Cats vs catless track results

Discussion on fuel delivery & intake/exhaust tech & mods.
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Numbah1
Posts: 75
Joined: Mon Jan 28, 2019 3:45 am

Cats vs catless track results

Post by Numbah1 » Wed May 12, 2021 10:18 am

So i bought jba catless pipes for a few reasons,
1) a laugh at the rpm act
2) louder, and it is at idle
3) g8 board said itll lower my ET....

Drove it 55 miles there with catted pipes on. Let the car cool off for 75 minutes to start my 1st of 3 runs with a 40 minute break after after each, averaged 13.32

Took an hr to switch to catless b.c i had to clamp them to fit the x pipe. Ran 3 more with 40 in between each run... averaged 13.30 lololol

cars full bolt on, no engine tune - just cat sensor delete in the settings

Turbopowered68
Posts: 121
Joined: Thu Nov 05, 2020 1:09 am

Re: Cats vs catless track results

Post by Turbopowered68 » Mon May 17, 2021 4:17 am

damn between the weight savings and flow. I would have thought it worth a little more.
2014 Caprice V8
Elgin E-1840 P, LS9 Head gasket, LS7 Lifters, PAC-1218 springs, Trunion upgrade, Single roller timing set, Melling oil pump coming soon - ZL1 torque converter, Trans pan and filter.
1986 GN 212/212 Roller cam, 1.65 HR Rockers, 60-1 turbo, XFI 2.05, E85, Ebay Front mount IC, Husek Built TH200-4R trans, 3.42 gears 3800# .
1968 Chevelle LQ4, 4L80, 12 bolt w/3.42 gears

DapperDanMan
Posts: 33
Joined: Fri Sep 18, 2020 11:41 pm
Location: Liberty Hill, TX

Re: Cats vs catless track results

Post by DapperDanMan » Wed Oct 13, 2021 3:00 pm

I mean there are plenty of factory 500+ HP cars that have full emissions equipment, I think the common theory that cats are "too restrictive" is just a myth. And the exhaust smells better too.
2015 Caprice 6.0
2019 Ram 2500 CTD
2016 Ford Explorer Sport

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