I am gonna purchase an 18" magnaflow and have it dumped at the axle. Is it beneficial at all to replace the cats with high flow cats? They arnt that expensive on ebay... Just curious!

Jon

 

Do you plan on running a true dual setup? Or just doing a cat back style?

Here is the setup I did today and I have noticed GREAT gains.

https://www.f150online.com/forums/sh...d.php?t=227867

I have had the magnaflow single in/out kit before, and then straight piped. This new setup is far superior then any of the others. I'm unsure of weather it was the the deletion of the two rear cats, the true dual going through a x-piped magnaflow muffler, or the combo of both, but it sure made one hell of a difference.

Weather replacing the front cats with some hi-flow's will help out that much more I'm unsure. I don't see why they wouldn't help a little though.

If you are interested in magnaflow products, I suggest going to http://jusnesmodified.com/ and talking to them. They have great customer support and service. Not to mention some great prices.