2004 Z1000 PCIII Map

[Mattjin]

I will have to remind everyone to turn on the accel pump function. It doesnt need much, but off the top of my head I used somewhere in the mid 80's for sensitivity and some around 5 to 10 for the enrichment. Next time I am anywhere near the bike with a laptop I will extract the numbers I ended up needing.

On a side note, it is easy to see the OEM ECU doing its accel pump function. It uses a type of asyncronous enrichment. This means it pulls out of sequential firing and instead pulses all injectors together very rapidly inbetween the normal pulses. You can see this when you notice the rpm levels jump to crazy levels when you crack the throttle. It's not a bug, that is what is meant to happen, and typically we use this type of enrichment in the lower rpm levels more so than high rpm. The Accel Pump function I am fairly sure just uses syncronous enrichment which adds extra fuel correction to the normal pulses, so it just runs slightly richer for a number of engine cycles.

[pittster]

So there it is. The no-bullshit, nothing-hidden, straight-facts that disabling the sud throttles give you gains in low end power with no real negatives.

I think that is the first time i have had some no bullshit data aboud secondarys. with before and after plot's

Appreciate that alot, i have always wondered about doing it to mine. My old work lets me come in and do stuff on there dyno (new 250i) was going to remove secondary's do another complete custom map with tuning link and compare. Again could be worthless on mine but you never know till you try. Last thing i want is to lose any in my torque/pwr curve.

Also Mattjin are your valves completly removed or set to the open poition?

Totally agree good tuner with history can do what tuning link can its just time saving really complete maps in 3-4 hours @ $330 (remember from a zero map not a similar map).

Funny thing with once you start dyno tuning all the old wife tales of xx works with yy if you do zz are all blown out of the water. like 2-2 & 2-1 pipes on a V work fine but if there is no balancing pipeon a 2-2 then the torque profile totally changes but pick up peak HP, or how most HD will pick up 10-15hp across the graph with a filter but a jappa sometimes losses.

Again nothing beats factual data with before and afters. So good luck oldman once you get it sorted enjoy it really is night and day when you have a bike running at spot on AFR's

[pittster]

I will have to remind everyone to turn on the accel pump function. It doesnt need much, but off the top of my head I used somewhere in the mid 80's for sensitivity and some around 5 to 10 for the enrichment. Next time I am anywhere near the bike with a laptop I will extract the numbers I ended up needing.

On a side note, it is easy to see the OEM ECU doing its accel pump function. It uses a type of asyncronous enrichment. This means it pulls out of sequential firing and instead pulses all injectors together very rapidly inbetween the normal pulses. You can see this when you notice the rpm levels jump to crazy levels when you crack the throttle. It's not a bug, that is what is meant to happen, and typically we use this type of enrichment in the lower rpm levels more so than high rpm. The Accel Pump function I am fairly sure just uses syncronous enrichment which adds extra fuel correction to the normal pulses, so it just runs slightly richer for a number of engine cycles.

Yeah i ran i little bit of Accel pump for a while but now i have turned it off may play with it some more again but i don't know i have secondary injectors and i don't know it felt odd on mine, but my mates gsxr-750 it really made a difference.

Those z1000 put down a nice curve and good torque plenty for a naked love it

[Mattjin]

I just did the unplug mod. I really dont see there being any gains whatsoever in removing the plates, or even going to larger throttle bodies. Maybe with better cams, compression, and a much higher rpm limit there might be gains with larger throttles but they would be extremely small. During testing I did full throttle dyno runs at 80 and 90% throttle and there was zero difference at 90, and lost 1hp at 80% throttle. This shows the inlet is not a restriction with these particular engines at this level.

Mapping from scratch is what I do all day. Most jobs are done with just MAP sensing, whereas the bikes are done with a combination of TPS/MAP blending. Usually TPS as the primary, with MAP used as a correction over the top. Actually this morning's first job was a Mazda 13B PP mapped purely off TPS due to there being virtually no clean MAP signal to work with. With these jobs I have to start with an absolutely zero map, as in, the engine does not run at all yet, and has to be mapped for ignition timing as well. Far more complicated than a simple PC3, which trims the injector output signals of an already running ECU.

