Come on now, all gen4s matter. With a 3.5 upper and 4lb lower I'm peaking at about 25lbs. I'm on the hunt for a 3.625 upper right now to drop it down a little. So far it's been great. The crusher was definitely a MFer to install. But hopefully the end result is worth it.
Once you tune for E you'll never want to go back to 91-93.
Good luck bro.
Dyno it yet?
Sent from the El Paso JR college dorm using the svtperformance.com mobile app