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Oct 21st, 2011, 12:59 pm
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#1 (permalink)
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Member
Join Date: Aug 2011
Location: Mahtomedhi, MN, USA
Posts: 68
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Cold weather running
I'm wondering how others bikes run in the cold. As the temperatures have been dropping, my ST2 has been running quite a bit better. At 40 deg F, the front tire comes off the ground under normal acceleration without dropping the clutch. That just does not happen when the temperatures are warmer. I'm wondering if this is typical for others.
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98 ST2 - STILL stumbles like a drunkard
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Oct 21st, 2011, 1:23 pm
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#2 (permalink)
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Senior Member
Join Date: Feb 2007
Location: San Diego, CA, USA
Posts: 1,389
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Sure. The cooler denser air will supply more oxygen and you'll get more fuel when the air temperature sensor signals the ECU to supply more fuel. More fuel plus more air equals more power.
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I receive no financial benefit from the sale of any Ducati-related product or service.
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Oct 21st, 2011, 5:51 pm
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#3 (permalink)
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Still needs a life.
Join Date: Mar 2004
Location: Edmonds (near Seattle), WA, USA
Posts: 9,116
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Your gas mileage will drop, however.
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Bill Anderson & Darkwing Duc (06-ST3s, black) Edmonds, WA. USA
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Oct 22nd, 2011, 12:30 pm
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#4 (permalink)
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Mr Leakered
Join Date: Jul 2008
Location: Lynnwood, WA, USA
Posts: 3,904
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It depends. Once it gets too cold, the engine won't stay warm enough. I usually add some duct tape to the right side of the radiator in the winter when the throttle response drops off.
Yes, though. Fall is primetime riding weather and scenery.
Have a good one.
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tony b
2001 ST4
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Oct 22nd, 2011, 11:24 pm
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#5 (permalink)
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Member
Join Date: Aug 2011
Location: Mahtomedhi, MN, USA
Posts: 68
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Quote:
Originally Posted by Shazaam
Sure. The cooler denser air will supply more oxygen and you'll get more fuel when the air temperature sensor signals the ECU to supply more fuel. More fuel plus more air equals more power.
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Sweet. I didn't realize the ECU factors in air temp. Thought it just looked at pressure. Suddenly turbo intercoolers make a lot more sense.
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98 ST2 - STILL stumbles like a drunkard
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Oct 25th, 2011, 10:45 am
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#6 (permalink)
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Senior Member
Join Date: Mar 2004
Location: Greater Worcester Area, Massachusetts, USA
Posts: 1,706
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5 "gazintas" for the older ECU's:
TPS
Barometric pressure
Air Temp
Engine (coolant) temp
Engine position (timing/RPM)
Add O2 on the newer machines for the 6th input.
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Stick
Try this home-cure-all: Shove a DUC between your legs.
Present DUC: 2003 ST4S Yellow!
Past DUCs: 1998 ST2, 1981 500SL Pantah, 1985 MHR Mille, 1987 Paso Limited, 1995 916 mono
Other brands (past):
1978 BMW R100RS Motosport, 1978 R100S, 1981 Moto Guzzi V50 Monza (wife's bike), and a long list of Hondasakizukis
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Oct 25th, 2011, 11:53 am
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#7 (permalink)
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Prolific Poster Award
Join Date: Mar 2008
Location: petrolia, ontario, canada
Posts: 5,848
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Bonus there is less mosquitos out there too!!!
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2011 Red Multistrada Touring
08 Hyper S gone but not forgotten
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Oct 25th, 2011, 10:43 pm
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#8 (permalink)
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Senior Member
Join Date: Nov 2008
Location: phoenix, az, usa
Posts: 873
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And your probably running a bit rich in the warmer temps, the mapping or set up not being perfect.
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