B.s., the epa is just a bunch of money hungry criminals. If they did their job, there wouldn't be fracking, there wouldn't be people lighting their water on fire out of their faucets. They pick and choose what they want to enforce based upon money. That us all they're about. Get your head out from under a rock.This is all because rolling coal people and diesel drivers removing cats and other emissions regulation devices.
You can still have high horse power car with tune. You just need to use cats, o2 sensors etc. Just no more cheap ass way to increase horse power. Just use high flow cats. There is a reason why EPA exists and they are just doing their work. This very minor thing after all. If tune fails emissions testing with cats and sensors operating, it is just a very poorly done tune as car is not running right. I would like Gale Banks to comment on this as he really knows how to make crazy horse power with diesel engines without black smoke.