lean deceleration
08-03-08, 03:28 PM
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lean deceleration
im having a major problem with my car i dont know if its the o2 or what. But when im driving an it starts to get warm my o2 starts to read around 13.6 to 14.0... its not a wide bands its a apexi turbo timer. an i have a hks fcon with a fcd. The motor only has 110 miles on it with a medium streetport... i have the fcon set at 4 an my motor runs fine till i let off the gas an then it goes right to 20.0. i checked my tps an its fine might be outa ajustment... would having stock injectors on a ported motor do this...
08-03-08, 08:11 PM
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You should have a local tuner help you out with things like this. Everybody needs to start somewhere, but it's not such a good idea to try tuning on your own with only the internet as a guide.
It is accurate enough for a good tuner to use. He would have misdiagnosed the reading even with a wideband AFR meter. It goes to show that an AFR meter does not make up for education and experience, and it is not necessarily a good instrument to rely on for accurate tuning.
08-03-08, 09:01 PM
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Anyway, no AFR meter will allow for total tuning of the engine. It is simply a tool to help with some aspects of tuning.
08-04-08, 02:11 AM
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im no novice 
lol well yea i know that a narrow band a/f wont give me a good reading but it still helped me know that i was leaning out during decel. as for how it seem its ok it kinda sounds a little wierd but as soon as i get on the gas its normal. it might just be cause im still learning the sounds of street port over the stock port. if that makes any sence
lol well yea i know that a narrow band a/f wont give me a good reading but it still helped me know that i was leaning out during decel. as for how it seem its ok it kinda sounds a little wierd but as soon as i get on the gas its normal. it might just be cause im still learning the sounds of street port over the stock port. if that makes any senceDeceleration enleanment is normal. Ignoring the AFR reading, does everything else seem OK during deceleration? If so, then I wouldn't worry about it.
You should have a local tuner help you out with things like this. Everybody needs to start somewhere, but it's not such a good idea to try tuning on your own with only the internet as a guide.
It is accurate enough for a good tuner to use. He would have misdiagnosed the reading even with a wideband AFR meter. It goes to show that an AFR meter does not make up for education and experience, and it is not necessarily a good instrument to rely on for accurate tuning.
You should have a local tuner help you out with things like this. Everybody needs to start somewhere, but it's not such a good idea to try tuning on your own with only the internet as a guide.
It is accurate enough for a good tuner to use. He would have misdiagnosed the reading even with a wideband AFR meter. It goes to show that an AFR meter does not make up for education and experience, and it is not necessarily a good instrument to rely on for accurate tuning.
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08-04-08, 03:30 PM
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Engine, Not Motor
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im no novice lol well yea i know that a narrow band a/f wont give me a good reading but it still helped me know that i was leaning out during decel. as for how it seem its ok it kinda sounds a little wierd but as soon as i get on the gas its normal. it might just be cause im still learning the sounds of street port over the stock port. if that makes any sence
lol well yea i know that a narrow band a/f wont give me a good reading but it still helped me know that i was leaning out during decel. as for how it seem its ok it kinda sounds a little wierd but as soon as i get on the gas its normal. it might just be cause im still learning the sounds of street port over the stock port. if that makes any sence
08-06-08, 03:38 PM
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yea i adjusted my tps the other day an it helped alot not it only does it when i let all the way off the throttle im still in break in thought so it was just a scary thing for me to see
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