Now i dont have easy access to a dyno in Thailand , but I have been carefully and very conservatively creating new maps for my S4 on my PC and then uploading them to the bike.
My Custom base map done on a dyno has very good for 2 years use but the low speed running from tickover to 3000 around town was lumpy and glitchy...yes i know its a Ducati it is normal but NO! I have cured it .
A chance encounter with a Dynojet operator on holiday in Pattaya ....gave me some very useful tips on low speed running and PC111 maps, he said it was common for maps to be setup for mid and high revs and max torque but the low speed cycle was usually overlooked due to time and cost constraints . but he said by upping the 500,1000,1500 all the way up to 5-6000 rev range o% 2% and 5% throttle openings by 1-3% especially when normal maps says Zero can have dramatic effect on low speed running ,making it smoother and cleaner .
I was sceptical but made up a series of maps concentating on the low end cycle and have now tried them,The answer is amazing I can trickle through traffic with no glitches ,the engine is runnig smoother between 1000 and 3000 RPM i can even ride in 6th gear at 30mph with no hesitation and open the throttle the bike does not snatch but powers into the Fat torquey midrange 3500-6500 and on cleanly to 9500rpm as before .
Another benefit is that this mod looses a little engine braking ,not as much as an APTC clutch but powering into and around bends it much smoother and easier top maintain a higher speed ,
and in low speed manouvering i could dodge round a cone course today in the local tesco carpark without slipping the clutch all the time thats really nice. gear changes also seem smoother.
I am generally happy with progress , I still think the transition from 2500-3000 rpm could be a bit better and will keep working away at it .
Now that the bottom and midrange are perfect I have noticed a slight flat spot at 8000 rpm and examining my maps I think that may benefit from a tweak .
The important thing is i store all my old maps and log the details of success and faliure .
One fortunate thing is that my base map is so good that all the problems are down to lean running not rich , so i have not had to reduce any % to minuses yet Which my new friend tell me is the dodgy bit as too lean can damage the engine more than rich .
Yes it will have to be dynoed again somtime but I cannot feel and downsides to what i have done only benefits so far .
There are now 4 dynos in Thailand sadly the only local; one is now scrap after its owner died and his wife sold it for scrap'idiot'.the other 4 are all in Bangkok 2 are for cars only ,one of the bike dynos is for clients of a certain company , which means trying to get use of the other one which is run by Dirtbike shop.
I was once scared of EFI and a head in the sand carburettor head but now i can see the benefits and ease of tuning EFI ..I am a convert.
Jerry Monsterman
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Jerry
That is an awesome skill to have.
Tony. [clap]
Quote from: koko64 on January 08, 2010, 02:47:49 AM
Jerry
That is an awesome skill to have.
Tony. [clap]
its only common sense and a bit of patience and method.
Mind you common sense is not that common ..look at the world .
I got a bit complacent ,as i had not reset the TPS for a few months ....decided after getting to map generation 5 that ,maybe the low speed grumps might benefit from a TPS reset and sure it was only 136mv , 30 minutes work was worth it set at 150mv much crisper and smoother now. maps are getting better each time but i need a gastester to really get it perfect.
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MONSTERMAN
jerry,
i am as you once were. how do you do it without getting on the dyno? i'm in malaysia and if you complain that thailand only has 4 dyno workshops, here there are only 2 and they're both in Kuala Lumpur. and i'm in penang.
hope you can share a little of your expertise now. i ride an 04 monster s4r with termi slipon and PC3 to manage the engine. like all ducs, you've mentioned it, it's glitchy all across 1k-3k rpm. and when i downshift it's even backfiring now. haven't been for a tune up for a while now. appreciate it if you can help. thanks mate.
Fruity the crucial thing is to have the bike on perfect tune , Valve shims ,TPS,balance etc before meddling with maps, also lower gearing helps a bit .the maps I had on my PC111 were good for power and midrange but harsh ,they had O fuelling at the 0 and 2% throttle openings all the way up the rev range i added a little at the o and 2% openings up to 5k only 1 or 2 fulling ponts and then rode the bike i also did a few changes carefully at the 5% setting ,By map 3 i was certain I was on the correct track as the bike was smoother at low revs and the transitions wer nice .i then became apparent that as the bike smoothed out there was a lean spot at 8000rpm which i cured ,on a couple of maps i added too much fuel which removed engine braking by too much so i removed dome of the low throttle extra fuel point by pont until a nice balance between smooth decelerration and engine braking was achieved.
I keep all maps stored on my computer and careful notes. that way u can experiment without worry and always go back to a good map. [drink]
PM your number and i will call u .
jerry
thanks jerryz. sorry for the late reply. on your advice i think i should do the major tune up first. it is due for valve adjustment, fuel filter change, throttle body servicing etc. this is going to whack a hole in my pocket for sure. so i guess there's no point in adjusting the map yet as all that work has to be done. i'm also currently trying to change the gear ratio. looking at going down to 14T on the front and up one tooth to 43T at the back. what do you think? did you change yours?
i sometimes ride to thailand with some friends from KL and penang but haven't made it all the way to bkk. it'd be nice to link up and exchange info. my mobile in malaysia is 60 17 4302121.
cheers.
On my S4 I have 15T on front and 43 on back it still reaches 220kph maybe more but has a big fat midrange and accelerates like a cheetah on heat it is much nicer round town .try the 43 on back before changing the front.
I do my own shims and tuning etc i have the EMS shim kit and many Ducati tools most homemade.also have a carbtune balancer.
yes do a service before messing with maps.
thanks will be in touch.
please look me up if ever you're in penang for any reason. you have my mobile.
cheers.