Groan... I always have greater hair loss problems (through stress, pulling it out etc) at this time of year with the MOT looming.
Last year, it failed on emissions. Too high on Co2 or too high on Lambda, one or the other, and couldn't get it down on both at same time
I now know the previous cats were the wrong kind (they were for a n/a 2.3 20v - another garage rip off trick) - this year, got Milltek front to back, the 1-2-1 pipe is gone, just a straight through, and a single sports cat.
Results:
Efast idle
Max Limit (Result)
CO % Vol 0.30 (0.00)
HC PPM 200 (9)
Lambda 0.97/1.03 (1.01)
Enatural Idle Test
CO % Vol 0.50 (0.09)
As far as I can tell, sailed through - pass on everything. *Clunk* Someone pass the smelling salts.
BOTTOM LINE - if you were thinking of changing your twin cats to one sports cat, but worried about emissions... don't - if mine are anything to go by, you'll p!ss 'em.
Car's an ABY 93, 98k miles, serviced every 5 minutes (ok, 10 minutes, but no longer than that. Seriously, plugs changed after no more than 5k miles.) with all sorts of previous chequered history from letting clueless bullsh!tting muppets work on it. If you're reading this, you know who you are...
Right. I need a beer to calm me nerves...
PJ
Last year, it failed on emissions. Too high on Co2 or too high on Lambda, one or the other, and couldn't get it down on both at same time
I now know the previous cats were the wrong kind (they were for a n/a 2.3 20v - another garage rip off trick) - this year, got Milltek front to back, the 1-2-1 pipe is gone, just a straight through, and a single sports cat.
Results:
Efast idle
Max Limit (Result)
CO % Vol 0.30 (0.00)
HC PPM 200 (9)
Lambda 0.97/1.03 (1.01)
Enatural Idle Test
CO % Vol 0.50 (0.09)
As far as I can tell, sailed through - pass on everything. *Clunk* Someone pass the smelling salts.
BOTTOM LINE - if you were thinking of changing your twin cats to one sports cat, but worried about emissions... don't - if mine are anything to go by, you'll p!ss 'em.
Car's an ABY 93, 98k miles, serviced every 5 minutes (ok, 10 minutes, but no longer than that. Seriously, plugs changed after no more than 5k miles.) with all sorts of previous chequered history from letting clueless bullsh!tting muppets work on it. If you're reading this, you know who you are...
Right. I need a beer to calm me nerves...
PJ

Downpipe and Cat, £807.23 from QST, and you also have to run the gauntlet of the nice lady who answers the ... no, I won't go there... *shudder*
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