Originally Posted by GTX MATT
ABSOLUTELY run extensions, it can make a huge difference below peak torque. And "too long" really doesn't hurt, too short will kill you.

I'm pretty sure not running collector extensions on a set of headers is where the old "engines like backpressure" myth started.

Uncle Tony's video on the collector extensions and exhaust scavenging were dead on.



Thanks , I hope it helps a little . At least make me think those TTI headers were worth all the money and grief . LOL

6.50 @105.26