cats or o/r x pipe, roumors

carsmart28 · November 3rd, 2009, 03:55 PM

if you take off your cats and make your pipes and off road, i heard that it would reduce power and wil make your car run like shit, so is it better to actuly do high flow cats or stick to off road??? whats the pros and cons

DRock · November 3rd, 2009, 03:57 PM

Your in California its illegal and you wont pass smog......................

NastyStang113 · November 3rd, 2009, 04:59 PM

Like DRock said, I wouldn't do it in CA. It's not going to decrease power or make your car run like shit. It's worth about 5 rwhp and a good sound.

fullboogie · November 3rd, 2009, 05:04 PM

It does sound gooood...

SoCalGT2005 · November 3rd, 2009, 05:40 PM

there's lots of people in CA that run test pipes, just a big risk... $2,000 ticket if you're caught with non-factory cats (even hi-flows), and you would have to put the stock midpipe back in before getting SMOG'd. It's all up to you, just remember if you're getting pulled over, kill the engine as soon as you stop so theres less of a chance of the cop smelling your exhaust when he/she walks up to your car.

MustanG_guy17 · November 4th, 2009, 01:36 AM

Originally Posted by SoCalGT2005

there's lots of people in CA that run test pipes, just a big risk... $2,000 ticket if you're caught with non-factory cats (even hi-flows), and you would have to put the stock midpipe back in before getting SMOG'd. It's all up to you, just remember if you're getting pulled over, kill the engine as soon as you stop so theres less of a chance of the cop smelling your exhaust when he/she walks up to your car.

or kill the engine before u come to a stop and coast for a little bit.

SoCalGT2005 · November 4th, 2009, 01:45 AM

Originally Posted by MustanG_guy17

or kill the engine before u come to a stop and coast for a little bit.

yea but that could be pretty noticeable if the car is loud

UrbanRedneck · November 4th, 2009, 06:26 PM

I haven't had cats for the last 16,000 miles and the car runs great. Runs low 13s on street tires anyway. But, I wouldn't do it in california, just to much shit to worry about.

carsmart28 · November 4th, 2009, 09:57 PM

i also heard that you would have to pre tune your engin due to the engine runs off the sensors in the cats.. blah blah blah, idk my friend said this and i was just courious cuz he knows a lot about cars. im awear of all the riskes, but O/R is soooooo much cheaper and i love the sound

08fordgt · November 4th, 2009, 10:58 PM

thats why you get the tune to go with the o/r pipe cuz ur o2 sensors will be reading the same thing and throw a code.

DRock · November 5th, 2009, 12:19 AM

Originally Posted by carsmart28

i also heard that you would have to pre tune your engin due to the engine runs off the sensors in the cats.. blah blah blah, idk my friend said this and i was just courious cuz he knows a lot about cars. im awear of all the riskes, but O/R is soooooo much cheaper and i love the sound

It might be cheaper now but lets say what the pypes O/R X pipe is what $179.99 at Brenspeed? Yea good price ok, but when you get caught that cheap $180 part just became an expensive $2180.00 dollar part........just a thought

ethrjock · November 5th, 2009, 12:25 AM

keep in mind if you are in a state that requires emisson testing and you think with a programmer you can turn off your rear o2 sensors...think again. the emissons tester checks for that as part of his diagnostics.

some custom tuners can keep the o2s on yet create a tune that will not kick the CEL on when running a off road pipe.

I have a off road x. One thing worth noting....the of road X pipes are very raspy. I woud like to find someone with a off road H wanting to trade.

carsmart28 · November 5th, 2009, 12:25 AM

Originally Posted by DRock

It might be cheaper now but lets say what the pypes O/R X pipe is what $179.99 at Brenspeed? Yea good price ok, but when you get caught that cheap $180 part just became an expensive $2180.00 dollar part........just a thought

very good point hahah

DRock · November 5th, 2009, 01:25 AM

just get a splice in X or something so there is no rasp and your more than legal

Youngin · November 5th, 2009, 02:31 AM

i am gonna try it since my mid pipe came with delete tubes.. and you have what.. 2 more years until smog.. your good and cops will only stop you if you drive like an asshole.. as long as your driving nice and legal they wont give you shit..

Youngin · November 5th, 2009, 02:32 AM

Originally Posted by DRock

It might be cheaper now but lets say what the pypes O/R X pipe is what $179.99 at Brenspeed? Yea good price ok, but when you get caught that cheap $180 part just became an expensive $2180.00 dollar part........just a thought

its not 1000$ / per cat... and you will get state ref.t so all you have to do is put your stockers back on and go get inspected.. although when they inspect you for that theyll inspect you for everything else too

UrbanRedneck · November 7th, 2009, 01:33 AM

Originally Posted by carsmart28

i also heard that you would have to pre tune your engin due to the engine runs off the sensors in the cats.. blah blah blah, idk my friend said this and i was just courious cuz he knows a lot about cars. im awear of all the riskes, but O/R is soooooo much cheaper and i love the sound

He's wrong but kinda right. The engine does not run off the post cat o2 sensors (the ones in the cats). Nor do those sensors have any effect on drivability at all. The primary o2s are used for fuel control, and a problem with them can cause drivability issues. The secondary o2s are only used to monitor catalyst efficiency. So without cats you will get a check engine light with codes P0420 and probably P0421 for banks 1 and 2 catalyst efficiency below threshold, but there will be no driving problem. The tune is used to turn off the MIL for you, just so you don't have to look at it. Most tunes you will see that do this will still not pass the OBD2 monitor test because it disables the o2, o2 heater, and cat monitors. Tuners can make tunes that will force the monitors to pass, but good luck getting one to do it.

