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 Need PCV map (or some advice)

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Gundy




PostSubject: Need PCV map (or some advice)   Mon Feb 27, 2012 11:35 pm

Bike mods:

Q4/Megabomb with smaller diameter insert (part number 040630 for Powercore, 1-1/8" diameter opening; the standard Q4 insertcomes with a 1-1/2" opening)
Stock air filter
Flapper removed

Anyone have a map they really like for sea level?

I am currently running the map for the 290, Full FMF, stock filter, flapper removed that is on the dynojet website. Runs great with the regular Q4 insert, but gets crappy MPG. Way too rich for the smaller insert since I smell strongly of partially burnt fuel afterwards.

-The map for full FMF with no airbox mods looks waaaay leaner so I am afraid to try that one.
-The map for stock exhaust with flapper removed looks in the ballpark except it lacks the richer midrange acceleration that all the FMF maps seem to have.

Interestingly, the Full FMF maps only seem to add large amounts of fuel in the midrange at higher throttle positions, but actually look the same or leaner as the "airbox mod only" map. HMMMMM
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WRXer




PostSubject: Re: Need PCV map (or some advice)   Tue Feb 28, 2012 12:03 am

I don't get it. I really don't. Why can't people follow the directions provided by dynojet? Every PCV post on this board is about people running a map they have no business running & have no ability to follow directions. YOUR RUNNING THE MAP FOR A BIG BORE FULL SYSTEM!!!!! FOR CYING OUT LOAD & your worried about some insert?
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Gundy




PostSubject: Re: Need PCV map (or some advice)   Tue Feb 28, 2012 7:24 am

Get off the thread if you have nothing to add. Its what the PO put in there. If you have a map that might work, please share. Otherwise, don't read mapping questions in the mapping forum late at night. Stress will kill you quicker than anything. Take a break.
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BuilderBob

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PostSubject: Re: Need PCV map (or some advice)   Tue Feb 28, 2012 7:20 pm

While I won't express myself nearly as forcefully (and inappropriately) as WRXer, I have to agree that the map you are running is way out of adjustment for a stock bore WR.

That said, I think you should install a map that more closely resembles your current setup. I would suggest map #22-016-002, which is for stock exhaust, stock air filter and the flapper removed. Since you're running the smaller insert in your exhaust, it probably comes close to the back pressure in the stocker. Try it, I bet it will be an improvement.

And just in case you think I'm just another wanker chiming in on your thread, my bike has the 290 kit, full Graves exhaust, EXUP removed, AIS removed, flapper removed, PC5 & Autotune module. Soon to get a fully ported head! wink
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Gundy




PostSubject: Re: Need PCV map (or some advice)   Tue Feb 28, 2012 7:51 pm

Thanks, BuilderBob. Just the kind of feedback I was looking for. I'll try that one, and I also thought about two variations on the Dynojet 290/FMF/flapper map: all values at 75% of original, and another with only the richest values scaled back to 66% which gets them back closer to the other 250 maps. None of them would be dangerously lean at least just from eyeballing the other maps. Off to the garage with the laptop.
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BuilderBob

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PostSubject: Re: Need PCV map (or some advice)   Tue Feb 28, 2012 8:12 pm

Gundy wrote:
Thanks, BuilderBob. Just the kind of feedback I was looking for. I'll try that one, and I also thought about two variations on the Dynojet 290/FMF/flapper map: all values at 75% of original, and another with only the richest values scaled back to 66% which gets them back closer to the other 250 maps. None of them would be dangerously lean at least just from eyeballing the other maps. Off to the garage with the laptop.

No problem.

