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A/F 29/1, ignition timing is jumping, mileage is terrible

519 Views 7 Replies 3 Participants Last post by  MoHo
2004 rsx-s. It has Hondata k-pro and after the last snow storm it has been acting funny. At some specific speeds with throttle barely pressed in it will start kind of jerking a bit and I lost 150kms range after I gassed up. Noticed that my A/F was at 30/1 while driving and at idle, but sometimes goes down to 14.7/1 momentarily. I have no idea what the problem is. Please help


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Why do you think tps? It looks fine to me. This was while I was going through gears so of course it would move up and down. I’m more concerned about the 32/1 A/F value on the top of the screen…
I was thinking O2 sensor and your inj. duty cycle seems way low to me even at idle? It is true that t.p.s on the RSX are known to fail.
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