New rule for the UK MOT this year is that if the car should have a Cat (which is all Petrols after 1992) then it needs a Cat for the MOT even if it somehow managed to pass the emissions test without one in the past.
Very easy to see if the pre-Cats are there or not, but the real question is if you need them or if the main Cat will be enough.
I expect the main (VERY visible) Cat under the car will be enough to keep them happy.
If you have the heat shields on the manifolds and your under tray you should be fine as nothing is allowed to be removed.
All warning lights are now failures aswell as inner cv boots and split or missing dust covers from balljoints and a number of other things that I can't remember ! Guess I better read my special notices again
Missing dust cover from my upper arm balljoint was an advisory on mine a few days ago. They definately upped the anty it normally sails through but they failed it on a few bulbs etc, replaced all for nothing and passed. Think they want to start showing fails for statistics.
Week ago I passed emission test with my CF2 GTA on standard ECU map. The results were perfect. I have here the protocols from 2010 when I still had the CF3 pre cats and from last week with CF2 manifolds.
Carbon oxide (%)
(limit to pass the test 0,5)
(limit to pass the test 100)
Values at 3000rpm:
Carbon oxide (%)
(limit to pass the test 0,3)
(lamda range to pass 0,97-1,03)
This means that in my case both the CO and hydrocarbons (unburnt fuel) have increased, but still very far away from to values to fail the test. I am not sure if the emission measurement is standardized across EU or not, but limits apply to the emmisions tests in Slovakia, UK might be different, no idea.
Exactly. We needed to hold the engine in 3-4k rpm for about 30 second for the cats to heat up and than the results were achieved. Idle values were measured after this, when the cats were still hot. Because when the car idles for 5 min the cats also cool down and the results are not optimal.
My TS with 2 precats removed and main cat replaced with 200cpi HJS passes emission tests as well, but it really needs some heat up.
Seen a GTA about? Was it you... let's keep a thread going of sightings...
I've seen 2 in a week which was so unusual for me! :o They were both 156's too!!!
A silver 156 GTA on the Watford ringroad (near sainsubury's) on tuesday night at about 7PM.
A red 156 GTA in Barking last saturday...
Hi there, I posted this in the 147/156/GT lounge also so apologies if you've seen it twice!
I'm upgrading my GT's suspension and of course this includes the Eibach ARB kit. My local alfa specialist is having trouble fitting the rear bar. He says once fitted it is 25mm offset to one side, caused...
I'm currently trying to organise a group buy for some GTA performance cams - made to spec by Alfa legend Jim K., author of the V6 High Performance Manual.
Alfa Romeo V6 Engine High-Performance Manual - Jim Kartalamakis - Google Books
This thread is to gauge interest - there are other...
So, as its very quiet everywhere and I've got a few weeks off of work I thought I would start a new project and hopefully share my journey. I have had my GTA for just over a year now and it just sits on the driveway looking pretty all the time. I have young kids and these cars simply aint family...