i was searching for the magnaflow highflow cats for a 2001 4.6l and they only had a universal listed, will thses work and give me the high flow performance?

Yeah, but you want the 94306. http://www.troyerperformance.com/cgi...atalogno=94306 Not to put troyer down, but I Found 2 on ebay for $125.

Will a muffler shop in Michigan put the highflows on for me? and what would I tell them, that these two highflow cats replace all of the cats on my truck now?

thanks built 54, do they just put extra pipe and weld together where the other 2 cats were, and do these cats replace at the rear cats and remove the fronts all together or what is the process?

?????

How the hell did you notice more hp and torque? With your ass dyno? Get real here, the ONLY thing you do by cutting off your cats is putting way more crap into the air that you breathe. Thats it.

Yeah if you just cut them off and leave them. My high flows burn cleaner, and gained me 8hp...

Some info from sombody who actually HAS gutted all of their cats:

Performance WILL increase greatly.
Sound will increase greatly.
Gas mileage will increase greatly. (went from 14.5 to 16.2)
CEL will come on. Mine comes on about every 300 miles or so.
And, the exhaust smells like a 70's muscle car :banana:

Sounds like you had blocked cats. Removing working cats will not increase performance or gas mileage "greatly". Removing restricted cats might.

Just put high flows on and get the best of both worlds. High flows can be had for about 65 bucks.

:banana: uh... I mean... :mad:

cel
 

How do you get you check light to come off you said it comes on every 300