Post by
WDRacing »
https://forums.nicoclub.com/wdracing-u3125.html
Fri Jun 13, 2008 6:16 am
My take on test pipes...
They add 1-2 whp at peak over high flow cat. So I'd prefer to stay legal and not willingly hurt the environment. But I did run a test pipe on my 240 and Skyline for a total of 5 years...lol. So I'm definitely not the green police
As far as being bad for the car, I can't see how it could be. You're just not removing crap from the combustion burn. My current builds all involve a highflow cat and maybe an exhaust cutout for the dyno/drag strip. Mostly because I occasionally make it back up to Mass and I can't afford a ticket "if" I ever got checked. Not likely I know...but I can weld so a DIY highflow install is to easy not to do.
WD