[TofuJoe]

A header without a tune may give you significantly less gains than with tuning.

An OFT tune will help. An EcuTek tune from a good tuner will optimize this upgrade specifically for your car.

Originally Posted by Tiberium

I've been running Ft86 Speed Factory's catted UEL header for a few weeks now and it's great. I highly recommend it. No tune needed. Torque dip feels like it's gone.

http://www.ft86speedfactory.com/ft-8...2013-ft86.html