Give your Ascent some more power and a better throttle response with the Lachute Performance J-Pipe
Designed to greatly improve exhaust flow and entirely made of 304L stainless steel, this downpipe is efficient and resistant.
It is built with a 1/2 inch thick laser cut rear flange to minimize heat distortion and provide a true 3 inch fitment all the way through.
We have also welded an additional oxygen sensor bung for any tuning needs or wideband sensor install.
Includes an adapter to fit with an OEM donut gasket.
Available catless or with a 300 cell high flow catalytic converter.
**This part requires custom ecu tuning**
Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.
Learn More: www.p65warnings.ca.gov