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#1579109 05/26/06 05:34 PM
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Hi guys, if i remove main cat will CEL appear? Will i notice any gain in performance of car?


00 Mystique LS V6 ATX 57K miles K&N air filter TH Fix B&M 70268 Atx cooler
#1579110 05/26/06 06:23 PM
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Originally posted by dgodard:
Hi guys, if i remove main cat will CEL appear? Will i notice any gain in performance of car?




NO and NO.

Gutting the precats will help a little bit, but they will throw a CEL without MIL's


99 TRed Contour SVT # 1853 out of 2760 230.2 WHP @ 6500 237.0 WTR @ 2250
Originally posted by MxRacer:
Originally posted by RawBurt:
I'll be keeping it to myself, until the time comes. It'll be hard to find.


much like your weiner.


#1579111 05/26/06 09:17 PM
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Originally posted by dgodard:
Hi guys, if i remove main cat will CEL appear?




No...but believe me, if/when you remove it, you'll regret it forever b(sounds like total ass). Put a high flow unit in it's plece and you should be ok.

As far a performence, with my test pipe installed the car seems to breath much easier up top, however i have no dyno graps to back this up. I only run my test pipie on track days as I hate the way it makes the car sound.


99 SE V6\5spd - 156 HP\157 TQ 15.166-90.84 Totaled 02/12/06 99 SVT # 1571 - 175 HP\153 TQ 14.999-91.88 Born 3/24/99 Reborn 3/18/06 Pietenpol Racing Technologies project vehicle 90 Festiva L 5spd, Blue(not for long), 103k
#1579112 05/26/06 09:36 PM
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Originally posted by Pole120:
Originally posted by dgodard:
Hi guys, if i remove main cat will CEL appear?




No...but believe me, if/when you remove it, you'll regret it forever b(sounds like total ass). Put a high flow unit in it's plece and you should be ok.

As far a performence, with my test pipe installed the car seems to breath much easier up top, however i have no dyno graps to back this up. I only run my test pipie on track days as I hate the way it makes the car sound.




It doesnt sound that bad... and actually sounds nice after warmed up for 30 seconds of driving... There are a few other CEGers that have heard my exhaust (stock with no main cat)... i admit, it could be better, but its not bad.


~Ryan 1999 T-Red SVT Contour 41k Miles #1701 / 2760 B&M, Custom Y-Pipe, Alpine HU, Pioneer 6x8's & 6x9's
#1579113 05/26/06 10:27 PM
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Originally posted by Guitarman19853:
Originally posted by Pole120:
Originally posted by dgodard:
Hi guys, if i remove main cat will CEL appear?




No...but believe me, if/when you remove it, you'll regret it forever b(sounds like total ass). Put a high flow unit in it's plece and you should be ok.

As far a performence, with my test pipe installed the car seems to breath much easier up top, however i have no dyno graps to back this up. I only run my test pipie on track days as I hate the way it makes the car sound.




It doesnt sound that bad... and actually sounds nice after warmed up for 30 seconds of driving... There are a few other CEGers that have heard my exhaust (stock with no main cat)... i admit, it could be better, but its not bad.




better as in... with a Cat


99 TRed Contour SVT # 1853 out of 2760 230.2 WHP @ 6500 237.0 WTR @ 2250
Originally posted by MxRacer:
Originally posted by RawBurt:
I'll be keeping it to myself, until the time comes. It'll be hard to find.


much like your weiner.


#1579114 05/26/06 10:34 PM
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I have the magnaflow hi-flo cat and I love it. If you want better flo than the stock cat that's the way to go, you could also go with headers or gutted precats , plus w/o the main cat it's easy to catch on a visual inspection and that can equal a fine.


"we aren't punished for our sins, but by them" 2000 se sport tropic green/gray leather. V6,svt body kit and E1 wheels/Avon tech m500 rubber, many mods. 2003 Eddie Bauer Explorer V8 2001 Suzuki Bandit 1200S 1996 Mercury Sable
#1579115 05/26/06 11:27 PM
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dgodard Offline OP
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Thanks by comments guys...well, i think i'll go with headers then...what do you recommend here?? nice and cheap? lol

If i go with headers do i need MIL eliminators?

Last edited by dgodard; 05/26/06 11:28 PM.

00 Mystique LS V6 ATX 57K miles K&N air filter TH Fix B&M 70268 Atx cooler
#1579116 05/26/06 11:35 PM
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Originally posted by Guitarman19853:


It doesnt sound that bad...




Yeah, i love the sound of rasp...


99 SE V6\5spd - 156 HP\157 TQ 15.166-90.84 Totaled 02/12/06 99 SVT # 1571 - 175 HP\153 TQ 14.999-91.88 Born 3/24/99 Reborn 3/18/06 Pietenpol Racing Technologies project vehicle 90 Festiva L 5spd, Blue(not for long), 103k
#1579117 05/26/06 11:41 PM
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Originally posted by Tourige:

better as in... with a Cat




Too quiet with a cat. I'd rather have it be how it is than with a cat.

Originally posted by Pole120:
Originally posted by Guitarman19853:


It doesnt sound that bad...




Yeah, i love the sound of rasp...




Rasp goes away after the engine warms up (usually 30-60 seconds of driving)


~Ryan 1999 T-Red SVT Contour 41k Miles #1701 / 2760 B&M, Custom Y-Pipe, Alpine HU, Pioneer 6x8's & 6x9's
#1579118 05/27/06 02:05 AM
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Originally posted by dgodard:
...If i go with headers do i need MIL eliminators?



Yes. You need two, one for Bank 1 Lower O2 sensor and one for Bank 2 Lower O2 sensor.

If you have to deal with smog emissions inspections (tailpipe), headers are not the way to go as you will probably have a hard time getting the car to pass.


"Always do the cheap and easy ones first." 1996 V6 ATX 96K miles
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