Question #6 from
doctorbob: It seems a lot of Viper owners change the exhaust system in short order. Unless there are emissions issues (which I am sure is probably the answer)... if you can have color options, interior options... why not exhaust options? I am sure a number owners are looking at that NA 675 h.p. show car and seeing what can be easily exchanged on the car to push the horsepower.
the exhaust system has to balance back pressure, pass by noise and emissions. Two are federally mandated and generally are counter to the performance aspect......
Question #7 from
viperbilliam: In what areas did the new Viper gain weight? Has the interior heat management been addressed?
Interior heat management has improved due to the elimination of the exhaust crossover pipe, a more effective cooling module, and the relocated hood louvers. The new hood louvers are in a lower pressure area of the hood, making them more effective at extracting hot underhood air.
For weight info, see answer to question #8.
Question #8 (okay, a couple) from
rcl4668:
1) Has the 2008 Viper in fact gained weight? It seems that some component changes would result in weight loss: For example, elimination of crossover pipe in the exhaust system, switching from runflat Michelin Pilot Sport ZP tires to nonrunflat Michelin Pilot Sport PS2 tires.
2) If Viper has gained weight or is the same weight as the 2003-2006 models, what accounts for that? What other components have gotten heavier to offset the weight reductions above?
The 2008 Viper is nearly identical to the 2006 model in terms of weight. The '08 engine gained weight due to VVT and other modifications (and also gained 90 HP!). The '08 trans is slightly heavier due to 10% larger gears and other mod's for increased torque capacity. The '08 diff is also slightly heavier (4 pinion vs 2 pinion), again to handle the increased torque. These weight increases are offset by the elimination of the exhaust crossover pipe, the new Michelin PS2 non-run flat tires, and a slightly lighter cooling module (electric vs hydraulic fans).
The combined weight of the '08 dual disk clutch and flywheel is approximately the same as the 2006 combination, but inertia is reduced, pedal effort is reduced, and torque capacity is increased.