143 replies to this topic

[Dan r]

Injector cleaner??

Now that would be a dream fix!! Off to halfrauds with my fingers crossed! Thanks

[Dan r]

Good news!... Found the problem, the cat has completely fallen apart / melted which has blocked the exhaust, I surprised it ran at all really. I'm now concerned what may have caused it, so am wondering what's best to do as I don't want to damage the replacement or am I worrying about nothing as it is 7 years old? I assume tullet will fit a new brick if I send the pipe to them rather than buying a new one? Going to try loading up a photo in a minute so with any luck you can see the damage within the next 4hrs!!

[techieboy]

I'm now concerned what may have caused it

Primarily the sh!t quality of the cats they fit that aren't up to the job. Lucky it's lasted 7 years, most of them last 7 months. Just need to hope it hasn't caused any problems like we suspect MartinS' cat failure did.

[Dan r]

 

I'm now concerned what may have caused it

Primarily the sh!t quality of the cats they fit that aren't up to the job. Lucky it's lasted 7 years, most of them last 7 months. Just need to hope it hasn't caused any problems like we suspect MartinS' cat failure did.

 

can anyone recommend a cat that would fit instead then?

It was a 100cell in their 2.5" system, I can get it cut open and fit the new brick easy enough?

thanks

[techieboy]

The recommended flavour of cat manufacturer at the moment seems to be HJS (and specifically one of their motorsport cats) or better yet de-cat'ing altogether. The Tullet cat was stupidly small and anything of better quality is likely to be a fair bit larger, so it won't be a case of simply replacing the innards. It will be a case of chopping out the whole thing and welding in a replacement whilst adjusting the length (shortening) of the cat section of pipe to fit back in place. I think Tullet do offer an HJS option now but you could just as easily get it done at any local exhaust fabricator.

[Dan r]

Thanks, surely it would never pass an MOT without a cat? would be the most simple fix though as couldn't I just knock out whats left of the brick and fit a lambda cheater? 

Not sure what the effect of the diameter change in the pipe where the cat used to be would cause though?

[Dan r]

http://s347.photobuc...t]=1&sort=1&o=0

[techieboy]

Thanks, surely it would never pass an MOT without a cat?

Yes, without external assistance of some form, it would undoubtedly fail.

http://s347.photobuc...t]=1&sort=1&o=0

Yup, that's officially a mess.

[Bargi]

Thank God you got there! Sent from my cuntyfuckbollock phone by Twatatalk

[Dan r]

Was a bit of a mission ay! Still don't really understand how this caused such a binary misfire, I'd have thought it would have steadily got worse as the revs increased, must be the effect of the sc reaching a limit as the back pressure got to a certain point. Thanks for everyone's input, really appreciate this forum �

[Stocky]

Hi Dan, so have you fitted the new cat and its driving ok now?

[Dan r]

Hi Dan, so have you fitted the new cat and its driving ok now?

No I just removed it this morning, will look into options for cat replacement tomorrow. I also need a new lambda sensor as this has bent with the cat trying to go down the exhaust!

[Exmantaa]

Just reading back, but everybody missed the big clue in your first post on a blocked exhaust:

 

"Car runs perfectly on light load but I may be hearing a bit more whistling and boost noises on light boost than normal, not totally sure..."

 

 

[CHILL Gone DUTCH]

Dan, just thinking out loud Not sure a collapsing cat would cause a misfire (wouldn't it normally result in reduced power?, but the misfire could be the beginning of the cat collapsing due to unburnt fuel entering the exhaust. Cat is a Tullet 100CEL 2009 vintage Injectors could be a possibility EGR valve? Vacuum leak? Throttle body I think is standard

Nearly got it here

[Dan r]

I didn't realise there was an issue with these cats, I found a thread from 2012 discussing the tullet cat failures earlier this afternoon. Sounded like there has since been improvements made since, have many of you had failures on sc cars with them post 2012 as it'd be a lot less hassle for me to just post it back to them to get a replacement welded back in? On the plus side I now have quite a good spares package for any misfire related issues!

[CHILL Gone DUTCH]

Lol Just glad it's sorted

[PaulCP]

The cat has survived longer than most although tbf the car had only covered around 15k miles since fitting up to last summer. Readings at MOTs were always consistent but the last one I had done the numbers had raised a little nearer towards the limit. Any problems at the last MOT? Doesn't sound as though you've driven it much since the misfire began so hopefully no other resulting damage has occurred.

[Dan r]

So just been quoted 685 + vat + postage for them to supply and weld in an hjs cat! Little odd they supply the sc downpipe with 100cell cat for 589 incl vat. Yet to find out what cat they fit to that as they reckon the hjs one is the only one that will last! Bit tricky to know which his cat to use from hjs using their site as I'd like to know what I could get one for and sort the welding out myself. They seem to have a 2000cc and PS limit which being a 2.2 sc makes it a bit difficult, does anyone know please? Thanks Dan

[smiley]

Tullet put's in a ceramic cat, that has difficulty with hard abuse.

The trick is to get a steel cat welded in, that can handle more abuse.

 

The HJS is the Ferrari cat. Could be worth checking out a few other vendors.

 

 

[Dan r]

Tullet put's in a ceramic cat, that has difficulty with hard abuse. The trick is to get a steel cat welded in, that can handle more abuse.   The HJS is the Ferrari cat. Could be worth checking out a few other vendors.    

The one in mine which failed is a metal one, check the photo. The only recommendations I have is for an hjs but not sure which one as they haven't said which one they would fit. Can anyone recommend one for my stage 2 sc 2.2 please? I don't mind paying strong money for a top product, but if I can save a chunk and get the same thing I will try! Thanks