kaldek

It could be because I'm running 98 RON octane. It's what you would call 95 I believe, and at least here in Australia it is a denser fuel which results in a richer mixture per injector pulse/charge. Putting in the 98 was probably a dumb idea for the stock target AFRs. Only time and experience will confirm that though.

I've done some Internet-digging and found some forums frequented by tuners. They're saying that they see negative double digit trim values all the time, especially with the AFR values in the range of 13.7-13.8 which is where mine is leaning the heck out of itself. Add the fact that I've got a zero map in, and the -20 values make a lot of sense. The general advice from the tuners seems to be this: Get your base map sorted Get a performance AFR table put into the PCV Do a few runs to get the best on-road readings and roll the trims into the base map Fit a switch to the PCV to enable/disable autotune manually Put your economy AFR table into the PCV Go riding, and use your switch to flick between your base map and the trim tables as and when you want economy Never roll the trims into the base map when using the economy AFR table

It's just wierd that I had the exact same problem as you and rectified it with another firmware upgrade attempt. I'm not sure why yours is still stuck in this situation, and I think it's time to call Dynojet. Tell them that you had firmware 1.2.0 and upgraded to 1.4.0 to get the temperature readings to work, but now nothing works.

Well, the bike also felt like a bag of crap at those rpms too. Like it just had the *wrong* mixture. By changing so much on my bike at once I think I have opened a can of worms. See, I cleaned and re-oiled my K&N air filter on the weekend too. Maybe I over-oiled it and the bike is running rich. Or maybe not? I've basically changed too many variables at once and probably need to sit back and have a think about it all. But I'm an impatient bastard, which doesn't help. UPDATE: OK, checked the air filter. Definitely not over-oiled, if anything could do with a touch up in a couple of spots if I was being pedantic. Also checked my spark plugs, just for laughs, and they have a nice healthy colour to them with good electrodes (they are about 40,000km old) Also I checked a PCIII map for a 2002 VFR (with O2 eliminators) and it was richened up in the cruise area (4-5,000 rpm, <=20% throttle), not leaned out. So I'm not sure if you're right about it being rich by default there.

Hey folks, I've been tinkering with the Autotune again. I have zero map, along with the target AFR tables taken from the Dynojet map for the 2009 VFR with staintunes. I did one ride to work. Check out the trim table for fifth gear as it tries to hit an AFR of 13.7:1. Autotune fifth gear trims on zero map after 1 session Check out around 4,000rpm and 10-15% throttle - the Autotune is making big adjustments towards a leaner mixture. This is with 98 octane (high density and therefore richer) fuel and with my cleaned injectors. I must be running somewhere around 12:1 at stock! Either that or the zero map isn't really zero and it's doing stuff I'm not expecting.

Nah mate, there wouldn't be a lot of difference. These things are minute changes, not big ones. Since you already have the PCIII, you already have a tunable fuel pressure regulator - it's the PCIII itself! All it does is richen or lean out the mixture, which is all that a modified pressure regulator does (and the regulator can't be tuned for different revs and throttle positions). Basically you've got yours as nice as she can get, unless you don't have a custom tune yet.

Well folks, it seems that GPM's map is way off the mark for me after all. The longer I rode it, the worse my bike felt - particularly at cruise. Looking at the trim tables, there were "-20" entries all over the place. Trying to get to the target AFR values just kept hitting the maximum trim value and sitting there. I'm guessing this is when the bike started to feel like crud. My clean injectors keep biting me, it seems! I've zeroed out the map again and I am now going to try and trim a zero map. Just watch - I'll probably throw in the towel tomorrow and just zero the whole thing out until I get my headers fitted and a custom tune done!

Nah, I do remember the list though, and I also remember some other V4 yahoo forum. Did it combine with VFRD in the end?

Why me Bastige? :laughing6-hehe: On another note - I just bumped past 1,000 posts! Pretty tame for a guy who has been a member since 2002!

FYI, this is not required on 6th-generation VFR's. However, you need to bend the horn up out of the way to get an 8mm socket in there. Also, I could not remove the reed valve screws on mine. They do not use a bolt and nut method of retaining the reed valve, but rather a phillips head screw which basically refuses to back out, even with the use of an impact screwdriver; the metal is so soft the head of the screw just strips. The solution for me was to get out my angle grinder and grind down the screw thread and reed valve plate until it was so thin that I could just prise it off with a pair of pliers. I had to do this for all reed valves! You need to be careful not to grind the rubber gasket too much though... :warranty:

Good lord, I haven't gotten to the *sensible* phase yet! Legally, I can get an engineer's certificate (it's quite common). Insurance-wise I'd have to go through Shannons insurance, and probably ask for a dollar amount to be insured. They might balk when I tell them it's a daily rider though. Hmmmm. Truth be told I was thinking of going to 3rd-party cover anyway, as basically any crash and she'll be a write off.

Well, I managed to fix my problems with the PCV not showing fuel changes. My Autotune arrived on Monday, so last night I fitted it and threw all caution to the wing by loading up GPM's map - warts (trim) and all, and just rode the damn thing. First up, it ran pretty well. But bugger me - you can feel the Autotune doing its thing for sure! I should post my trims and stuff to see how different my trimmed map is to GPM's, given the mileage differences and my cleaned injectors. I'm stoked though. STOKED.

Don't fret too much mate - I've just discovered my PCV is showing everythig *except* fuel adjustments. It shows RPM, throttle, gear, engine temp, AFR, and duty cycle. But no matter the map, it's showing fuel adjust as zero. Freakin' bizarre. I had trouble upgrading to version 1.4.0 too, and had to do it a few times. Fark, maybe I need to do it *again*. Anyone know if you can downgrade firmware to 1.3.0? And if anyone has a copy?

Yes, I think the Powercommander is still worthwhile. There may be spots in the fuel map where we actually want to *lean* the mixture out rather than richen it. Remember, Honda built their map for power, economy, and the environment and had to take a guess on making the map work for motors in various altitudes. A powercommander lets you tune the mixture just for power, just for economy, or heck, just for the environment if you want. And it will be correct for YOUR motor and exhaust, and air filter, and fuel you run. Add an Autotune into the mix with a custom map, and it gets even more accurate over time.

One big one! Toro was saying that they clog up less than the new ones.

I've only blocked them off at the moment - I have a set of PAIR valve blockoff plates coming soon.