sidman

I can't find any up to date information about the law and de-catting an exhaust. Im looking to do this but don't want to end up with a whacking fine. I know it will need to be replaced for the MOT but what are the laws if I get pulled over and they do a roadside test?

johned

You are breaking the law.

Peedee

iTrader: (4)

It's against the law, plain and simple. You're breaking the legal emission levels. It's not a case of it just has to pass for the MOT. Your car has to comply with the law all year round. I would imagine the punishment would depend on how the copper is feeling that day and whether he's into cars or not

JDM_Stig

iTrader: (3)

As you haven't said what car or year it's hard to say. .

gazzawrx

iTrader: (11)

If youre going to decat it then get a resonated downpipe and wrap it, that way the pipe still looks like it has a cat in it and you can tell them its a sports cat, other than them taking it all off to inspect theyll never know any different.

MOTORS S GT

iTrader: (2)

The problem being is the risk you take being pulled by VOSA on the roadside tests, which we have quite often round here, & having a emissons probe stuck up the exhaust.

sivo

iTrader: (30)

Having been decatted and now back to a legal setup I can honestly say I'm a lot happier, also my **** has stopped twitching whenever I have the police behind me.
I was 345 bhp decatted as opposed to 326 with the prodrive sports cat.
Small sacrifice to me and I'm sure you can run high enough power for a road car on a decent sports cat.

Just my opinion.

Siv

Tidgy

unless you have a mega loud exhaust your unlikely to get any hassel from vosa unless you get pulled over for something else.

RAGGY DOO

iTrader: (1)

What's a cat ?

Tidgy

furry thing that meows alot, only cats i know of anyway

hedgecutter

iTrader: (5)

we call it ***** over the water

sivo

iTrader: (30)

Agreed, my h & s was VERY loud and needlessly drawing attention to the car

Siv

Tidgy

cant beat a wet, tight one,,,,,,,

RAGGY DOO

iTrader: (1)

Too right

Tidgy

track friendly systems are the best way to go, quiet but non restrictive

sivo

iTrader: (30)

Would be interesting to see who is running the highest power with a legal exhaust system.
Just curious

Siv

jaygsi

iTrader: (46)

It's illegal plus it's a pain in the bum to keep swapping over, just get a 3" system with sports cat, there very free flowing.

TimH

iTrader: (11)

My forged 2.5 used to run 525 bhp (with meth) with a 3" decat Miltek. This dropped to 510 with the Miltek sports cat centre pipe.

I happily gave up 15bhp to avoid hassle at MOT time etc!

Smithys STI

iTrader: (1)

I'm an mot tester and VOSA came and did a routine spot check on us recently and I had to sit down with them whilst they fired a about 10 questions at me...they also said to me that if I spot cars with tampered cats and or weld marks on dpf's where I suspect the insides have been removed let them know and they would put the car details on the police national computer to pull the cars over!!!
not that I would do that but just proves they are on the crackdown!!

Turbovin

iTrader: (2)

With the power most are running a proper 100 cell cat will give a barely noticeable power loss up to 450-500 bhp.

MOTORS S GT

iTrader: (2)

Around here they go out on Police bikes pulling you in from the M1 A45 A508 & bring in convoys of likely culprits, from trucks, buses, cars & bikes to where ever VOSA is based that day, usually the football stadium carpark, plenty of visually modified cars there, including me in a customers car, luckily it had a sports cat fitted, stuck a probe in the exhaust & ran there test's, no problems, but a chap in a Skyline was not so lucky, he was ticketed for none conformance to emissions & various other items, & was taken away on a flatbed.

neil-h

Would imagine it was the "and various other items" that got him the trip on the flatbed. Minor violations tend to be dealt with via a 7 day rectification notice.

MOTORS S GT

iTrader: (2)

Yes, I think it was parts fitted in the brake system leaking, the camber of the wheels with wire showing through the inner rears, it was quite a list he had.

Paben

iTrader: (5)

I know you only get what you pay for but Milltec exhausts seem very expensive. If you want to go legal after running a decat exhaust is there a decent option out there for less than £1k?

sidman

sorry gents, should of stated....got a 06 wrx hawkeye.....just got a toyosport 3" full decat system but not sure whether to put the decat pipe on....if I dont, will the centre pipe fit the origin cat downpipe?

gazzawrx

iTrader: (11)

Have you ever been pulled and had one of these tests done? I know i havent and id bet everyone posting in this thread hasnt either, theyre too busy dipping tanks for red diesel

MOTORS S GT

iTrader: (2)

Yes, as I stated in the above topic, they were dipping tanks on farm looking Landrover's, pikey looking transits etc, that day I was pulled there must of been 25 - 30 Vosa officers all doing tests, from the above to weighing vehicles to private hire & black cab checks, seem to do it once a month at this location, usually a Thursday.

SmurfyBhoy

What about those guys running an original closed deck block from back in the days when it didn't count.

I remember from when i owned my little glanza that if you had an engine from a uk gt turbo 1992 ish... that had no cats and notified DVLA you were safe ?

Obviously this would need to be proven,

sidman

Anyone...?