Can anyone confirm this re: Gen v viper?

[09 Venom]

I have read and heard conflicting stories regarding the start-stop feature and cylinder deactivation. Does anyone have knowledge from a credible source if our next snake will have
one, both or neither of these horrific features?

 

[01sapphirebob]

While I have no inside info I would venture a guess and say it DOESN'T have it. That's just MHO.

 

[bluesrt]

its completely stupid idea, my o9 silverado has it and gets worse gas milage than my 02- complete clowns, how did that happen? oh my 07-08-and 09 all worse than my 02 by 3 mpg at least

 

[72hemi]

Well it cannot have cylinder deactivation if it is a manual transmission. That feature is too difficult to implement on a manual car which is why it is not on the manual Challengers.

 

[Chelseasnake]

yes it will have it.............. you turn the key off everytime you stop then turn it on to drive lol

 

[ViperGTS]

Well it cannot have cylinder deactivation if it is a manual transmission. That feature is too difficult to implement on a manual car which is why it is not on the manual Challengers.

cylinder deactivation has nothing to do with the transmission.
The "rest" of the engine is still running

 

[ZYellow01RT]

"Viper" and "gas mileage" should never be used in the same sentence.

 

[72hemi]

cylinder deactivation has nothing to do with the transmission.
The "rest" of the engine is still running

When I was at SEMA last year and talking with the folks from SRT that is the response I got.

 

[BigDawg]

cylinder deactivation has nothing to do with the transmission.
The "rest" of the engine is still running

If you look at all the cars on the market with cylinder deactivation, the automatic version has it, the manual does not.

 

[kickinasp]

Manual Transmissions dont have cylinder deactivation due to the fact that when the cylinders drop out and come back in you will "feel" this in the vehicle and drivetrain a lot more than in an auto where the torque converter absorbes the transitions. The coming back in is where its not commerical. Its a hell of a bump.

 

[ViperGeorge]

Manual Transmissions dont have cylinder deactivation due to the fact that when the cylinders drop out and come back in you will "feel" this in the vehicle and drivetrain a lot more than in an auto where the torque converter absorbes the transitions. The coming back in is where its not commerical. Its a hell of a bump.

This is what I got from two SRT engineers, one on the Challenger SRT/8 and one on the Gen V Viper. The reason that the manual does not have cylinder deactivation is that Federal rules prohibit the manufacturer from claiming increased gas mileage on manual trans cars because they cannot determine when/if cylinders will be deactivated because of user selected gears. Given this there is no benefit to CAFE to justify the cost of adding it. On auto trans cars the programming determines when cylinders are deactivated based on load and speed.