Why?
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New Member
Joined: Sep 2016
Posts: 70
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From: west des moines, iowa
Why?
1987 xl883l EFI got rid of PC5 and went OEM- reset my ECM and installed all new OEM o2sensors still get a code on front o2 sensor though it bench tests OK- also- does anyone out there run hotter plugs than OEM and with what results
thanx! - tommy
thanx! - tommy
Last edited by redsox; Mar 26, 2019 at 02:53 PM.
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Joined: Jun 2007
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From: Bedford UK
Tommy, lets just review what you wrote! No 1987 Harley ever had EFI or an ECM or O2 sensors, so can you tell us what year and model bike you have? Thanks! As for spark plugs, unless you have done other mods I suspect stock ones will be fine.
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From: US
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New Member
Joined: Sep 2016
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From: west des moines, iowa
my fault! fat thumbs- 2007 xl883l EFI first year for FI. the PC5 was junk-for 2 years I rode with all the generic maps and it was a pig-supports solution? DYNO IT for another 200$? and now they want you to go back to OEM parts cause their product has problems (after all these years) The plugs? has anyone had problems with a hotter plug. I know what I get with OEM plugs hence the question.
Seasoned HDF Member
Joined: Feb 2007
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From: Edmonton Alberta Canada
They already run too hot in OEM trim. If your PCV is no good why wouldnt you just go to a newer model and have a bike that runs good, going back to stock is a waste of time.
Last edited by HOTLAP; Mar 26, 2019 at 08:14 PM.
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Joined: Dec 2014
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From: USA
That makes more sense...EFI became standard on all Harley's in 2007.
Yes why are you converting everything back to stock? What modifications have been done to the bike?
Check out DK Customs or Fuel Moto for the PowerVision tuner with Auto Tune. Many on the forum use them for a reason...one of the best on the market IMHO.
Just google "Why run hot plugs?" You can damage your engine with hot plugs if you do not use the correct heat range....if it is too cold, you only foul your plugs. So better to stay on the colder side IMO
Yes why are you converting everything back to stock? What modifications have been done to the bike?
Check out DK Customs or Fuel Moto for the PowerVision tuner with Auto Tune. Many on the forum use them for a reason...one of the best on the market IMHO.
Just google "Why run hot plugs?" You can damage your engine with hot plugs if you do not use the correct heat range....if it is too cold, you only foul your plugs. So better to stay on the colder side IMO
Last edited by hscic; Mar 27, 2019 at 12:43 AM.
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