Fuel management systems.
#1
Fuel management systems.
I put a set of VH Staggered Big Shots and a K and N high flow air filter on my 2009 FLSTCI. Runs great, no muddy accel, no backfires, etc. I noticed it's running hotter and I'm getting a little decel popping. Researched fixes. Likely the factory 14.7 AFR is too lean causing both problems. ViED and XiED will only correct to 14.0 at best ( might help the heat issue, might not). I'm considering FP3 (FP4 not compatible with 2009) but after reviewing the AFR charts (which dip into AFR 12-ish range). I'm wondering how can FP3 work with OEM narrow band O2 sensors which only srnse from 14 to 15. Is FP3 a scam? They say you don't have to have wideband sensors for FP3 but how can it work if the NB sensor only senses 14-15? Interested in your opinion, experience and some advice.
#4
Ok so closed loop switches to open loop at .976 lambda or 14.3 afr. What size sensors do you have in the bike. 2009 I believe are the larger sensors which have more range. But to tune it properly you need something like a power vision, tts or similar full range tuner. Give Fuel Moto a call, sticker shock on the PV3b. It used to be a lot less till all the shortages came about.
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Garbonzo (05-21-2023)
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