Supercharger and cats
#1
Supercharger and cats
I have a 2005 F150 FX4 supercrew with 6inch lift and 35"BFGs. I have a new 5.4 from Promar and a Edelbrock Supercharger. I have a small exhaust leak where exhaust pipe hooks up to exhaust manifold. This is due to a new set of headers I put on when installing engine. Headers were warped and leaking at collectors. I now have new stock manifolds on now but my exhaust pipe is egg shaped now and will not seal up. I have been to several muffler shops but cant get exhaust to seal up. I still have stock cats on that have about 230000 miles on them. My issue is which cats do I need to install. Ford wants about 2800 for new cats and I think that's a little too high priced. I have talked to many people and look at a lot of sites and I am getting all sorts of ideas. I have been told that if I go with a free flowing cat my boost will drop so I need some that are close to stock as possible. Borla,Flowmaster,and Magnaflow have come up. Any suggestions would be appreciated!
#2
TECH Fanatic
Kooks performance cats. Boost will drop but power will be th same, boost is just measure of restriction, less restriction less boost and more power...
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RED2K
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02-18-2003 11:41 PM