Performance exhaust systems for LS V8 and any performance car usually aim to satisfy two requirements:
Improve Performance.
A good performance exhaust system makes more power at high rpm. The torque at high rpm drops off slower, giving a higher peak power result. Also, we notice that Torque is higher everywhere with a good sound, even at low rpm. This is despite them having larger primary pipes, which could be because a good exhaust system’s piping is closer to the proper tuned length. Tuned Length is challenging to suit the engine bay, so many headers are just a collection of different-length pipes that “do the job” of getting the exhaust out.
Provide the enjoyable sound the owner wants
Commodore exhaust for LS V8 models can sound beattie a bit like an old-school muscle car if the pipes are closer to the tuned length. But enjoyment is in the owner’s mind, and some prefer a “wailey” sound with lots of crackle on deceleration!
Catalytic Converters
Factory catalytic converters present quite a restriction, They can be replaced with high flow metal substrate cats that help provide better flow.
The images include an explanation of the factory cats, the look inside a factory-style cat and a metal high-flow cat.
Metal cats are more reliable for performance applications as well. We prefer to use good quality thick-walled cats, and we notice that 200 cell cats have less associated “white noise” and give a more pleasant exhaust note in the cabin.
Performance Headers (or extractors):
Draw maximum exhaust from the cylinder during the duration of the exhaust stroke.
The escaping exhaust gases moving through the header pipes create energy pulses that form vacuums, pulling additional exhaust out of the combustion chamber so that the maximum amount of fresh fuel and air can be drawn in. Headers draw maximum exhaust from the cylinder during the duration of the exhaust stroke.
For a header to work, the individual primary pipes must be manufactured of the right length and the correct diameter. This is specific to the engine and its modifications.
We commonly use Headers with long primary pipes between 1″3/4 and 2″ diameter on the VT-VF V8 LS1 LS2 L98 L76 L77 LS3 engines that we tune. We prefer long four int 1s with 1″7/8 for mist cam upgrade builds. Calculators indicate the best length primaries for cam upgraded engines aiming to make power peak at 6600rpm is around 32-33″ long and a little under 1″7/8 in primary size. Maybe measure the headers you plan to use and see how they compare. We are making custom headers with precisely the right length and diameter for our Sports Sedan Race Car.
Below are some ceramic-coated headers
Performance Catback:
Systems should make a good sound. We find stainless steel systems sound the best and last much longer. Beware of cheap, droney exhausts that are poorly designed. They may save you money, but people often regret the money spent.
- VE Commodore Exhaust
- VF Commodore Exhaust
- Bimodal Exhaust
- VY Commodore Exhaust
- VX Commodore Exhaust
- VT Commodore Exhaust
- HSV Exhaust Systems
- LSA Exhaust Systems
Late model 6 & 6.2L Commodores often gain around 50 rwkw from combining an OTR cold air intake and complete exhaust system upgrade with an accompanying tune. Around 20rwkw of this improvement is contributed by the exhaust. Plus, they sound much more like a V8!
Postal Performance Exhaust Kits
We also offer to post DPE Manta pro Commodore exhaust systems across Australia for great prices.
Contact Oztrack
Call us to find out the different sizes and models available. call 0291193895
