Could A Cop Tell If You Have A Gutted Cat From Looking At It?

[bozodos]

stop being a fkn girl n bash it out. if you replace the whole thing with a straight bit of pipe, that is stupid. I've been through an EPA test station with mine bashed out, guy asked me if it was, I replied that I hadn't touched it since I bought the car. Who was to say it hadn't blown itself out of the exhaust?

[joeyjoejoejuniorshabadoo]

yeah, but you cant get a fine for not running a cat unless they physically remove the decat and look inside

the worst they can do is tell you to go in for a full emissions test

and "tap tap" will never hold up in court

[R31Nismoid]

The roadside inspection stations can and do issue fines on the spot.

You do not have to be reported for a full EPA as they have all the equipment with them on the mobile station that they setup

So you get a fine on-spot, and then a FULL EPA as well to go and then ensure you "comply" after the fact by "X" date.

[krzysiu]

Unless you have over 300kw most highflow cats wont make much differents to power maybe 1 - 2 kw if there half decent?

So just go highflow or if you want to run decat pipe/ gutted cat. But other than flames and nose its not going to make THAT much of a diff.

Hamish is right. I removed cat and got 5rwkw top end and 30!!!! read 30! rwkw in the midrange. makes a huge diff @ higher power figures

[krzysiu]

Also about police checking if you have a cat. What they do is measure your exhaust to see how far the cat is, then they ram a flexible rod down your exhaust. If it goes further than the measured point they know its not there. Be careful of that one!

[Cowboy1600]

The roadside inspection stations can and do issue fines on the spot.

You do not have to be reported for a full EPA as they have all the equipment with them on the mobile station that they setup

So you get a fine on-spot, and then a FULL EPA as well to go and then ensure you "comply" after the fact by "X" date.

The only way they could possibly do you for hollowing out your cat is is they pull it off. No manner of equipment, short of a long pinhole camera, is going to hold up otherwise. "Tap tap" or emissions won't prove that your cat has been bashed out. It' might prove that your cat is worn out (or hollow) and that would see you recieve a notice to fix it and maybe a small fine for having an unroadworthy car.

"It was like that when I got it" would easily see you walk away from court with an order to fix it and a reprimand for the police for wasting the courts time with such trivial matters when a simple "fix it, take it the VicRoads for an inspection when you do and don't do it again" would have sufficed in the first place unless it's the 8th time you've been done for these types of offenses.

[SiR_RB]

do cops here in nsw go these extreme measures ?

what if u bought a car with a bashed out cat and u did not know about it? and happen to get done for it? guess its still your fault as your in posestion of the car...suxks i guess

just go high flow and u have nothing to worry about

[joeyjoejoejuniorshabadoo]

The roadside inspection stations can and do issue fines on the spot.

You do not have to be reported for a full EPA as they have all the equipment with them on the mobile station that they setup

So you get a fine on-spot, and then a FULL EPA as well to go and then ensure you "comply" after the fact by "X" date.

yeh, i get that, but what i meant was you cant get a fine for not having a cat unless they pull it...

you can and will get a fine for noise etc

[SiR_RB]

is there a website around about car emissions etc and the fines that apply for not running cat convertors ? curious to have a read....

[ohno1]

Mine has a relatively new high flow cat and still blows massive flames now and then, it has a fairly rich tune as it was just to get me through an inspection so quite a bit of fuel on the overrun, has anyone experienced this? Would be surprised if someone had piped it, certainly doesn't look like it.

i got a high flow and it apparently pops flames

and youd be pretty unlucky to actually get done by a cop for a gutted cat

[GTRPowa]

Kinda skipped ahead on the thread here to add an after thought;

Hi-flow cats aren't expensive. The people upgrading them have usually spent many thousands upgrading fuel and air systems already, and with the quality of metal cats and the likes nowadays, why wouldn't you use one?

I've read time and time again you will hardly get ANY performance gains between a decat and hi-flow, so why would you knowingly poison our atmosphere, and (not aiming at anyone in particular) add to the negativity that these cars already receive?

Not to mention the damage to your car, the 'book being thrown at you', etc

Is 10kw (or less) really that important?

--

Always use a cat. Read around, the days of negativity regarding cats are diminishing.

Edit (I was also under the optimistic impression that people who own 350+kw cars understand how they work - including the cat - and can weigh the goods and bads (as they would with their self control of their right foot) and hopefully choose the right thing to do here.

http://en.wikipedia.org/wiki/Catalytic_converter

Edited July 12, 2010 by GTRPowa

[krzysiu]

Read the thread mate. I mentioned the power difference between a high flow cat and a de cat on my car. Huge difference in mid range power/torque

[Rolls]

Read the thread mate. I mentioned the power difference between a high flow cat and a de cat on my car. Huge difference in mid range power/torque

Your results don't make much sense, it should cause the biggest increase in power towards redline, not in the midrange. Was it a back to back dyno on the same day?

Edited July 13, 2010 by Rolls

[MrStabby]

Read the thread mate. I mentioned the power difference between a high flow cat and a de cat on my car. Huge difference in mid range power/torque

Which cat did you have? "high flow" can mean different things to different people - especially if you work in the marketing department for a cat converter company....

For me, not running a cat is for people that piss in the street and throw McDs wrappers out the window... low brow.

[R31Nismoid]

I can certainly tell if there is a CAT or no CAT with my 3.5" exhaust

CAT is a CATCO 4" item, and without a doubt I can tell performance wise.

Doesn't show particularly much on the dyno however as it is more in throttle response and similar which is not really evident on rollers.

Hence i always say get the biggest CAT you can, 4" (if you are a 3" exhaust) or 4.5" is you are 3.5"

[joeyjoejoejuniorshabadoo]

Which cat did you have? "high flow" can mean different things to different people - especially if you work in the marketing department for a cat converter company....

For me, not running a cat is for people that piss in the street and throw McDs wrappers out the window... low brow.

what about people that run a decat AND e85?

[scotty nm35]

As we are still running 15 percent petrol they will always force e85 cars to run one, until they exempt ethanol from their silly emissions ideas like they did with LPG (and allow straight ethanol) we are going to have to leave the exhaust blocker there.

[joeyjoejoejuniorshabadoo]

sure... "there"

[scotty nm35]

I would be interested to see these gains for myself...

I am in the process of making a quieter (stealth) system, I bought a 4 inch highflow but I would like to fit a decat while on the rollers to see what all the fuss is about. Is it worth trying?

I had better order some more flanges.

[bozodos]

to those who cry about the environment etc: all cars made before 1983 are not required to run one at all LOL.

One day far in the future I may get a proper metal cat