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03-29-2017, 02:57 PM
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#1 |
 
Drives: 2016 Camaro SS Join Date: Aug 2016
Location: Dayton, TX
Posts: 81
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Cats or no cats
I ordered catless kooks 1 7/8 LT headers months ago and still haven't got them. I was told that I could continue waiting or that he could ship me the catted version that he had on hand. My question is that with an X pipe connecting to the stock NPP exhaust and no cats will it be too raspy? Should I continue waiting or go with the catted version and add the x pipe still?
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03-29-2017, 03:32 PM
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#2 |
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Markoon13
Drives: Camaro 2SS Join Date: Oct 2016
Location: San Diego
Posts: 853
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wait for the catless... It will be worth it rather than being impatient lol
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03-29-2017, 04:01 PM
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#3 |
          Drives: SS 6 speed of course Join Date: Jan 2016
Location: Hilo, HI
Posts: 4,346
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I'm catless, but as soon as the tune is finished I'll put cats in. It is raspy at low engine RPM and high gear say 6th gear at 68 MPH, 4th gear below 40 MPH, if you down shift no issues really. I'd rather run cats for environmental issues and it is the law; might not have local enforcement but I do know people that visit CA and get their car impounded....
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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03-29-2017, 04:47 PM
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#4 |
Drives: 2019 ZL-1 Join Date: Feb 2009
Location: Troy, MI & Naples, FL
Posts: 2,018
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Put cats on, really its required by the law and the loss in hp is negligible.
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2019 ZL-1 Acquired 4/23/21 at 6300 miles. Riverside Blue, A10, PDR. Traded in 2017 2SS with 6M and 32k miles. Continental Extreme Contact Sports. Now has 10,000 miles...
2012 Yukon XL Denali w/ 6.2 AWD |
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03-30-2017, 07:09 AM
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#5 |
 
Drives: a M6 LT1 ordered From Becky!!! Join Date: Jan 2010
Location: NJ
Posts: 7,520
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This ^^. Be a responsible member of this world and get cats. There is more rasp without them and since they flow so well you are not gaining anything noticable by going without them.
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"Democracy Dies in Darkness" |
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03-30-2017, 09:50 AM
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#6 |
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Drives: 1987 Z28, 385cid, '16 Camaro 1SS Join Date: Feb 2016
Location: Maryland
Posts: 523
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Haha, whatever, wait for the cat-less
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02/23/16: 1100, 03/16/16: 2500 # TGHR6N
03/16/16: 2500, 03/18/16: 3000 TPW : 4/11/16 04/8/16: built & VIN 04/11/16 - 04/28/26 : 4B00 Bayed QC hold, 04/29/16 : 4200 Rail yard '16 1SS 6M, black with jet black interior, split spoke gray machined faced wheels, and black front/rear bowtie emblems. |
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03-30-2017, 10:43 AM
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#7 |
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Drives: 2021 Tesla Model 3 LR Join Date: May 2016
Location: USA
Posts: 1,019
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You're also not the only one having to deal with the smell of fuel due to going catless. You're driving on public roads and drivers around you have to put up with that horrible smell just for you to gain what 5-10 HP?
Go with cats for legality, environmental, and being a considerate person on public roads so we don't have to put up with fuel fumes coming out of your car. |
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03-30-2017, 10:52 AM
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#8 |
Drives: 2016 Camaro SS Join Date: Oct 2016
Location: Mount Dora, FL
Posts: 792
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Cats aren't going to limit the power to any appreciable degree.
Tim |
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03-30-2017, 11:01 AM
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#9 |
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Drives: Black SS 1LE Join Date: Mar 2017
Location: South Carolina
Posts: 63
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Yes, for more sound and minimal hp gain
No, to be green and legal 
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03-30-2017, 11:09 AM
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#10 |
Drives: '17 Red hot 2ss, 16 Focus RS Join Date: Aug 2015
Location: Michigan
Posts: 845
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Pm sent
Last edited by Dubchitts; 03-30-2017 at 11:55 AM. |
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03-30-2017, 12:01 PM
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#11 |
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Account Suspended
Drives: C7 Z06 manual, 18 Zl1 manual, etc Join Date: Dec 2013
Location: Spring Texas
Posts: 1,488
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I went catless! Anther vote for catless
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03-30-2017, 12:20 PM
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#12 | |
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Drives: SS 6 speed of course Join Date: Jan 2016
Location: Hilo, HI
Posts: 4,346
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Quote:
amen bro, and it is only 1 to 3 HP IMO. My car smells slightly like Vodka..
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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03-30-2017, 01:37 PM
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#13 | |
 
Drives: 2016 Camaro 2SS Red Hot Join Date: Dec 2014
Location: San Fernando Valley, CA
Posts: 476
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Quote:
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1989 Iroc-Z Z28 1LE/HP (Sold)
2010 2SS Rally Yellow: Corsa/Vararam (Sold) Current: 2016 Camaro 2SS Red Hot Current: 2016 Tahoe LT Current: 2018 Mini Countryman S  |
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03-30-2017, 01:43 PM
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#14 |
Drives: 2015 Tiger XCX,2016 Camaro 1SS,LBZ! Join Date: Sep 2015
Location: Palm Coast, FL
Posts: 1,311
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All of the dyno sessions testing cats that I have seen you gain a couple hp up top but lose tq in the mid range which is more important for a street car. I live in Florida where it does not get tested. I have an uncle that cuts every cat out of his exhaust because of old school thinking. No reason to cut them out any more. Might as well take the green and law abiding route for this reason.
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