alright yall so im finally gonna get some hi flow cats! im very excited. but first im trying to find someone to delete/take off my pre cats. and i need help lol. what do i need to say to the muffler guy??? i just want pipe welded in the pre cats place or what??? and i just got off the phone with a shop and he told me that it matters on where the O2 sensors are on the pre cats or something like that. can someone please clarify this stuff.
thanks
hector

 

I know that the pre-cats sensor is before them a few, there is no O2 sensor mounted onto the pre-cat so it should be good to remove it.

And I wouldn't go to a shop asking to remove the pre-cat, the right term to use is Resonator

 

When I did mine I just took the high flow cats to the shop and said I need these installed. Please take out the four cats and install my two high flows. Job done in about an 1 hr 15 min.

 

How did it run after that? Could you really feel a difference with the high flow cats?

 

Mine ran like chit until I replaced the front 2 O2 sensors now she runs great but the CEL is on because it runs lean. They say the only way to get the light off is o2 simulator which I aint spending the money on.

 

When I did mine I had no problems at all. I think they have been on my truck for like 6 months and I love them. You will not notice a big gain in performance but you will notice the sound of the truck is 10 times better than stock. I would say that the truck runs stronger on the topend now with the high flows. When you do them make sure you reset your computer.

 

so i finally installed em today. i was so anxious because i was scared because of what happened to fordtruckin lol... but man its LOUD!!!! No CEL or nothing. Same setup as fordtruckin too. man its sweet! i tried to get a sound cluip with my digital camera but its so loud that it sounds like **** on it. guess i need a camcorder or somethin. thanks for the advice fellas.

 

Glad to hear you like them, Best mod done to the exhaust.

 

hey whats up andy jr. what setup did u do with the hi flo cats???

 

I removed all four cats and then installed the two high flows. I have the two high flow cats (94306) going to a SI/DO Magnaflow muffler (12198) and then exits behind each tire with a 3.5" tip. Is that what you wanted to know?

 

Your truck sounds Awsome Andy-jr.

 

yea thats what i wanted to know. just wondering. im ttrying to get a sound clip of it but none of my damn friends have camcorders lol.

 

Look for a family member that has kids, they will have a video camera.

 

andy what series maggie muffler do you have?

 

The part number for the muffler is 12198 and the highflows are 94306