SRT Engineer Chat HERE on September 19th!

[SRT Engineers]

I plan on dynoing my 2008 Viper after about 500-1,500 miles of driving. What is the driveline loss percentage for the 2008? From a previous post on this forum, someone stated that 12% driveline loss was the correct figure. Is this accurate?

Safe rule of thumb is 12-15%.....

[Jerz Viper]

Yes sir, thats correct

[Catwood]

What's your opinion on Danica Patrick's ability to drive a real car?

[SRT Engineers]

Late 2008 availability. GTS Blue will likely be complete before the package is released. The parts will be available through Mopar.

[Y2K5SRT]

Originally Posted by Jerz Viper

Yes sir, thats correct

(I know - but I will bet you two dollars and thirty-three cents that everybody else is wondering just what you are smoking up there in Jersey...)

[Jerz Viper]

It's the Methane gas from the swamps....sorry

Thanks SRT

[SRT Engineers]

Nadern 4) Getting back the tuning, one of the benefits of the performance tune is it leans out the mid range. The stock program at times felt a bit sluggish in mid ranges bursts. Now with the new program, it is instant power and really screams.

Is there a reason why the car is programmed to run rich in the mid range from the factory?

Nader - Several variables are part of the equation when calibrating the fuel curves. Things like knock sensitivity, catalyst temperatures, valve temperatures, piston temperatures and spark plug temperatures are all dramatically impacted by fueling. We calibrate the engine as lean as we can in order to satisfy all of our durability requirements for all of the engine components. It is true that leaning out the mixture at some (but not all) conditions will produce more power but at the cost of component durability! Also, keep in mind that there are other enrichment factors that can come into play, especially on a chassis dyno, that can give you more fuel than you might otherwise normally have if things like air and water temperatures are not controlled well. Also, chassis dyno noise can be interpreted as knock by the ECU and it will pull out spark and add fuel so don't always believe what you see there!

[SRT Engineers]

Originally Posted by mad0953

In regards to gears again: If you could put any ratio in the rearend is there any one ratio you would put in for an a mostly street driven car?

If I were doing alot of "streetlight competition" i"d use a 3.55 or 3.73. Remember nvh and fuel consumption will tank......

[SRT Engineers]

Originally Posted by Catwood

What's your opinion on Danica Patrick's ability to drive a real car?

Sorry, they don't run Chrysler products in IRL so we don't follow that series

[SRT Engineers]

Originally Posted by Catwood

What's your opinion on Danica Patrick's ability to drive a real car?

Well after seeing the Motor Trend Video... she can drive fine, as long as she doesn't talk.

[SRT Engineers]

What's the inside diameter size of the headers on the '03-06? Is it 1.5 inches? If it is, why so small for a cylinder that size? Is it the same size for 2008?

Yes, the pipe is 1.5 id....it was picked for packaging concerns and to help the low end torque....

[2002_Viper_GTS_ACR]

What is the difference between the comp coupe engine mounts and the oem street engine mounts? (I know the tranny mount is different, but what about the engine mounts?)

thanks!

[RC Viper]

OK We have the Charger re-make already and the Challenger next year. When do you guys plan a Superbird debut? I have dreams of seeing new 20 foot long winged warriors coming down the street (as you can tell by my signature I am the proud owner of a 440 + 6 bird).

Seriously, do any of you guys mess around with the old muscle (Vipers distant relative)?

(Y2KSRT: I assume this is an outrageous enough new product comment that it doesn't need deleted!)

[Vipermann]

Are the overall performance parameters of the 2008 Coupes (not the CC) more condusive or favorable to some forms/classes of racing where Dodge has been absent in recent years -- like ALMS?

[Y2K5SRT]

Originally Posted by RC Viper

(Y2KSRT: I assume this is an outrageous enough new product comment that it doesn't need deleted!)

Hey, if Janni can get shot down by the SRT guys on her outrageous question I don't see why you can't...