Im looking to put headers and high flow cats on my 07 lariot.

1.) what is a real good brand of headers for the money? fit wise, and sound.

2.) what kind of cat should i run?

3.) will i have any problems with my o2 sensors?

Also if you have any suggestions on how to increase horsepower would love ideas, already have edge chip, and CAI. anything else you can think of worth the money for horsepower gain PLEASE give suggestions.

if anyone could help me out i would greatly appreciate it

 

anyone?

 

I have a pair of hi flow magnaflow cats on my truck. Gives it a great deep loud sound when bolted up to my catback flowmaster exhaust. I would love a set of long tube headers but they dont make them for the 4.6. Definitely look into the magnaflow hi flow cats. Only problem is that some times randomly my check engine light comes on to tell me I dont have the original 4 cats that the truck came with but my programmer takes care of that for me.

 

I'm running a Magnaflow cat back with dual side exit in front of the tire on my 05 FX4.. plus tuner and CAI. Zero sensor issues. It's actually relatively quiet until you step on it, at which point it gets a bit loud and mean.

 

Just had my exhaust put it in today! I was dead set on an X pipe setup with true duels using an 11 inch Magnaflow Mufflers. Then at the last minute I was talked into going with the Flowmaster. I am glad I did though. The sound is much better! Just wonder if anyone has opinions on my choice.