FastR1Red Member 360 Member For: 19y 6m 22d Gender: Male Location: Mt Waverley Posted 13/05/07 12:02 PM Share Posted 13/05/07 12:02 PM Can't you actually SMELL a gutted cat? I thought that was one of the properties of unleaded, the stench of sulphur/rotten eggs. The cat kills this smell so if your cat is gutted then rotten eggs...I'm sure that was the go??????? Link to comment Share on other sites More sharing options...
Laner Former MPS3 Driver! Donating Members 735 Member For: 17y 9m 8d Gender: Male Location: East Ballina NSW Posted 13/05/07 12:06 PM Share Posted 13/05/07 12:06 PM wouldnt it also stain the rear bumper severely?? Link to comment Share on other sites More sharing options...
rednuts81 Get on the end of it..... Member 578 Member For: 18y 11m 7d Gender: Male Location: CQ Posted 13/05/07 12:14 PM Share Posted 13/05/07 12:14 PM hey guysjust wondering basically, what sorta rwkw gain can u expect from a gutted cat?when I melted the metalcat I had we gutted it to see the difference before I put an other one on and it pushed another 42rwkw but is was over boost ing any where up to 20psi Link to comment Share on other sites More sharing options...
grepin Member 109 Member For: 17y 10m 13d Posted 13/05/07 01:27 PM Share Posted 13/05/07 01:27 PM I talk from my Skyline days when everything wasnt legal. Not going down that track again with the XR6T. Yes lighter coloured cars will stain. Cant remember smell being an issue. As a stock car it made 15 rwkw above an after market cat.Never new of anyone being caught out for cat reasons they were for everything else. Get defected, take bits off, get it off defect put bits back on. People get pretty skilled at turning there cars to stock and back again.Its funny how we can have track cars without cats, but on the road they are required. I have no data to back it up but wonder how well they really work. I have heard after a few 1000 km they are not much chop anymore. Link to comment Share on other sites More sharing options...
SDWAYZ Member 103 Member For: 18y 5m Posted 16/05/07 01:13 AM Share Posted 16/05/07 01:13 AM I had a gutted CAT on my VTEC CRX for 3 years. Got an EPA for too loud once by an off duty officer. Just went for a sound test had em stuffed too. VTEC dosn't activate below 5700RPM and won't activate in neutral or without the car moving so it passed anyway. Above that it screams! Just change it back to stock before you go to the EPA=solved! I think mine is average @120k so I will prob gut it this w-end. They are good for knocking down noise though...... Link to comment Share on other sites More sharing options...
IH8TOADS Silver Donating Members 3,618 Member For: 19y 4m 16d Gender: Male Location: OZ Posted 16/05/07 10:53 AM Share Posted 16/05/07 10:53 AM Think of the air you breathe....... don't gut the cat. Link to comment Share on other sites More sharing options...
Laner Former MPS3 Driver! Donating Members 735 Member For: 17y 9m 8d Gender: Male Location: East Ballina NSW Posted 16/05/07 11:00 AM Share Posted 16/05/07 11:00 AM Get defected, take bits off, get it off defect put bits back on. People get pretty skilled at turning there cars to stock and back again.it must be just me, but when I got defected for my wheels being too big on my 95 VTi civic, I actually went to the trouble and expense of having said wheels engineered to stop the defects, wouldnt this make more sense??if you get defected, then put car back to standard just to pass defect, sounds like your asking for trouble......dont gut the cat.....buy a high flow and be happy your car is legal, and you wont get hastled for being a back yard bodgy!!my 2 cents Link to comment Share on other sites More sharing options...
shiftyxr Member 340 Member For: 20y 7m Location: Adelaide Posted 28/05/07 01:22 AM Share Posted 28/05/07 01:22 AM Did a test on my F6 285rwkw with 3"dump 3.5 hi flo cat std exhaust edit injectors that was max pwr @ 14psiRemoved the cat for testing only 320 rwkw no other changes same dyno same day and also made it 1-2 psi less Link to comment Share on other sites More sharing options...
RAP1D Member Donating Members 3,739 Member For: 18y 6m 4d Gender: Male Location: Sydney NSW Posted 28/05/07 07:54 AM Share Posted 28/05/07 07:54 AM The jump in kws sounds typical... a drop in boost too? One would expect a rise in boost, just goes to show there are so many different possible out comes with so many different combos Link to comment Share on other sites More sharing options...
mpsxr6t Member 112 Member For: 17y 11m Gender: Male Location: Melbourne Posted 30/05/07 10:57 PM Share Posted 30/05/07 10:57 PM The jump in kws sounds typical... a drop in boost too? One would expect a rise in boost, just goes to show there are so many different possible out comes with so many different combosIm gettin all mufflers taken out and thinking of doing this cat gutting thing....that setup would b very lound wouldnt it? n probly get me pulled ova?is gutting the cat something u can do urself or? how do u actually go about doing it? Link to comment Share on other sites More sharing options...
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