Smiley
Last Christmas I removed the OEM air box and installed a Trask Powerflow air filter to compliment the Indian slip on Stage 1 exhausts. I also purchased a PVCX and updated with a custom map from FuelMoto. All was going well but after about a month the engine warning light came on with error 520209-5 O2 sensor heater 1 pre/front. Took bike into the shop and they replaced the O2 sensor, but could not get rid of error message. Mechanics contacted Polaris and advice was the bike is running too lean and to put original air box and filter back in the bike.

I’ve put the original air box back in and kept the STK map the dealer had on the bike. Back to dealer who had to replace the rear O2 sensor to clear the error message. O2 sensors were apparently covered in a white powder.

Keen to understand if anyone has had similar problems when putting a hiflo air filter and PVCX on the Scout? I’ve not seen any problems from others who have added hiflow filters and maps. Any issues with the PVCX US djt maps on the Aussie bikes? Also keen to know if this set up caused the O2 sensor failure or if it was just coincidence. I’m keen to try the setup again, but don’t want to risk destroying another two O2 sensors without a better understanding of what happened. Dealer thinks it is the hiflow filter and bike running too lean.

Thanks for any advice. Smiley
2016 Scout (red) Canberra, ACT
IRMG #AU 100935
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hallzee
Ive been running a hiflow filter for about 2-3 months now and havent had a single issue or warning light, im still running the standard ecu map aswell so i cant speak to the PCVX issue
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Smiley
Thanks Hallzee. Running a hiflow filter on the standard map without a problem - that’s great. Makes me question the dealer advice. Thanks for the feedback.
2016 Scout (red) Canberra, ACT
IRMG #AU 100935
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hallzee
All good🙂
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Vagabond
So the map you got from Fuelmoto should have been tuned for your air filter and exhaust combo so your AFR should be all good.
To my knowledge it shouldn't be running lean using what Fuelmoto has given you.
I've been running a "Hartzell" type air intake and gutted stage 1 pipes with 1st, a Dobeck EJK for about 8 months and for the last year or so a PVCX.
Now this is where my memory fails me but i think it was when i 1st installed the PVCX that i had the same code come up.
At the time when i 1st got the PVCX i was running the Dynojet tune for my intake/exhaust combo as Fuelmoto had't released 1 for the Scout.
Can't say i changed the O2 sensors out though..think i just cleared the codes a few times using the PVCX and they have never come back.
Bear in mind if the dealer is correct and you are running lean you can adjust your AFR using the Powercore C3 software for the PVCX though as As i said previously the Fuelmoto tune should be good to use.
You can also contact Fuelmoto and ask them....the customer service is excellent.
And you know what?? now i've written that last sentence about contacting Fuelmoto...i reckon that's what i did when i got the code.
Can't think of exactly what they told me but it was along the lines of not to worry as it may have been the ECU getting used to new setup.

But i would send them an email or contact via Facecrack and ask their opinion.
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Smiley
Thanks Vagabond. I’m thinking that this whole problem started with a faulty O2 sensor. I have been in touch with FuelMoto and have received a new map for my set-up. Currently running the stock air box and filter with stock map whilst I sorted out the problem. Now I have all the pieces ready to go I’ll make the changes, reinstall the Trask and remap. Looking forward to the improved performance again, was really disappointed when I had the problem!
Thanks again for your advice.
2016 Scout (red) Canberra, ACT
IRMG #AU 100935
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hallzee
Hopefully there are no more problems, bit do let us know if you get any problems, 
Im interested as im considering getting a PCV tuned for my intake and exhuast upgrades
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MickB
Smiley I don't know how old you post is as 02/04 doesn't mean much. I've a Zipper intake with EJK (they advised me to disconnect the O2 sensors) and Crusher pipes. All American Motorcycles in Ringwood advised me the fault code on the dash comes up as the computer thinks there's a problem.
Solution is to disconnect the O2 sensors and the problem will disappear.
All American Motorcycles fitted O2 Eliminator Plug Ins on my Scout 2 weeks ago and no fault on the dash.

All American Motorcycles re-tuned the Scout on their Dyno - 100 horses at the back wheel vs stock Scout 84!
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Smiley
Thanks for the feedback MickB. You’ve got a great result with your setup!
I’ve not had the problem return, so think I’ve got it licked. Will keep in mind isolating the O2 sensors if it returns.
Happy riding - thanks again.
Cheers Smiley
2016 Scout (red) Canberra, ACT
IRMG #AU 100935
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srd0060
O2 sensors sometimes fail due to contamination in the fuel, changing the air box and slip-ons with a remap shouldn’t hurt it unless it was leaned off with the remap. The white power could be the contaminates ie. E10 mixed with other fulels, If your getting your fuel from the same shop every time I would change brands there maybe a cross contamination of E10 and what ever(E85) who knows no fuel station is trustworthy.
2018 Scout, Thunder black, Beach bars, DART screen Bobber Rims, Stage 1.
IMRG  AU 101571
Ulysses  67236

Canberra, ACT
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Smiley
Thanks srd, I came to the same conclusion after more research. I’ve also stayed with 98 and not had any problems.
2016 Scout (red) Canberra, ACT
IRMG #AU 100935
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srd0060
Smiley wrote:
Thanks srd, I came to the same conclusion after more research. I’ve also stayed with 98 and not had any problems.

i only run 98 and never have issues and I must admit I get better results from BP.
2018 Scout, Thunder black, Beach bars, DART screen Bobber Rims, Stage 1.
IMRG  AU 101571
Ulysses  67236

Canberra, ACT
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