NastyStang113 · November 7th, 2009, 01:38 AM

Originally Posted by Youngin

i am gonna try it since my mid pipe came with delete tubes.. and you have what.. 2 more years until smog.. your good and cops will only stop you if you drive like an asshole.. as long as your driving nice and legal they wont give you shit..

I thought you got pulled over in your V6 for no reason only because it was blacked out before.

Originally Posted by UrbanRedneck

Tuners can make tunes that will force the monitors to pass, but good luck getting one to do it.

Honestly, I've never heard of a tuner not working with you to pass smog.

cale2006 · November 7th, 2009, 11:49 PM

Honestly do what you want. I got the O/R X pipe and have loved it ever since. When I have an emmisions test I just switch out the pipe and call it a day(after retuning). Bottom line...you want it just get it. Life is too short to worry about every little detail.

UrbanRedneck · November 8th, 2009, 12:29 PM

Nasty, on my car the way it is with the brenspeed tune, it would fail an IL emmisions test becasue 3 monitors won't run. But on my brothers LS1 his was tuned by a local guy we knew (he died recently) and has the monitors all passed, despite having no cats, EGR, smog pump, etc. I have been told that an S197 can be tuned that way as well, but you pretty much have to know the tuner to do it. I asked VMP about it, and I forgot what he said but I think it was to the effect of not being able to do it, or at leat not being willing to.

November 3rd, 2009, 03:55 PM	#1
carsmart28 Regular 2006 Mustang GT good enough Join Date: Aug 2009 Location: Southern California Posts: 59	cats or o/r x pipe, roumors if you take off your cats and make your pipes and off road, i heard that it would reduce power and wil make your car run like shit, so is it better to actuly do high flow cats or stick to off road??? whats the pros and cons __________________

November 3rd, 2009, 03:57 PM	#2
DRock Regular 2009 Mustang GT/CS N/A Join Date: May 2009 Posts: 339	Your in California its illegal and you wont pass smog...................... __________________ '09 GT/CS Flowmaster 40's GT500 Spoiler Black Turn Signals 5k Headlight & Fog HID's

November 3rd, 2009, 04:59 PM	#3
NastyStang113 MM Fanatic 2008 Mustang GT 11.87@119 Join Date: Jan 2009 Location: Florida Posts: 3,722	Like DRock said, I wouldn't do it in CA. It's not going to decrease power or make your car run like shit. It's worth about 5 rwhp and a good sound. __________________ VMP Tuning tuned Roush TVS - 524 rwhp 501 rwtq \| Under Construction \|

November 3rd, 2009, 05:04 PM	#4
fullboogie Regular 2008 GT Join Date: Jun 2008 Location: Houston Posts: 429	It does sound gooood... __________________ Catless H JLT Magnaflows 4.10's Shelby 18x9's and 18x10's BMR stuff Fuel Altereds Rule The Earth

November 3rd, 2009, 05:40 PM	#5
SoCalGT2005 Regular 2005 Mustang GT Join Date: Sep 2009 Location: Tempe, AZ (ASU) Posts: 76	there's lots of people in CA that run test pipes, just a big risk... $2,000 ticket if you're caught with non-factory cats (even hi-flows), and you would have to put the stock midpipe back in before getting SMOG'd. It's all up to you, just remember if you're getting pulled over, kill the engine as soon as you stop so theres less of a chance of the cop smelling your exhaust when he/she walks up to your car. __________________ 2005 Windveil GT >> ROUSH CAI, FRPP Stingers, Silverhorse Blackout Panel, Brushed "Aluminum" Dash Kit, chrome American Racing ROGUE wheels 20x8.5 with 255/35/20 Yokohama S.Drive tires, ROUSH rear springs

Sponsored Links	Remove Advertisements
Forums at Modded Mustangs Advertisement

November 4th, 2009, 06:26 PM	#8
UrbanRedneck Hardcore Enthusiast 2008 Mustang GT 13.124@105.52 Join Date: May 2008 Location: Chicago Posts: 1,300	I haven't had cats for the last 16,000 miles and the car runs great. Runs low 13s on street tires anyway. But, I wouldn't do it in california, just to much shit to worry about. __________________ Hurst Crew Member #20 2008 GT - Mac, C&L, Hurst, BORLA, BMR, Bilstein, FRPP. Awesome.

