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Old 12-05-2012, 07:47 AM   #1
mad matt777
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Help me decide!

I am going back and forth on headers (not so much brand, just cats or no-cats). I cannot decide. I've been warned about drone and smell and also that cats are power robbers blah blah blah. Is anybody local running a SLP catback with LTs? Anybody that can take me on a ride or something? Catted or catless? I'm ready to pull the trigger, just need alittle bit more info before I do so. All the exhaust vids I've found are outside of the car, I want to hear inside the car and in person.

If it helps, my commute (when I actually drive it to work) is 11 miles round trip. 4 stop lights separate my house and my job. This car is my nice weather toy, although I've been driving it in the rain since the Saab has bald tires. If anybody local doesn't mind meeting up for a ride along, please let me know! Thanks!
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Old 12-05-2012, 08:32 AM   #2
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catless
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Old 12-05-2012, 08:59 AM   #3
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I vote for catless. I haven't had an issue with mine, and I normally can't smell anything when commuting (yes, my olfactory senses function fine). Can't comment too much about drone as my dumps make any 'catless drone in the cabin' worse haha
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Old 12-05-2012, 09:08 AM   #4
mad matt777
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I think I'm just gonna buy catless. Mids are cheaper anyway.
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Old 12-05-2012, 09:19 AM   #5
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catless are louder and stink, but more power.
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Old 12-05-2012, 09:37 AM   #6
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Catless. Just make sure you get rear O2s tuned out or you have 0 chance of passing inspection, because they plug into your OBDII and that will fail it.
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Old 12-05-2012, 10:51 AM   #7
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I plan to get Gforce to tune it just because they are local. I ran open headers on my Z28 for like 5 years, with just turn downs at the rear axle and it was a beast. Just not sure about the GTO sound. Oh well, I can alway buy cats if I need to. Can't wait to get the LTs on!
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Old 12-05-2012, 12:50 PM   #8
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if your ever in the austin area, you can get a ride.

here's a quick pull, about 3/4 throttle with kooks
lt / catted mids into spintech xpipe to race muffs
with turn downs.

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Old 12-05-2012, 12:57 PM   #9
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Sounds good.
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Old 12-05-2012, 01:28 PM   #10
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In my opinion, go with cats. They don't cost you that much power and you don't have to worry about getting inspected, stinking, etc.
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Old 12-05-2012, 01:46 PM   #11
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If I go with cats I'm leaning towards the SLP headers. I have a steep drive way and speed bumps in my neighborhood and it seems they tuck up the best.
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Old 12-05-2012, 02:09 PM   #12
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this car is lowered pretty good. plenty of ground clearance
with the kooks set up.

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Old 12-05-2012, 02:21 PM   #13
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I just saw/heard another 04 PBM on my way home. Sounded ANGRY! Cannot wait.
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Old 12-05-2012, 02:22 PM   #14
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Quote:
Originally Posted by mad matt777...View Post
If I go with cats I'm leaning towards the SLP headers. I have a steep drive way and speed bumps in my neighborhood and it seems they tuck up the best.

This. Albeit it's cheaper not having to buy them. You will not notice much if any power loss unless you're putting out big numbers.
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Old 12-05-2012, 02:22 PM   #15
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I have cats with spintechs. Lets just say I'm glad I went with cats.


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Old 12-05-2012, 02:23 PM   #16
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catless and straight pipe dependin on how sensitive your hoohaa is to smell and sound
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Old 12-05-2012, 02:37 PM   #17
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Is anybody running loudmouth without cats though? Anybody local? I want a ride along. Or atleast an in car clip
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Old 12-05-2012, 03:10 PM   #18
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pm mr.red he has that setup in an 04 auto car.
i have gutted cats so i have the look, i dont really notice the smell unless its sitting idle for a long time.
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Old 12-05-2012, 03:21 PM   #19
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definitely get cats.

the reduction in smell is worth the price of admission.
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Old 12-05-2012, 04:03 PM   #20
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are yall noticing the smell inside the car? i've never paid much attention or i guess it wasn't bad enough for me to pick up on
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Old 12-05-2012, 04:06 PM   #21
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I've never noticed smell inside a catless car. Outside yes, but it doesn't seem to bother me.
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Old 12-05-2012, 05:40 PM   #22
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A good tune can get rid of most of the smell.
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Old 12-05-2012, 06:46 PM   #23
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Decisions, decisions

Hey Matt. I don't know if this will help, but I was running JBA shorties and high flow cats with that exhaust. Here's an idle video.

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Old 12-06-2012, 05:10 AM   #24
mad matt777
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After much deliberation and little sleep yet again, I think I'm going to order catless mids. If I don't like them I can always order catted mids next. Thanks for all the tips and help!
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Old 12-06-2012, 07:29 AM   #25
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windows down at a stop you definitely notice it.

anytime im on a cruise or anything people tell me how much they hate being behind me.

but to be fair, my car needs a tune like no bodies business.
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Old 12-06-2012, 07:52 AM   #26
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no cats. I dont notice the smell unless im at a stop with the windows down. plus the smell is awesome. eff em if they cant take a joke

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Old 12-06-2012, 10:54 AM   #27
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Loudmouths sound like absolute garbage catless. Most terrible 2000ish rpm rasp I've ever heard, on any LS vehicle.

An 800whp turbo car lost 8whp with the install of high flow cats. You'd never notice the power difference. If you do go catless - your car is almost stock, you won't have the smell issues at idle that a cammed car would have.
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Old 12-06-2012, 11:31 AM   #28
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Well I still have my stock system if I don't like the SLP with the catless setup. But def going catless to begin with just to save the extra coin. Figured I'd buy the woman something nice for Xmas too.
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Old 12-06-2012, 11:47 AM   #29
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i had catless, got sick of the smell and rasp. put catts on, no smell, better sound.

if you have a girlfriend or like entertaining ladies, get cats... chicks dont dig smelling like cooter from dukes of hazard, well at least the snobs i date from north jerzey lol.
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Old 12-09-2012, 08:26 AM   #30
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Haha Cooter never was a big hit with the ladies. My gf/fiancÚ/whatever isn't much of a snob, but we are usually in the Saab anyway. That kinda sounds snobbish now! Haha.
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