Originally Posted by Superchips_Distributor (Snip

We test many parts for these trucks, as we do not accept manufacturers claims - many of them will say anything to make a buck, you know how that goes. Magnaflow simply does the best job in terms of not only peak HP gain, but most importantly, part-throttle torque at any rpm or throttle position, which is key for the drivability of these trucks - as you can see in the comment from the other post, Gibson, along with Flowmaster & many other exhaust brands, can actually cause a *loss* of part-throttle torque and torque at lower rpms regardless of throttle position, even though they do gain some HP at wide-open throttle - this is due to a lack of proper flow engineering to speed up the spent exhaust gases when upsizing the tubing diameter, and this loss of torque is a very common complaint among F-150 owners (and many truck & SUV models in general) who install cat-back exhaust systems, so the choice there is important. All of our vehicles wear Magnaflow - every single one of them - simply because it does the best job.