swamp2 wrote: ↑Tue Jan 07, 2020 2:32 pm
Hmmm... well, I guess I can understand how this works with the auto tune then. But that's getting into a bit more expense and sophistication than I had really planned on or thought I 'd need. Same with setting it up on a dyno. I put a modified Harley muffler (no cat converter) on the G5, certainly less restrictive than the stock guy. Running ok although getting some popping on decel, so figure it needs a little tuning. But even dead stock, I understand the bike could run better with some intelligent enrichening. When I look at the dynojet and installation instructions, it makes no mention of removing the O2 sensor. But they only have 1 map available - description is "European model Stock exhaust Stock or aftermarket replacement air filter Dynojet O2 eliminator fitted 8809-100174 ECU (Black dot)". I was hoping they'd have a broader selection of maps available. Is this map close enough? And I have to get the O2 eliminator to use it apparently? Are there more maps available somewhere?
Again, my objectives are just to make it run as well as it can within some low cost boundaries, not trying to build a monster bullet...
Decel popping is pretty normal whenever change the muffler to a greater or lesser extent . Most stock exhaust systems decel pop ... but you don't hear them doing it , because they are so heavily baffled. The stock head pipe on these bikes also have a bit of an expansion chamber in them. It's a pipe inside a pipe , with space between the two. And with the heavily baffled and restricted stock muffler ... you don't hear nothing. But as I'm sure you know , being too lean or too rich can cause it as well. POP! ..POP! .. POP! ... POP !. .. POP! EVERY TIME you roll off the throttle to shift gears, or rev the motor up under a heavy load and roll off, is a sure sign the mix is off though. When the bike is tuned , it will eliminate most of that ... it gets annoying after time. And with a good EFI tuner, you can clean up the last of that stuff if there is any left , by adding or reducing fuel in a closed throttle position. But a little bit of decal popping here or there ain't a big deal. I'd keep an eye on your plug, and your head pipe for bluing in the mean time. Blue is a lean hot mixture ... and that is what the exhaust valve would be seeing.
Dynojet... at least as of last year.... started to NOT provide the o2 cheater, or optimizer as they call it. Why ? What I got out of them after calling in, was basically they are covering their asses with CARB and the EPA. Defeating a pollution control devise is a NO.. NO.
You can't alter ANYTHING on a bike for road use as far as pollution controls ... depending or your state or fed government , or how much or little they want to enforce such laws. And Dynojet being likely being the BIGGEST target for a crack down.. I figured they laid off such things. People can't even offer for sale PC-V's in California now I believe, or shipped to a California address. And shops there as I under stand it, will get a 10, fine for putting a bike on a Dyno and alter it's fueling and etc. There was a big sell off on PC-V's last year from California retailer's if you noticed on Ebay. Anyway... if you want to tune your bike now they way one wants with a PC-V, you have buy that cheater yourself from another source.... they are about 20 bucks ? OR ... make your own for a few penny's with a couple of resisters.
Anyways... i would at the very least use that EJK . And confirm with them that they still do in fact offer the o2 cheater with their model. They are not as big as a target as Dynojet ?
There are not a lot of "canned maps" offered by Dynojet for these bikes , because they are not a popular bike. Honda and Harley... there are TONS of them. Those canned maps are usually map at their facility in Vegas I believe. HOT... Dry ... High altitude Vegas. They are usually not "perfect" , but close enough. The one in the PC-V for the Enfield that you get from them , I believe was made by Hitchcock's or Dynojet UK.... and likely on there untainted with ethanol petrol , and at or near sea level. And by their description of the map , and me looking at it here... it is basically for a stock bike , to make it a little better. The fuel changes are not radical. It's for a stock exhaust system , and a stock or after market filter. An aftermarket filter , installed in the stock air box, will not make all that much of a difference BTW. And the black dot , refers to the colored dot next to the part number . Black meaning export ECU... I believe the Indian domestic ECU's have green dot ? Tim can confirm that , or you can look at your on your bike.
