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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 04-01-2012, 11:25 AM   #1
nighttowl
 
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JBA cat4ward shorties

i was looking at the jba cat4ward shorties, and wondering if i need to buy any other items to use them with the stock cats?

does anyone know this?

reason is i live in CA, with BS smog laws, so i need to use the stock cats.
also, my catback fits the stock cats.
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Old 04-01-2012, 11:50 AM   #2
VR Baron
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I hear ya. I dont think you do. they just replace the stock manifolds. Check with JBA.
May get more sound and a bit more growl but hp maybe 0-5?All I got on my LS1 and V6
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Old 04-01-2012, 01:52 PM   #3
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Quote:
Originally Posted by VR Baron View Post
May get more sound and a bit more growl but hp maybe 0-5?All I got on my LS1 and V6

they have a dyno on thier site that shows 18 over stock.
i just requested the info on thier site. ill post my thier response.
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Old 04-01-2012, 04:43 PM   #4
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Quote:
Originally Posted by nighttowl View Post
they have a dyno on thier site that shows 18 over stock.
i just requested the info on thier site. ill post my thier response.
Dont think so but you never know. Maybe if there is a drop in power at a given lower rpm and it fills in the gap showing a big increase. Seen that on axelbacks Longtubes on the v6. Also hypertech tuners.Some mfg's do that to show big gains, but they are not the peak gains
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Old 04-01-2012, 06:32 PM   #5
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i actually have one of the hypertech tuners, it made a very noticeable difference in power. i took my camaro to the track when i first got it, and it was actually the fastest camaro ss (out of 5) that was there that night (1/8 mile, irwindale). hp tuners, and flowmaster catback on the way this week.
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Old 04-01-2012, 06:54 PM   #6
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You'll do fine installing them on the stock cats. Just make sure you tighten things up.

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Old 04-06-2012, 11:16 PM   #7
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got one of them on today, drivers side was easy, but the passenger side is tight! header wont go in from the top, im thinking about dropping the mid pipe, and putting the header in place through the bottom.
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Old 04-07-2012, 08:15 AM   #8
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got one of them on today, drivers side was easy, but the passenger side is tight! header wont go in from the top, im thinking about dropping the mid pipe, and putting the header in place through the bottom.
If I recall, that's what I did. Take you time. I tried to force mine from up top and scratched it a little.

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Old 04-07-2012, 09:58 AM   #9
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May get more sound and a bit more growl but hp maybe 0-5?All I got on my LS1 and V6
we'll see. im more interested in runing a 12.99 or faster on street tires. should actually be there.

besides, i live in ca, and i do not want any issues with smog later on down the road... although i seriously would rather go full length headers and high flow cats. swapping out stuff just to smog something sucks and gets old really fast. been there.

besides, padre has them, and he's laying down some serious power.
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Old 04-07-2012, 10:35 AM   #10
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Yep. Passenger side has to go in from the bottom. Loosen the band clamp for the Cat and move that out of the way and it will slip right up there.

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Old 04-07-2012, 11:11 AM   #11
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Let us know if you and what you notice on the street. On the v6 I did notice what I had hoped for and that was bottom and mid range pickup, top end not noticing 5 hp, but hey maybe you'll get more. Yeah here in Kali we cant do much. Solo hi flows you will notice I hear, at least easier to take off when needed unless they start randomly looking under cars.
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