when he got his 08?

Congrat's on the 10's!

 

[wallbanger]

No hennessey claim was with headers

 

[Larry Macedo]

Larry, is there truth in the +50whp that a lot of people have been reporting? I've seen in person a 08 with Full Belangers, and it sounded amazing, but didn't give 50whp. BTW, wasn't Hennessey claiming +50whp from just a catback, when he got his 08?

Congrat's on the 10's!

Thanks!

Were those numbers standard or SAE corrected?

I think too much emphasis is placed on the peak number, where as it should be placed on the area under the curve across the board. The Belangers proved to be true performer regardless of peak numbers. Keith dropped nearly 3 tenths with a simple bolt-on @ a track that is questionable on Wednesday nights. I still don't understand why the track workers allow cars with street tires to drive through the water box...