Anybody got the PCV with Autotune fitted and had it dyno'd to see what BHP it makes and what the air / fuel ratio is like ?
My RR7 back in 08 We tested AT and looked at the sensor activity, incredibly even when sensing the end of the exhaust both the dyno AFR and AT we're the same! Bike has a custom map and AT its been spot on in the last few years... It's not fully automatic like some people think but does keep the base map in trim. Remember best AFR does not make best power, you can program individual target AFRs for the rev range but this is targeting 13:2.1.
Thanks for the info Arthur. Excuse my stupidity, but have you shown one graph with a custom map and one with a standard map with AT adjusting the AFR and they are virtual identical ? or are you saying its a custom map adjusted by AT ? if so what is the second graph. Sorry if I m being an idoit and the help is appreciated.
Not at all mate, take into account that this is the day the base map was created thus Autotune has little to trim, I check it from time to time and its always busy trimming the base map as you would expect, some times it's maxed out and the new values need to be accepted to correct the base table, then Autotune has another percentage of correction available to it. How it works: you have a base map table and an Autotune table, also Autotune has a target AFR to aim for and a percentage of correction to stay within norm 20%, Autotune when active creates a new table that the PCV sticks to however it can only adjust that table to within the percentage set by the user this way if any problem with the sensor Autotune will not lean off the motor too much and cause engine damage, the base table is only corrected when the user accepts the new values created by Autotune, then the base map is re written with new values and the Autotune table can be reset to zero then Autotune has another percentage worth of correction that can be applied to the new base table...
Thanks for the detailed explanation. I now understand the AT unit corrects the base map by + or - 20% to achieve the target AFR. One more sill question if you don't mind. Is the base map the original one the PCV is shipped with or set by AT on first installation and then continuely trimmed to achieve the ideal AFR ?
The base map is the one that's loaded by the installer, in my case a custom map was made for AT to keep in trim, if you wanted to skip the dyno setup then you could load a map from the site and run the bike, problem you would have is Autotune will only map the area you have been so unless you do full throttle runs to the red line it will not map it (it only maps where it's been). Then you would have to keep accepting the values created by AT and re run the bike, you'd have to keep doing it until ATs corrections stay with in the percentage set... not easy on the road or even the track to get consistent runs for AT to map...that brings me to ATs downside you could argue that AT is too late, or in other words the correction only takes place after the cell in question so over a run from 0 to red line and 1 to 10 throttle position the changes are made after the run, so your good AFR would be on the second quarter mile as it were... So what's the point you ask, we'll IMO 20% is a wide margin and in the real world it's a worthwhile amount of correction for your base map, also don't forget in my case it's targeting an AFR of 13.2:1 so best air to fuel ratio for the motor but that never makes best power! If your dyno opp was keen he could set the target AFRs for each throttle position and rpm range then you'd have an AFR table much like the fuel table for AT to follow then you could configure AFRs for best power! Tbh the possibilities are endless! What you got in mind for it?
I was thinking maybe spend the money on an AT rather than a custom map as I could then swap the AT from bike to bike when I change instead of repeatedly having to pay for custom maps.
Ah ok, tbh IMO I think you still need a custom map BUT saying that I've never tried to map a bike without the base map, as most blades tend to be very close to the dynojet maps I'd say you could prob get it within a few runs, all you would have to take into account is plug in time for checking and accepting values etc..if you were in no hurry then I'd say you could have it bang on over a period of time but how long and how many runs I could not say...
My Old 09 had PCV + AT and a full Arata Ti system. Made 168 at the back wheel and improved the throttle response no end. After a bit of fiddling with AFR's at the top end, we ended up around 12.9 as the ideal number for WOT above 8k Thing to remember with the AT is to regularly check the correction tables and accept if they look ok. Watch out for fuelling spikes that sit outside the trend of the correction. So if you see a column going -1,-3.-4,-6,-17-.6.-3 for example, theres ob viously an interpolation glitch. Manually enter a number to smooth out the error and accept. You'll see over time and varied riding conditions the AT will settle down in it's variations.
Must get around to fitting mine . It would be nice to see if it would/could improve my latest set up Had it dyno'd about three weeks ago on one of the few hot dry days this summer has bothered to give us . 173bhp and 82 ft-lbs ... the really good thing its got 80ft-lbs plus from just below 8000 up to 12000 revs That's a good improvement over a stock Blade ... even the latest one
How much time have you got Full Akrapovic titanium system Ex BSB HM Plant bike Straight through carbon air intakes PAIR gubbins removed Alloy bellmouths MWR filter PCV
TBH that's the thing that's putting me off AT. I was thinking it was plug and play, map on the fly but if you keep having to hook it up to a lap top and accept or change correction values as good as I m sure it is its a little too complex for me unfortunately. As I have a simple set up of just an Arrow slip on I m wondering if I might be okay with a standard downloaded map from the dynojet site. All I really want to do is remove the exhaust baffle and make sure the fuelling is not too weak to damage the engine and hopefully smooth it out around 3.5k