I wouldn't screw with the values too much after installing the map. Without a dyno run or an Autotune module, you're just guessing.
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Gundy




PostSubject: Re: Need PCV map (or some advice)   Wed Feb 29, 2012 1:23 pm

I downloaded the map you mentioned (stock exhaust, no air lid), and on the whole it runs really smooth and cleaner for the most part. Definitely a smoother transition up through the rpms, before there was a little hit moving from the sluggish, over-rich midrange to the cleaner top-end. Hit 81 on the highway where before 76 was tops. I didn't ride long enough to see if mpgs improved but I would think they would have to compared to what I was running before. It should be a much better way to go until I can pony up for Auto Tune, which I am now realizing is a must for a bike that has some non-standard mods. After looking at a few custom auto tune maps that were sent to me, it was interesting to see that they were almost all leaner in most cells than the base Dynojet map, even with a more open airbox. Thanks again for the suggestion.
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BuilderBob

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PostSubject: Re: Need PCV map (or some advice)   Wed Feb 29, 2012 5:58 pm

Glad it worked out. If you get the Autotune module, you'll need to weld a bung into the mid pipe for the O2 sensor if you don't already have one. Autotune comes with a bung to weld in.
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Gundy




PostSubject: Re: Need PCV map (or some advice)   Mon Apr 23, 2012 1:19 pm

Just an update here. I have gone back to the standard Q4 insert with Megabomb combo and decided to switch maps to the "Full FMF with stock air filter" map from Dynojet, and it seems to be the closest yet to being consistent throughout the RPM range. My airbox only has the flapper removed, so the only way it really differs from stock is that there is a hole where the round metal thing was, so not opened up in any huge way. I think actually taking the door off the airbox is what Dynojet considers to be "no airbox lid". So anyways, this seems to be working well as long as I wear earplugs on longer rides. Additionally, they do not specify which FMF muffler, so I would think it would have to be appropriate for a powercore as well, which flows a little better. The Q4, being slightly more plugged up, probably helps offset the small amount of extra air coming in through the flapper hole. I will inspect the spark plug in a few hundred miles just to make sure its not running too hot/lean, and if so will just glue a plastic panel over the top hole. A lot cheaper than messing with autotune!
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germanwr250r




PostSubject: Re: Need PCV map (or some advice)   Tue Apr 24, 2012 10:19 am

You're doing silly thinks. I'm sure they are meaning the Airboxflapper with Airbox lid. The silver think is a valve, that closed at the same time as the exup. Buying a new airbox could be mich more expensive than a autotune...
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Gundy




PostSubject: Re: Need PCV map (or some advice)   Tue Apr 24, 2012 12:58 pm

So you think the small hole from where the silver round valve was makes a big difference in air flow? I was just thinking that a completely stock airbox (less flow) and a power core 4 (more flow) is probably not much different than removing the flapper (more flow) and using a Q4 (less flow). If I cover the hole where the valve was, I would think it very similar to a stock box. At least close enough for that map anyways....the bike does not pop at all on deceleration and pulls well from low rpms all the way to the limiter.
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germanwr250r




PostSubject: Re: Need PCV map (or some advice)   Thu Apr 26, 2012 6:46 am

That little hole, would change nothing i think. But the silver valve close the intakte, so the Air comes only through that little second entry (near the normal entry). The valve close the airentry only in special situation to make the bike noisy. At the same time, the Exup closes (low flow in the intake, low flow in the exhaust.

Most pc5maps are to rich, so maybe your bike won't run too lean, if you remove the door. But i wouldn'ttest it this way. Of somethink goes broken, its your own mistake.
And if its too lean you will fix it with glue, only for a few months, than you hate this, and buy a new expensive airbox.
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Gundy




PostSubject: Re: Need PCV map (or some advice)   Thu Apr 26, 2012 8:12 am

It is interesting you mention how rich the PCV maps are. Dynojet probably builds in a margin for error so as not to fry peoples engines. The precise tuning to the lean side is what Autotune is intended for. From what I have read, the acceptable (but not necessarily optimum) air-fuel ratio for this bike ranges from 13 or even a little lower on up to almost 14 (not sure of units).
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germanwr250r




PostSubject: Re: Need PCV map (or some advice)   Fri Apr 27, 2012 2:53 am

You can programm the autotune, can set it in 12,8 airfuelr. or much leaner to 13 or 14.
With the normal maps (test stockmuffler map, stockmuffler and leovincemap, Leovince-gyt-r can) i have a airfuelratio of 12,5 and 12,3 or CO 2,9 and 3,2. Chats a Bit to rich- 12,8 should be the best for power, but you have lots of black stuff in your header, muffler and the catalystic converter (hope the right word) goes broken (think the valves get black too), with 12,8(!)... At my bike all maps seems to be too rich..
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