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Cat needed??
antwan - 22/2/11 at 08:55 PM

I have an M42 engine from a BMW 318is 1994/1995 engine. Installing it in an MNR. I understand that the emissions limits are slightly lower than todays limits but anyone have a clue if I will get away without a costly (and ugly) cat converter?

The engine is running a completely standard fuel injection system.

Ta


big_wasa - 22/2/11 at 08:59 PM

You will need one if the engine was made after aug 1995


antwan - 22/2/11 at 09:01 PM

Result! Checking the V5... Car born in 02/1995. Not questioning ones knowledge but how sure are you on this?
Thanks


adithorp - 22/2/11 at 09:10 PM

If the engine is pre Aug95 (and you can prove it) then the emmision test is CO<3.5% and HC<1200ppm at idle. Those are the pre cat' limits. It should run somewhere around 0.5-1.0% co without a 'cat, so no cat' needed.


antwan - 22/2/11 at 09:13 PM

Great news thanks chaps. It will make for a much cleaner installation.


ReMan - 22/2/11 at 09:21 PM

Check 4 yourself too
http://www.businesslink.gov.uk/Transport_files/124_IVA_M1_Inspection_Manual_Version_1010.pdf


big_wasa - 23/2/11 at 08:51 AM

when looking at the above you need to know your kit will not be on there data base hence aug 95 and not 92 but you will need proof.