November 4th, 2009, 09:57 PM	#9
carsmart28 Regular 2006 Mustang GT good enough Join Date: Aug 2009 Location: Southern California Posts: 59	i also heard that you would have to pre tune your engin due to the engine runs off the sensors in the cats.. blah blah blah, idk my friend said this and i was just courious cuz he knows a lot about cars. im awear of all the riskes, but O/R is soooooo much cheaper and i love the sound __________________

November 4th, 2009, 10:58 PM	#10
08fordgt Regular 2008 mustang gt Join Date: Oct 2008 Location: Tampa FL, macdill AFB Posts: 116	thats why you get the tune to go with the o/r pipe cuz ur o2 sensors will be reading the same thing and throw a code. __________________ JLT cai, SCT3, bamachips, Steeda UDPs, Hurst, Pypes O/R & mufflers, Steeda blue lca,& relocation brackets, edlebrock adj. uca, adj. panhard brace and bar,sportlines, cmdp

November 5th, 2009, 12:25 AM	#12
ethrjock Newbie 2006 11.82@118 Join Date: May 2008 Location: Douglasville, Ga Posts: 32	keep in mind if you are in a state that requires emisson testing and you think with a programmer you can turn off your rear o2 sensors...think again. the emissons tester checks for that as part of his diagnostics. some custom tuners can keep the o2s on yet create a tune that will not kick the CEL on when running a off road pipe. I have a off road x. One thing worth noting....the of road X pipes are very raspy. I woud like to find someone with a off road H wanting to trade. __________________ 06 Paxton HO, 60lb Inj, GT500 pump, 3.16 pulley, BMR LCA Panard Drop Bkt, FRPP spgs, Basssani exhaust, Off X, SLP LLck, 4.10 gear, Weld RT 15x10 rear, 4" ft-MT 28.1 x 12" rear (PB 11.82:1.62 60 ft on 10-25-09 at SDR) Paxton/Vortech Crew Member #4

November 5th, 2009, 01:25 AM	#14
DRock Regular 2009 Mustang GT/CS N/A Join Date: May 2009 Posts: 339	just get a splice in X or something so there is no rasp and your more than legal __________________ '09 GT/CS Flowmaster 40's GT500 Spoiler Black Turn Signals 5k Headlight & Fog HID's

November 5th, 2009, 02:31 AM	#15
Youngin Hip Hop Artist Byebye V6~ Welcome Home New Pony :P Join Date: Nov 2006 Location: Californ-i-A Posts: 5,541	i am gonna try it since my mid pipe came with delete tubes.. and you have what.. 2 more years until smog.. your good and cops will only stop you if you drive like an asshole.. as long as your driving nice and legal they wont give you shit.. __________________ ItaliStang Made.. Maybe Red But Makes One Hell Of A Sig http://www.myspace.com/moddedmustangz Modded Mustang's Song http://i30.tinypic.com/2en6byt.jpg

November 7th, 2009, 11:49 PM	#19
cale2006 Regular 2006 Mustang GT Join Date: Oct 2009 Location: Sterling, VA Posts: 53	Honestly do what you want. I got the O/R X pipe and have loved it ever since. When I have an emmisions test I just switch out the pipe and call it a day(after retuning). Bottom line...you want it just get it. Life is too short to worry about every little detail. __________________ Steeda carbon CAI, Steeda UDP, SCT 93 tune, MSD ignition coils, O/R X pipe, Borla catback exhaust, Tokico D-spec shocks, Eibach sportline springs, Steeda Camber Adjusters, Invo tires

November 8th, 2009, 12:29 PM	#20
UrbanRedneck Hardcore Enthusiast 2008 Mustang GT 13.124@105.52 Join Date: May 2008 Location: Chicago Posts: 1,300	Nasty, on my car the way it is with the brenspeed tune, it would fail an IL emmisions test becasue 3 monitors won't run. But on my brothers LS1 his was tuned by a local guy we knew (he died recently) and has the monitors all passed, despite having no cats, EGR, smog pump, etc. I have been told that an S197 can be tuned that way as well, but you pretty much have to know the tuner to do it. I asked VMP about it, and I forgot what he said but I think it was to the effect of not being able to do it, or at leat not being willing to. __________________ Hurst Crew Member #20 2008 GT - Mac, C&L, Hurst, BORLA, BMR, Bilstein, FRPP. Awesome.

Threads Similar to: cats or o/r x pipe, roumors
Thread	Thread Starter	Forum	Replies	Last Post
x pipe... cats, no cats, etc	A5295	5.0 Mustangs	7	January 18th, 2009 02:49 PM
X pipe with no cats	Seabee	99-04	13	June 12th, 2008 12:10 AM
V6 y pipe with cats...	Beejkonk	Exhaust	0	May 15th, 2008 06:14 PM
H - Pipe Or X - Pipe With Cats? Which Brand For Price?	dave07GT	2005+	13	December 11th, 2007 12:59 PM
WT: X pipe or H Pipe with high flow cats	cobralini	Trade	2	October 19th, 2006 01:28 AM

All times are GMT -4. The time now is 10:10 PM.
Contact Us - Modded Mustangs - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2009, Jelsoft Ent. Ltd. & SEO by vBSEO 3.1.0 ©2007, Crawlability, Inc.