Guys, I have my custom mapped with a standard filter, if I change that for a performance filter such as piper cross do I need a remap or will it still be close enough? Does a performance filter make it richer or weaker mixture?
Yes, I'm afraid you will need a remap. The racing air filter works exactly like you exhaust, the exhaust lets gasses move easier and faster in the armosphere, the filter let's more air to be sucked through the combustion chamber. I suggest you go and buy a MWR "HE" filter (much better in many ways than most racing air filters we'vve tested) and don't use it until you will be able to tune the bike on the dyno or on the road through Dynojet autotune.
Autotune will only be as good as the base map its working from, oh, as for the filter, it will make next to no difference, have it done as and when, dont rush out trying to get it done if you dont want to.
From here http://www.hondacb1000r.com/mb/viewtopic.php?p=126791#p126791 So my reading into that is that you don't need a map as long as after each of your first few runs you check the auto tune tables and give any that have reached there maximum change a step up and go run again
I wrote a load of info on autotune on 1000rr.net if you search. Been working with it since 2007.. Once AT max's out you will need to accept the values this will update the base map. you then need to zero the autotune table to gain another 20%'s worth of correction, you need to keep checking now and then to see where your AT table are at. AT is not fully automatic and needs keeping in check, also you could argue that AT is too late what I mean by that is the correction happens after the throttle in other words on a power run it will use values that it obtained before then update the table and one other thing AT only maps areas that are used so if you have not been on full throttle it will not map it.
Ok Arthur, thanks mate, but can I get away without a new remap? I am easily confused, must be my age lol
Hello Arthur, I get that the auto tune is reactive and not proactive, how is a dyno much different? Surely your relying on the tuner to bung in a good bunch of data as a starting point? (having never done or even seen this done i admit i actually have no idea) And for most people on here a stock euro map from Dynojets website is going to be suitable as a starting point ... lets face it there are enough people running filters and cans without PCVs Cheers, Fletch
lol me too mate.. Lets just say this your custom map is only 100% correct on the day of dyno, the min you take it out side and the following day unless mB, temp, Hum, etc are the same the map will be slightly out thats the big advantage of AT it will keep the custom base map in trim from day to day and when bike spec changes even as the air filter clogs it will correct the AFR.. I can tell you that AT hardly ever maps out side 8% of the base AFR! Even when swapping from one filter to another I have just moved from a BMC race filter to a K&N as I want better filteration for the road, as far as I have seen so far AT has mode no changes worth talking about... At the end of the day even with HRC race filters (And they are just open mesh!!!) the power gains and correction is soooo small its just not worth talking about. When racing and looking for the 1/2bhp here and there then thats another matter.. In short NO.....lol
Yeah the map is only as good as the dyno opp, if he does a poor and rushed job the map will be poor for good! The dyno opps task if to look at AFR and power best AFR 13:2.1 does not produce best power!! If you want best power from AT you will have to write a custom target AFR table for AT to target.. Thats not an easy job as each motor runs slightly different and the environment is always changing so what may produce best power one day may not the next! When the dyno opp looks at the AFR reading and power on the dyno he will use his experience and expertise to choose the best values for the given cell, so when he see's a dip in power he can add a value that will counter it. AT is not intelligent it only targets the AFR that has been set and can not see whats happening at the rear wheel.. As for people that don't map bikes with cans and filters they have no idea what AFR the bike is running, it could be lean and peaky on the throttle it could be rich and sluggish with flat spots?? I can ride a bike that imo is sh#t re mapping and fueling but the owner may claim its spot on... some people don't like to spend the money that they don't think is necessary in other words if the bike starts and go's thats good enough however they could have a much better bike for the sakes of tuning. Honda spend a huge amount of time perfecting fueling even if they do have to meet certain requirements so imo it pays to correct any changes you have made to the motor to get a smooth and tractable package.. The maps on dynojets site are produced to get you in the ball park they are not just copys of other peoples maps if you do run other peoples maps the dyno opp may have leaned of a over rich bike to counter poor AFR the maps on dynojets site have been looked over to make sure they are safe for use on any other bike so if a over lean cell is seen they will have added fuel to be sure its somewhere in range, this may not be the case with your mates map! You run the risk of running a over lean map if you share them, lean motors always produce peak power but they are hard to ride and dont last long...
Ok i think i get it, so your tweaking the PC settings not only to target AFR but to also against the power curve .. so if you see it flattening or dipping in certain areas this can be tweaked up and adjusted to compensate Where as autotune just targets AFR and sticks with it
Thanks Arthur, I know lots of things affect the engine tune I was just worried as a layman that I would end up with a lean burn if I change the filter,
while i like the idea of tech ... Fuck it dyno tune it is .... Anybody know anything of the guy tuning at the new dyno at Honda Ecosse in Aberdeen?
I would say not mate the amount of flow is minimal, if you had added a supercharger then maybe....lol If you can afford a TTS supercharger then my advice is GET ONE...lol
