2 cats or no cats?

xtreme 2 · January 11th, 2012, 09:37 AM

Opinions? Thinking about having the rears lopped off and straight piped, but in a debate on having the front ones removed.

Current set-up is stock manifolds, stock mid-pipe with H adapter, and Borla ProXS Muffers. Sounds good inside the car, but really quiet outside the car until you are at WOT. Doesn't ever get raspy though which is what I like. Get complements from other V6 owners and even some GT.

Have never run catless on any of my cars. I know taking off the rears will open it up some, but when it comes to the front, should I keep the stockers, switch to hi-flows, or delete them all together?

thomasdale2144 · January 11th, 2012, 10:54 AM

i am also thinking of cutting out my front cats, so I'm interested to hear what others have to say

6ixer · January 11th, 2012, 11:45 AM

Well this isn't going to help I'm just gunna add on....I want to chop of the back two cats and put two hi flows in places of the fronts but the problem is my rear cats have a sensor going to them so how do I deal witht tht

xtreme 2 · January 11th, 2012, 11:50 AM

should just be the rear o2s. delete them in your tune and you are good to go.

dgt_mustang · January 11th, 2012, 11:57 AM

Delete Cats.
My First setup - Mac Longtube Headers - Hi-flow cats by magnaflow - Flowmaster 40 mufflers,dualed
My Second Setup - Mac Longtube Headers - No Cats - Flowmaster 40 mufflers,dualed

I'm a fan of the second setup now that i know what it sounded like in person on my own car.

xtreme 2 · January 11th, 2012, 12:01 PM

yea I want longtubes. Main reason I was to just delete mine and not get a new H-Pipe or invest in high flow cats. May just do the rears to start, and if it's still pretty quiet I'll do the fronts.

SlowSix · January 11th, 2012, 12:21 PM

Longtubes and be done with it. don't bother wasting your time lopping off cats, just get longtubes and the matching o/r H.

xtreme 2 · January 11th, 2012, 12:30 PM

$10 pipe versus $400 exhaust. lol

SlowSix · January 11th, 2012, 12:41 PM

I mean I guess so. This is just coming from me who has had like 3 different exhaust setups haha

6ER THEN I 8ER! · January 11th, 2012, 01:45 PM

Originally Posted by xtreme 2

$10 pipe versus $400 exhaust. lol

you get what you pay for a lot of times...if you want to just hear an o/r h pipe on stock manifolds look for Marks red v6 in the exhaust clip section..

xtreme 2 · January 11th, 2012, 01:49 PM

ultimately I will get the LTs, just wanting a little louder for now. I also just found a pro chamber locally for $150 obo. but after modifying it to fit I am 2/3 the way to LTs...

6ixer · January 11th, 2012, 02:22 PM

Well honestly my only choice is hi flow cats or stock or bust cuz ny emmissions blow more then a 5 dollar hooker

xtreme 2 · January 11th, 2012, 02:25 PM

no emissions in Oklahoma...

SON1C · January 11th, 2012, 04:14 PM

yeah mrksd3 has the front cats on rears off

just so you know with loud chambered mufflers a catless setup is going to be loud. as fuck. i have no experience with hi flow cats but i know theyre an additional 80-200 a pair before install, all that shit adds up quick

if you really want sound improvement get a lumpy cam

xtreme 2 · January 11th, 2012, 04:18 PM

I have the cam in my sig that I will be installing as soon as I get the heads finished.

I am currently running Borla ProXS mufflers.

6ixer · January 11th, 2012, 05:08 PM

Slp high flow cats are sold as a pair for 149 I can do the work my self plus w/e else

January 11th, 2012, 09:37 AM	#1
xtreme 2 Hardcore Enthusiast 2001 v6 premium Join Date: Nov 2008 Location: Tulsa, OK Posts: 1,340 Blog Entries: 1 iTrader: 0 reviews	2 cats or no cats? Opinions? Thinking about having the rears lopped off and straight piped, but in a debate on having the front ones removed. Current set-up is stock manifolds, stock mid-pipe with H adapter, and Borla ProXS Muffers. Sounds good inside the car, but really quiet outside the car until you are at WOT. Doesn't ever get raspy though which is what I like. Get complements from other V6 owners and even some GT. Have never run catless on any of my cars. I know taking off the rears will open it up some, but when it comes to the front, should I keep the stockers, switch to hi-flows, or delete them all together? __________________ Screw it, coming to play with the big boys... 5.4L Vortech COMING SOON!

January 11th, 2012, 10:54 AM	#2
thomasdale2144 Enthusiast 96 GT with 97 cobra swap 13.65@101.3 Join Date: Sep 2010 Location: Plymouth, MN Posts: 684 iTrader: 0 reviews	i am also thinking of cutting out my front cats, so I'm interested to hear what others have to say __________________ 1999 V6 CAI, Tune (Sold) 1996 GT Vert 97 Cobra Engine Swap, Mods in Garage 248.8 RWHP, 353.3RWTQ But having a 4V makes it a Cobra Want to join the FOBRA club? MM FOBRA CLUB FOUNDER

January 11th, 2012, 11:45 AM	#3
6ixer Hardcore Enthusiast 2000 mustang v6 14.6@99.68 Join Date: Apr 2010 Location: east greenbush, ny Posts: 1,567 Blog Entries: 3 iTrader: 0 reviews	Well this isn't going to help I'm just gunna add on....I want to chop of the back two cats and put two hi flows in places of the fronts but the problem is my rear cats have a sensor going to them so how do I deal witht tht __________________ Ported heads, comp cams cam, AM CAI, posi'd rear with 3.73 gears, flowmaster exhaust Fixed clutch!!!!! "My mustang likes a good ol' fashion bowl of rice....especially fried"

January 11th, 2012, 11:50 AM	#4
xtreme 2 Hardcore Enthusiast 2001 v6 premium Join Date: Nov 2008 Location: Tulsa, OK Posts: 1,340 Blog Entries: 1 iTrader: 0 reviews	should just be the rear o2s. delete them in your tune and you are good to go. __________________ Screw it, coming to play with the big boys... 5.4L Vortech COMING SOON!

