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08-29-2014, 03:15 AM
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#1 |
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Go fast, please.
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High flow cats...?
Is it possible to replace only the cats without headers? Are they separate pieces? I was hoping to get a little more sound and possibly a little more power without having to go the tune route...
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08-29-2014, 05:54 AM
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#2 |
 
Join Date: Jul 2014
Posts: 112
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Yes. Most catbacks will directly bolt up to HF cats. Without the need to install any headers.
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08-29-2014, 06:33 AM
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#3 |
          
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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JBA makes a section that connects to the factory manifolds and factory cat back but they aren't that great. It does sound a little better but not worth the hassle. Under extreme conditions, they can fail (as mine did at the road course). The internal media got so hot that it came apart and a large piece was wedged against the second 02 sensor. My advice is if you are going that route to use off road pipes with no cats which unfortunately requires a tune.
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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08-29-2014, 08:37 AM
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#4 |
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I have heard good things about the Solo cats. Once you start upping the boost etc, most Zl1 owners remove their cats as they tend to self-destruct.
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08-29-2014, 10:42 AM
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#5 |
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Going for Plaid
Drives: 2011 C6 Join Date: Jan 2010
Location: Phoenix
Posts: 885
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You don't need a tune with the catless JBA mid pipes. You will just have a check engine light. I just check it occasionally to ensure only the codes for low cat efficiency are what's stored in the ECU.
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2014 ZL1, manual trans, carbon hood insert, Rotofab, Pacesetter 1 7/8" headers, 1" drop BMR springs, stock pulleys, 91 octane tune, 545rwhp & 515rwtq
Serviced and modded by Cordes Performance. 2011 C6, 750rwhp, forged LS3, ported LSA heads, Vortech Ti-trim, 227/243 115+4 Lunati cam, ported LS3 intake, Alky Control methanol, Pfadt sways/shocks/trans mounts, Pfadt tri-y headers(Sold 6/28/14) |
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08-29-2014, 11:26 AM
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#6 |
Drives: 2013 ZL1 Join Date: Oct 2011
Location: tangent or
Posts: 2,984
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solo and JBA have them. I have seen people burn both of them up as well though.
to me the best way to do this is JBA off road pipes $200 and live with the CEL car is going to run fine. or run a more aggresive catback. a corsa and borla catback (stinger or attack) it going to give you more sound without the fear of burned up cats. if the car is too loud with the off road pipes there is a 2 second way to just wire the flapps closed at all time so you can run the NPP in stock and closed vs open and stock.
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shopping for 2017+1le or zl1
2009 CTS-V -sold 2015 Hellcat-sold 2013 ZL1 -sold 2007 Z06- sold 2014 Chrysler 300 2011 Duramax 8" lift, deleted tuned |
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08-29-2014, 03:24 PM
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#7 | |
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Go fast, please.
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Quote:
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08-29-2014, 03:27 PM
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#8 | |
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Going for Plaid
Drives: 2011 C6 Join Date: Jan 2010
Location: Phoenix
Posts: 885
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Quote:
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2014 ZL1, manual trans, carbon hood insert, Rotofab, Pacesetter 1 7/8" headers, 1" drop BMR springs, stock pulleys, 91 octane tune, 545rwhp & 515rwtq
Serviced and modded by Cordes Performance. 2011 C6, 750rwhp, forged LS3, ported LSA heads, Vortech Ti-trim, 227/243 115+4 Lunati cam, ported LS3 intake, Alky Control methanol, Pfadt sways/shocks/trans mounts, Pfadt tri-y headers(Sold 6/28/14) |
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08-29-2014, 03:28 PM
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#9 |
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Going for Plaid
Drives: 2011 C6 Join Date: Jan 2010
Location: Phoenix
Posts: 885
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Side benefit is it sounds awesome now!
__________________
2014 ZL1, manual trans, carbon hood insert, Rotofab, Pacesetter 1 7/8" headers, 1" drop BMR springs, stock pulleys, 91 octane tune, 545rwhp & 515rwtq
Serviced and modded by Cordes Performance. 2011 C6, 750rwhp, forged LS3, ported LSA heads, Vortech Ti-trim, 227/243 115+4 Lunati cam, ported LS3 intake, Alky Control methanol, Pfadt sways/shocks/trans mounts, Pfadt tri-y headers(Sold 6/28/14) |
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08-29-2014, 04:11 PM
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#10 | |
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Drives: 2013 ZL1 Join Date: Oct 2011
Location: tangent or
Posts: 2,984
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Quote:
I would think something like 5hp or so. 10 tops I would think. there may be some shift in the power band. it is realy just the cheapest way to get your car to sound agressive. the stock catback with no cats and the flaps close sound better than the fuse pulled by far. then you go stock settign and it gets pretty lound an aggresive. fuse pulled and it will just be really loud. you can wire a 3 position switch into the gound pin of the exhasut flap relay and have open/stock/closed as well.
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shopping for 2017+1le or zl1
2009 CTS-V -sold 2015 Hellcat-sold 2013 ZL1 -sold 2007 Z06- sold 2014 Chrysler 300 2011 Duramax 8" lift, deleted tuned |
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08-29-2014, 04:52 PM
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#11 |
Drives: 2015 SS Sedan M6 Join Date: Dec 2009
Location: Dallas, TX
Posts: 1,086
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keep in mind once you start adding more power later on if you do, you'll need to ditch the cats all together. And if im not mistaken, most people here will agree that aftermarket hi flow cats are not as robust as the oem cats.
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08-30-2014, 08:10 PM
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#12 |
 
Drives: 2012 ZL1 Black Join Date: Aug 2014
Location: missouri
Posts: 24
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Just bought JBA high flow mids and going to cut them in half. Remove internals and reweld ,so if it gets a visual inspection it has cats.
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