Quote:
Originally Posted by kyleb
WACR.
I don't believe you need a cat that suits a euro 3 configuration.
Just need a quality cat.
A quality cat is one with a high amount of the precious metals that do the 'magic'
to reduce emissions therefore they are more expensive.
I used one for a XF series falcon on my LS1 and got through first time.
Sambo is spot on. It's about proper placement of the cats and the airflow meter.
Also it comes down to who is doing the drivecycle test on the dyno.
If they short shift you get less emissions and vice versa.
Mine would come close to failing on the deceleration and we put that down to the Maf being too close to the throttle body.
This is all predicated on your tune being spot on and engine running right.
E.g No misfiring etc.
Cheers
|
Something for those to consider, and might explain some of those who struggle to pass with stock equipment:
The IM240 test is actually measured as weight (of gas) per kilometre. So if you have a stock car, and modify it with 4.11 gears, smaller wheels, anything that puts the revs up, then you make more weight of gas per kilometre (as there is more revs per kilometre), and therefore you might fail. As stated above, shift points also change the result. Conversely should also be true, more gears, lower final drive ratios, etc will also help.
Food for thought.