The accel pump is needed after the STD because you are now adding alot more air more suddenly at lower rpm. At around 3000rpm you will most likely make the same power at 40% throttle as you will at 100% throttle. Just beforehand the subthrottles feed the throttle in slowly. Why on earth they dont give full throttle at low rpm is beyond me! So.... at low rpm just opening to half throttle quickly is more air flow than the OEM ECU is programmed for. It runs OK without the Accel Pump feature, but it does dip very slightly leaner. eg. if you are sitting on around 13.0:1 and you crack the throttle it dips to around 13.5:1, so adding a few percent keeps it closer to the required AFR. On the bike it feels very slightly more responsive.

No need for the thanks. I just get tired of the BS that floats around, and I have the facilities, knowledge, and the desire to set the record straight. I was ready to sell my Zed to get a bike with stronger bottom end power, now I am keeping it.

[Mattjin]

Double Post

[oldman]

I plugged in the values from your map and it is worse than before so i'm re-enabling the secondarys for now. The riding season is quickly coming to a close and I'll screw with this during the snowy months. For now I'm going to enjoy the last good days of the season. I miss carbs. Jim Time.

[Mattjin]

Accel settings were:

Sensitivity halfway between 80% and More
16 cycles
+8% fuel

The US spec ECU runs much leaner than the aussie model, which is very similar to the Euro model from what I can gather. Ours runs rich pretty much everywhere.

[oldman]

I don't know why i'm even fucking with this as i never ride below 4,000 RPM anyway. When drag racing I launch at 6500 RPM and 58 MPH is 4000 RPM in 6th. Anyway I've ordered a wideband fuel air MF. Expensive little fuckers, (490.00 U.S.), so I'm going to get this sorted anyway. GD computerized BS anyway. Cheers.

[born green]

Sounds way to much drama, i have a very good tuner, dyno man, i just drop my bike off, pick up, all remaped!!! all so easy!!

[z1000-bike]

Just getting into the fun of tuning. I don't know much about tuning, so just trying the trial and error approach.
I would like to learn to tune my car one day, so experimenting on my bike for now.

I did the STD mod the other week, and just increased the fuel for low revs on the Power Commander 3, best mod ever!
Then loaded Ivan's Map (http://z1000.riderdestination.com/thumb ... hp?album=7) and it felt a little smoother, but not as much acceleration.
Now I just tried Mattjin's map, compared them and I was worried that there was a lot of negative values. But OMG! It feels so good.
It smelt a little rich every now and then, but that's because I don't have the K&N filter yet.

What is the easiest way to data log, does the Power Commander do this, or do I need to connect something else to it?

[Mattjin]

The best thing you will ever do is to go buy yourself a wideband AFR kit. There are a couple of really small kits these days. Just have someone weld an O2 sensor bung onto your exhaust somewhere out of the way (18x1.5mm thread) and you are on your way to learning. I have been a professional tuner for over 20 years and my best advice is to master the PC3 before you move onto cars. The PC3 is just a simple piggyback ECU that intercepts the injector output signal and modifies them according to the values you enter in the table. There is very little to get wrong, so it is a good place to start.

With my particular setup, it is not rich anywhere. It should have around 12.6:1 under load and rpm, and around 14.4:1 cruising and up to around 20% throttle. Below 4000rpm the motor makes around 95% of its power by 30% throttle anyway, so above this it needs to be around the high 12:1's. But you need to have my exact setup for it to work. The map is only a guide to show the changes you need to make when doing the STD. If you plan on learning to tune you also need to learn to NEVER blindly use anyone elses map. You look at them and see what they did, then assess what your own setup is doing wrong and adjust from there.

[z1000-bike]

With my particular setup, it is not rich anywhere.

Your right, I went from an average of 160k's a tank, now just filled up at 205k's to the tank.
It runs fine, and nice and smooth compared to standard, I will just keep fiddling with it to see what happens