Afr Vs Performance, Economy, Pollution
06-02-2005, 02:06 AM
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Vehicle: Elantra HD / 2007
QUOTE (OdessitPashka @ Jun 2 2005, 05:28 AM)
MAF sensor is one of the main sensors that tells ECU how much fuel should be dumped, then o2 sensors take or add some more. Factors like temperature, throttle position, etc will influence the amount of fuel being dumped.
ECU uses O2 sensor only in closed loop (idle, cruise, part load). O2 sensor is used to correct AFR for better work of catalytic (emmision wise).
06-02-2005, 06:49 AM
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Vehicle: 2001/Hyundai/Tiburon
So to know the best performance for your engine youll just have to be on the dyno and keep on running it with diff a/f ratios with your safc or other piggyback, how long would that take for someone who has never done it before
Edit how much more hp should you expect if you tune it right with a i/e, ive heard nothig to 8 whp
Edit how much more hp should you expect if you tune it right with a i/e, ive heard nothig to 8 whp
06-02-2005, 09:37 PM
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Clean it? Nah... I just leave 'em alone, they last 100,000 miles before they start running into problems. When you start getting bogging down and using a lot of fuel, then you might clean it and see if it helps. Don't clean what doesn't need to be cleaned.
This guideline is good for 85% of engines out there. Most power will be found between 12.5:1 and 14:1. Its a great guide to see where you need to start tuning for.
As for fueling on a stock car, I would probably say an S-AFC (tuned well) will get 8whp on a stock car. Bolt-ons like I/H/E won't effect those numbers that much.
This guideline is good for 85% of engines out there. Most power will be found between 12.5:1 and 14:1. Its a great guide to see where you need to start tuning for.
As for fueling on a stock car, I would probably say an S-AFC (tuned well) will get 8whp on a stock car. Bolt-ons like I/H/E won't effect those numbers that much.