rear o2's do not affect performance... If you get long tubes, get a custom tune for them so you dont have idle issues... and with that custom tune, you can shut off your rear o2's. My rear o2's are online and cause me no problems.

 

yup, i have a 5.4, will the manifolds on a L be the same as my truck?

 

RPM Outlet is probably one of the worst places on the internet to buy parts from. I have not once ever, anywhere, on any forum I've been to seen 1 positive experience dealing with them.

I'd look elsewhere for the same part.

 

thanks for the info man
i think im probably just gonna have something fabbed up anyways, it will probably be cheaper that way, i think i know what im gonna do know, it will be a few months until i get it all done though, want to do a body lift and 35's first that way i can get the tip to tuck up right

 

I got a few parts from them, a meziere water pump and a few other things for the mach, they've been pretty good to me, nothing to complain about.

 

You truly are the first I've ever heard say that!

 

*edit* I thought so, but I guess I was wrong, thanks for looking out Jbrew

 

Less scavenging manifolds on the L motor vrs's a stock non blown 5.4L motor -

 

x2 I had mine taken off for 3 years on my '02 Mustang.