hello I have a leaking stock exhaust manifolds on my ford f-150 5400cc 2006 Harley Davidsson and i was wondering what would be best to buy, do you recommend the OBX long tubes with a high flow resenators?

Leifur

 

Stock exhaust leaking on an '06, first i've heard of that.

Anything performance designed in stainless. Magnaflow, Borla, Corsa, all depends on what tone you want. Tone? Magnaflow. Aggression? Corsa. Mix of the two? Borla.

The OBX Longtube header kit is a fine kit, it would compliment a new cat-back very well.

 

does anyone of you know anything about the OBX shortys ?

 

shorties are weak. If your going to replace your OEM manifolds and you dont have crazy smog laws like us in California, then longtubes all the way.

 

here in Iceland are crazy smog laws so it has to be 100% legal

 

I don't think that longtubes would be legal then.

 

Iceland?! I didnt even know people lived there....

 

If you get the catted OBX kit you'll throw codes. I know because mine did. The clamps on the kit are junk too, have them welded.

 

Why not? As long as the catalytic converters are compliant and emissions capable they should be fine. Its the cats that will matter if it can pass or not. Obviously OEM cats won't fit.