High Flow Cats

campo141 · #1 10-28-2009, 11:00 PM

Which part number is the right one to use on my 02 King Ranch Screw (looking to replace all 4 with 2 high flows)....Installing 2.5" original 40 Flowmaster. Also looking for a decent CAI.

Thanx

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DarrenWS6 · #2 10-29-2009, 01:08 AM

S&B makes a great CAI that performs great and is low maintenance. Magnaflow 94306 will work, or 94106 for a near catless sound.

BigBlue5.4 · #3 10-29-2009, 01:16 PM

If you can get your hands on an Air Force 1 (AF1) CAI, the dyno numbers have proven that for our generation trucks (5.4 2V) it is the best CAI. That being said, S&B makes a great intake, and actually AF1 uses S&B filters, so...kind of the best of both worlds. I have an AF1 and love it! It has a very smooth tone, although it isn't heard alot until you hit the 2800-3000 RPM range.

Troyer Performace carries AF1's and claim 17-18 more ponies

Typically the torque numbers are just as high, so... go for it!!

campo141 · #4 10-29-2009, 06:04 PM

Ok, great! I am having alot of trouble locating AF1....Is the correct mag high flow part #94306 the correct part to replace all four cats? (cutting out existing 4 and adding 2) Also, 2.5" is the correct size for my truck, correct?

Also If I supply the 2 cats, the x pipe and the two 40 series flows, my muffler shop told me $490 to install....Sounds kinda high huh?

DarrenWS6 · #5 10-29-2009, 07:13 PM

Quote:

Originally Posted by campo141

Ok, great! I am having alot of trouble locating AF1....Is the correct mag high flow part #94306 the correct part to replace all four cats? (cutting out existing 4 and adding 2) Also, 2.5" is the correct size for my truck, correct?

Also If I supply the 2 cats, the x pipe and the two 40 series flows, my muffler shop told me $490 to install....Sounds kinda high huh?

Does sound a pinch high but i'd pay it since they agreed to remove 4 cats & replace with two. Its very difficult to get a shop to agree to do that, or touch the cats at all actually.