Wideband going lean??
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From: Sierra Vista, AZ
Wideband going lean?? Will swapping from a TR224 .563 @ 114lsa to a 231/237 .598/.595 @ 112lsa make the wideband read into the 15:1 range because of exhaust inversion? Or do I need to get it retuned that bad? Was at idle mostly, but noticed tonight ( rainy cool night) the WB was reading from 14.2:1 to even as high as 16:1 on the highway. At a light it kept bouncing around, when I left I had some small backfires...reminded me of being a little too lean?
I al thinking:
A) Tune-needs it from the TR224
B) Injector O-rings, top ones maybe sucking in air, as since I replaced them but not using the 9/16x5/16 at 1/8" I used the next size smaller, maybe they are able to bring in enough air but not leak? And I only noticed this after servicing my NXL for bad orings!
C) A leak somewhere after MAF, but I havent messed with anything other than the O-rings and since then is when it acted like this, that and the weather, cooler, and damp-been raining all day.
Any other suggestions wlecome.
I al thinking:
A) Tune-needs it from the TR224
B) Injector O-rings, top ones maybe sucking in air, as since I replaced them but not using the 9/16x5/16 at 1/8" I used the next size smaller, maybe they are able to bring in enough air but not leak? And I only noticed this after servicing my NXL for bad orings!
C) A leak somewhere after MAF, but I havent messed with anything other than the O-rings and since then is when it acted like this, that and the weather, cooler, and damp-been raining all day.
Any other suggestions wlecome.
I don't know the answer about the cam, but as for exhaust reversion, how far from the "fresh air" outlet is the wideband sensor?12" or less, then I'd say that yes, it'd be a possibility. More than that, then you should be fine.
That is, unless you have an exhaust leak you don't know about.
Good luck,
Andrew
That is, unless you have an exhaust leak you don't know about.
Good luck,
Andrew
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Originally Posted by CAT3
Will swapping from a TR224 .563 @ 114lsa to a 231/237 .598/.595 @ 112lsa make the wideband read into the 15:1 range because of exhaust inversion? Or do I need to get it retuned that bad? Was at idle mostly, but noticed tonight ( rainy cool night) the WB was reading from 14.2:1 to even as high as 16:1 on the highway. At a light it kept bouncing around, when I left I had some small backfires...reminded me of being a little too lean?
I al thinking:
A) Tune-needs it from the TR224
B) Injector O-rings, top ones maybe sucking in air, as since I replaced them but not using the 9/16x5/16 at 1/8" I used the next size smaller, maybe they are able to bring in enough air but not leak? And I only noticed this after servicing my NXL for bad orings!
C) A leak somewhere after MAF, but I havent messed with anything other than the O-rings and since then is when it acted like this, that and the weather, cooler, and damp-been raining all day.
Any other suggestions wlecome.
I al thinking:
A) Tune-needs it from the TR224
B) Injector O-rings, top ones maybe sucking in air, as since I replaced them but not using the 9/16x5/16 at 1/8" I used the next size smaller, maybe they are able to bring in enough air but not leak? And I only noticed this after servicing my NXL for bad orings!
C) A leak somewhere after MAF, but I havent messed with anything other than the O-rings and since then is when it acted like this, that and the weather, cooler, and damp-been raining all day.
Any other suggestions wlecome.
That's a major increase in air flow.
Doesn't seem like reversion would lean you out...probably would push it rich at idle. Poor efficiency at idle.
I think it wants more fuel.
FWIW. joel
