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Matt
Dodge Dakota
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6/09/2003
10:09:51
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 Subject: Gutted Cat?
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What exactly is a gutted cat? What is done to the catalytic converter? How much HP is gained? Any help would be great. Thanks in advance,
-Matt
fatmat789@yahoo.com
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dakotajess01
Dodge Dakota
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6/09/2003
18:44:53
|  RE: Gutted Cat?
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take your cat off and hammer a pipe through it and weld it back up to fool the inspection guy when he look under your truck, HP verys thats if you see a gain at all, will also make truck a little louder
01 QC 4.7,flowmaster, k&n air intake, autolite plugs, more mods to come if i dont burn it and collect the ensurance money :-{
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kota on 20s
GenIII
6/10/2003
02:47:54
| RE: Gutted Cat?
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i just went from a 3" high flow cat to a 3" striaght pipe. made a nice differance in the upper RPM's. sounds better too.
~Eric
Single cam, non-VTEC
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adam
Dodge Dakota
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6/10/2003
02:54:39
| RE: Gutted Cat?
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kota, did u have to get a o2 sim box? i read that zip tieing the sensor to the frame will stop the error codes (any truth to this)
also, with all your perf mods, do your 20s sometimes "hold u back" b/c of thier diameter or wieght? (just curious b/c i have a modded 5.2 and about to get some 20s) thanks
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kota on 20s
GenIII
6/10/2003
03:02:13
| RE: Gutted Cat?
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yup, just zip tied it to the frame and put a plug in the 02 hole. no codes here! my exhaust guy kinda looked at me funny when i told him to zip tie it to the frame..lol
my rim/tire combo work good for me. my tires are a tad taller than 27", so it gives me a little more gearing (taking my 3.92's to about a 4.01), and although i have not weighted them, i am almost 100% sure my billet wheels are a little lighter than a RT wheel.
~Eric
Single cam, non-VTEC
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gps_jetskier
Dodge Dakota
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6/10/2003
08:27:59
| RE: Gutted Cat?
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Taking out the third cat makes HP? Are we sure. After a search I see alot of contradicting advice. I have everything ready to do it. Anyone have dyno results?
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kota on 20s
GenIII
6/10/2003
13:21:28
| RE: Gutted Cat?
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no dyno results, but i have track numbers to back it up.
i gained 1/10 and almost 2mph in the 1/8
my butt dyno likes the extra pull it provieds too! i also didnt loose ANY lowend torque, or none that can be felt.
but i also have a supercharger, manifold, rockers, headers, ect, ect, so my cat was a kink in the works. someone with a more stock truck may not feel as much of a differance, but im not sure.
~Eric
Single cam, non-VTEC
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gps_jetskier
Dodge Dakota
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6/10/2003
13:44:15
| RE: Gutted Cat?
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4.7L Quad. Homebrew K&N, IAT adjuster, CNCing the stock TB to 68mm, installing HO cams too. So I was thinking I'd do this at the same time. Whatcha think? Keep it as is or straight pipe the 14" or what ever it is?
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kota on 20s
GenIII
6/10/2003
13:54:02
| RE: Gutted Cat?
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if you can find a exhaust shop to do it, just flange the cat, and flange a piece of pipe. that way you can just bolt in and unbolt the cat at will.
~Eric
Single cam, non-VTEC
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gps_jetskier
Dodge Dakota
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6/10/2003
13:56:55
| RE: Gutted Cat?
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Why...No need to really. We don't have inspections, and I'll have it welded back in if it doesn't work.
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kota on 20s
GenIII
6/10/2003
14:00:30
| RE: Gutted Cat?
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then do that.
i didnt know where you lived when i made the suggestion
~Eric
Single cam, non-VTEC
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gps_jetskier
Dodge Dakota
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6/10/2003
14:24:19
| RE: Gutted Cat?
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Think it's worth doing with those mods only though?
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kota on 20s
GenIII
6/10/2003
15:13:52
| RE: Gutted Cat?
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i honestly dont know how it will work for you, but
its cheap to do, so you might as well try it and if you dont like what it does, put the cat back in.
~Eric
Single cam, non-VTEC
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Matt
Dodge Dakota
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6/22/2003
16:20:02
| RE: Gutted Cat?
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I'm tkaing my cat off tomorrow and i might need some help moving the o2 sensor. what does it look like? and how long is it? thanks guys for the replys,
-Matt
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gps_jetskier
Dodge Dakota
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6/23/2003
07:45:47
| RE: Gutted Cat?
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Spark plugish. Next to the cat. Or depending on yer year it could be four of them. Two in front of the precats and two aftewards.....
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