Namely, it replaces the rear axle-back and tips and then a portion of what we refer to as the mid-pipes. This system is emissions friendly and doesn’t require any tuning. In New Jersey, vehicles must pass emissions testing to ensure they meet environmental standards. Since cat-back exhaust systems do not modify the catalytic converter or engine management system, they generally do not affect a vehicle’s ability to pass emissions testing.
Another difference is with the material used in the cat-back exhaust system against that in stock exhaust systems. But the problem with a resonator is that it can cause restriction to the flow of the exhausts. In the end, this can end up lowering your vehicle’s performance. It is also more affordable and easier to install than other types of exhaust systems, including the cat-back exhaust system. Cat-back and axle-back exhaust systems are both aftermarket exhaust systems. A performance exhaust system, like the cat-back exhaust, allows for easy splitting into dual exhaust.
These look like standard mufflers with a VERY unusual side entry rear exit configuration. Notice the heat discoloration at the intersection where the split occurs.Heat discoloration shows up where there is a flow restriction. Notice also the heat discoloration just after the pipes enter the silencers. It is AMAZING the engine makes the power it does through this congestion. Features Only 10 lbs [catless and non resonated version] 304 stainless steel piping Smooth air flow for maximum horsepower Compatible with both manual and automatic transmissions TIG welded to perfection... The main functions of exhaust systems are increasing horsepower and improving your engine sound.
Advanced 3D scanning tools and cutting-edge software provide our engineers with a high-resolution digital model of the Audi B9 S4 chassis. This data is then used to maximize the exhaust size for flow and optimize all available space for the perfect catback fitment. CORSA branded exhaust systems are backed by a Limited Lifetime warranty for as long as you own your vehicle with proof of purchase. The new exhaust sounds perfect, a marked improvement over stock. It is not too loud - I use the car as a daily driver and drive in capital beltway traffic.
I do live in a residential community and want to keep things civil with my neighbors...so I went with the resonated/muffled setup. Orders of $299.99 or more ship free within the continental U.S.Shipping to Alaska and Hawaii is additional and not included.We do not ship international at this time. Enter your email address above, to be notified of new products released. Sign up to our newsletter and stay up to date on all the latest news, products and events.
Exhaust systems are integral to your ride’s performance