- Wheels & Tires
The Stillen catback exhaust system is very good. I had it installed with Injen SP intake system. The acceleration from the car is great, but loud. I noticed a drop in MPG, but this happens in the winter with my 2010 Maxima. After install, the exhaust was touching a support bar under the car. Some spacers/washers corrected the problem. As advertised, exhaust note is aggressive under acceleration with load on the engine, and relatively quiet when cruising. Without radio on, the noise can be annoying, but the power is FANTASTIC.