I have a little explanation sheet I use for my customers choosing exhaust mods for the Gen 4's . Take a look, it might answer some questions. My attachments come over with varying font size.
Generation 4
EXHAUST MODIFICATIONS
The new Generation 4 engine responds very well to exhaust modifications. The increased rpm limit and variable cam timing works well with a tuned aftermarket exhaust system.
There are numerous exhaust options for the Generation 4 engine. Below is an explanation of the characteristics of each.
Note: Use of headers on a 2008-2010 models will not pass emissions in California.
SIDE EXHAUST SYSTEMS (Retains production catalyst)
(10-12hp)
Changing the side exhaust gives your Viper more tone, character and marginal power gains. Other benefits are reduced exhaust related heat and attractive polished or chromed exhaust tips.
Belanger/ DC
This system is made by Belanger for DC Performance and features stainless Magnaflow mufflers and chrome tips. This system is for those who like a system with a louder sound and more tone. Available in 2 ½ inlets (for hookup to stock exhaust) or 3-inch inlet for hook-up to Headers or high flow cats.
Corsa
The Corsa “track” system is a very high quality stainless system with resonance canceling mufflers and polished tips. The system has good tone and very little resonance. This system is for those who like a quieter system with more tone. Available in 2 ½ inlets (for hookup to stock exhaust) or 3-inch inlet for hook-up to Headers or high flow cats.
HEADERS
ACRX Merge Headers (35hp)
These headers are the same as used on the ACRX racecar. They are an all-stainless design with merge collectors. The come with high flow cats and turnouts or without cats. The benefit of this header is best peak power and a tuned sound. This system can be used with the stock mufflers or with the DC Belanger or Corsa side exhaust.
BELANGER Headers (30hp)
These headers are a mild steel tri-y design. They are ceramic coated inside and out. They can be supplied with high flow cat or no cats for hookup to the stock mufflers or Corsa exhaust. The system can also be supplied as a complete system with headers, cats and side pipes. A benefit of this system is good low-end torque and less radiated heat under the hood.
Ported Intake Manifold (17-24hp)
Our custom ported intake manifold increases upper rpm airflow into the engine. This modification will pass emissions and work well with the stock computer or the Mopar Performance Controller.
Performance Engine Controller (5-15hp)
This controller removes the lag associated with the production controller, has revised fuel spark and cam position tables, Rev limit increased to 6500 rpm with softer fuel cut. 1-4th skip shift removed. Use 93 octane fuel for best results.
* Off road use only.
Air-Oil Seperator
Oil vapors pumped into the intake manifold produces engine knock and reduces power. This emissions compliant oil separator keeps the oil from entering the intake manifold. A must for modified or track engines.
2008-2010 VIPER ENGINE PERFORMANCE PARTS DESCRIPTION
EXHAUST MODIFICATIONS
The new Generation 4 engine responds very well to exhaust modifications. The increased rpm limit and variable cam timing works well with a tuned aftermarket exhaust system.
There are numerous exhaust options for the Generation 4 engine. Below is an explanation of the characteristics of each.
Note: Use of headers on a 2008-2010 models will not pass emissions in California.
SIDE EXHAUST SYSTEMS (Retains production catalyst)
(10-12hp)
Changing the side exhaust gives your Viper more tone, character and marginal power gains. Other benefits are reduced exhaust related heat and attractive polished or chromed exhaust tips.
Belanger/ DC
This system is made by Belanger for DC Performance and features stainless Magnaflow mufflers and chrome tips. This system is for those who like a system with a louder sound and more tone. Available in 2 ½ inlets (for hookup to stock exhaust) or 3-inch inlet for hook-up to Headers or high flow cats.
Corsa
The Corsa “track” system is a very high quality stainless system with resonance canceling mufflers and polished tips. The system has good tone and very little resonance. This system is for those who like a quieter system with more tone. Available in 2 ½ inlets (for hookup to stock exhaust) or 3-inch inlet for hook-up to Headers or high flow cats.
HEADERS
ACRX Merge Headers (35hp)
These headers are the same as used on the ACRX racecar. They are an all-stainless design with merge collectors. The come with high flow cats and turnouts or without cats. The benefit of this header is best peak power and a tuned sound. This system can be used with the stock mufflers or with the DC Belanger or Corsa side exhaust.
BELANGER Headers (30hp)
These headers are a mild steel tri-y design. They are ceramic coated inside and out. They can be supplied with high flow cat or no cats for hookup to the stock mufflers or Corsa exhaust. The system can also be supplied as a complete system with headers, cats and side pipes. A benefit of this system is good low-end torque and less radiated heat under the hood.
Ported Intake Manifold (17-24hp)
Our custom ported intake manifold increases upper rpm airflow into the engine. This modification will pass emissions and work well with the stock computer or the Mopar Performance Controller.
Performance Engine Controller (5-15hp)
This controller removes the lag associated with the production controller, has revised fuel spark and cam position tables, Rev limit increased to 6500 rpm with softer fuel cut. 1-4th skip shift removed. Use 93 octane fuel for best results.
* Off road use only.
Air-Oil Seperator
Oil vapors pumped into the intake manifold produces engine knock and reduces power. This emissions compliant oil separator keeps the oil from entering the intake manifold. A must for modified or track engines.