Failed emissions today
2nd Gear
Joined: Jun 2005
Posts: 848
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RE: Failed emissions today
I cant believe you guys have to go through this. We just get any old mechanic to give us a road worthy certificate (consists of making sure the car has 4 wheels/tyres and a running engine.) . . . . I love Australia.
3rd Gear
Joined: Feb 2005
Posts: 1,580
From:
RE: Failed emissions today
ORIGINAL: TomRitt
14.7 is what you want off boost, under boost is a different story and you want to richen the mix to around 12.3. Also remember we have a 1:1 rising rate fpr, meaning for every 1psi of boost, we gain 1 psi of fuel pressure so unless you run out of fueling, your a/f should stay the same no matter what boost
ORIGINAL: Yuikio
I thought of something else...by a "perfect" a/f ratio did you mean stoichiometric, or perfect for making power at altitude? Because those are two different things. Actually, you shouldn't be at 14.7:1 anyway, you should be richer than that. That's how car engines work. But i'm rambling.
I still say turn up the boost, if all things (like fuel being squirted) remain equal, more air with same amt of fuel should give you a more emissions-friendly ratio.
I thought of something else...by a "perfect" a/f ratio did you mean stoichiometric, or perfect for making power at altitude? Because those are two different things. Actually, you shouldn't be at 14.7:1 anyway, you should be richer than that. That's how car engines work. But i'm rambling.
I still say turn up the boost, if all things (like fuel being squirted) remain equal, more air with same amt of fuel should give you a more emissions-friendly ratio.
The hippies in Colorado like to count the windows downtown when they've hiked to the top of a mountain, and nasty brown car exhaust makes that difficult for them. Ergo, emissions tests.
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j_ripper19
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Oct 30, 2008 11:51 AM