January 11th, 2012, 12:01 PM	#6
xtreme 2 Hardcore Enthusiast 2001 v6 premium Join Date: Nov 2008 Location: Tulsa, OK Posts: 1,340 Blog Entries: 1 iTrader: 0 reviews	yea I want longtubes. Main reason I was to just delete mine and not get a new H-Pipe or invest in high flow cats. May just do the rears to start, and if it's still pretty quiet I'll do the fronts. __________________ Screw it, coming to play with the big boys... 5.4L Vortech COMING SOON!

January 11th, 2012, 12:21 PM	#7
SlowSix Formerly 01silversixer 2001 V6 15.47@89.57 Join Date: May 2010 Location: Pittsburgh, PA Posts: 3,471 iTrader: 1 reviews	Longtubes and be done with it. don't bother wasting your time lopping off cats, just get longtubes and the matching o/r H. __________________ Build Thread

January 11th, 2012, 12:30 PM	#8
xtreme 2 Hardcore Enthusiast 2001 v6 premium Join Date: Nov 2008 Location: Tulsa, OK Posts: 1,340 Blog Entries: 1 iTrader: 0 reviews	$10 pipe versus $400 exhaust. lol __________________ Screw it, coming to play with the big boys... 5.4L Vortech COMING SOON!

January 11th, 2012, 12:41 PM	#9
SlowSix Formerly 01silversixer 2001 V6 15.47@89.57 Join Date: May 2010 Location: Pittsburgh, PA Posts: 3,471 iTrader: 1 reviews	I mean I guess so. This is just coming from me who has had like 3 different exhaust setups haha __________________ Build Thread

January 11th, 2012, 01:49 PM	#11
xtreme 2 Hardcore Enthusiast 2001 v6 premium Join Date: Nov 2008 Location: Tulsa, OK Posts: 1,340 Blog Entries: 1 iTrader: 0 reviews	ultimately I will get the LTs, just wanting a little louder for now. I also just found a pro chamber locally for $150 obo. but after modifying it to fit I am 2/3 the way to LTs... __________________ Screw it, coming to play with the big boys... 5.4L Vortech COMING SOON!

January 11th, 2012, 02:22 PM	#12
6ixer Hardcore Enthusiast 2000 mustang v6 14.6@99.68 Join Date: Apr 2010 Location: east greenbush, ny Posts: 1,567 Blog Entries: 3 iTrader: 0 reviews	Well honestly my only choice is hi flow cats or stock or bust cuz ny emmissions blow more then a 5 dollar hooker __________________ Ported heads, comp cams cam, AM CAI, posi'd rear with 3.73 gears, flowmaster exhaust Fixed clutch!!!!! "My mustang likes a good ol' fashion bowl of rice....especially fried"

January 11th, 2012, 02:25 PM	#13
xtreme 2 Hardcore Enthusiast 2001 v6 premium Join Date: Nov 2008 Location: Tulsa, OK Posts: 1,340 Blog Entries: 1 iTrader: 0 reviews	no emissions in Oklahoma... __________________ Screw it, coming to play with the big boys... 5.4L Vortech COMING SOON!

January 11th, 2012, 04:14 PM	#14
SON1C Run ur car, not ur mouth. 2003 Sonic Blue 4.6L Join Date: Jul 2010 Location: Northern Virginia Posts: 4,057 Blog Entries: 1 iTrader: 3 reviews	yeah mrksd3 has the front cats on rears off just so you know with loud chambered mufflers a catless setup is going to be loud. as fuck. i have no experience with hi flow cats but i know theyre an additional 80-200 a pair before install, all that shit adds up quick if you really want sound improvement get a lumpy cam __________________ 238rwhp/263rwtq Drew's Build Thread

January 11th, 2012, 04:18 PM	#15
xtreme 2 Hardcore Enthusiast 2001 v6 premium Join Date: Nov 2008 Location: Tulsa, OK Posts: 1,340 Blog Entries: 1 iTrader: 0 reviews	I have the cam in my sig that I will be installing as soon as I get the heads finished. I am currently running Borla ProXS mufflers. __________________ Screw it, coming to play with the big boys... 5.4L Vortech COMING SOON!

January 11th, 2012, 05:08 PM	#16
6ixer Hardcore Enthusiast 2000 mustang v6 14.6@99.68 Join Date: Apr 2010 Location: east greenbush, ny Posts: 1,567 Blog Entries: 3 iTrader: 0 reviews	Slp high flow cats are sold as a pair for 149 I can do the work my self plus w/e else __________________ Ported heads, comp cams cam, AM CAI, posi'd rear with 3.73 gears, flowmaster exhaust Fixed clutch!!!!! "My mustang likes a good ol' fashion bowl of rice....especially fried"

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