Roman Posted June 18, 2016 Share Posted June 18, 2016 More VVTI related WTFs. Today I replaced the VVTI pulley with a brand new one. Now it follows orders perfectly and drops to zero degrees as it should. So it wasnt a problem with cam offset, and it wasnt a problem with minimum duty cycle on the solenoid. The problem was some crud stuck inside the old VVTI pulley or something like that. Soooooo this is interesting news as gaining 12 degrees more cam angle retard should help with top end power. If it makes more power, it should run a little leaner... Previously it has been +- 13:1 all the way to redline. Results: wtf! Mega lean now. Either I've just unlocked a shitload more power (skeptical) or this 12 degrees difference has now made injector timing critical at that sort of RPM range. Or maybe a bit of both. Interesting results anyway though, look forward to fixing up the fuel tomorrow and then seeing how it goes by comparison. Would be awesome to have unlocked some more doorts for trackday at that rpm. 2 Quote Link to comment Share on other sites More sharing options...
Celica RA45 Posted June 18, 2016 Share Posted June 18, 2016 dave why use afr why not just use lambda like 94 for down low 92 for 50% throttle and 88 lambda for 100%throttle Quote Link to comment Share on other sites More sharing options...
kpr Posted June 18, 2016 Share Posted June 18, 2016 afr is fine for pump gas, everyone knows the numbers. end of the day its just a calculation from lambda. lambda would be better if you're running different types of fuel Quote Link to comment Share on other sites More sharing options...
Celica RA45 Posted June 19, 2016 Share Posted June 19, 2016 does the link only use afr ,the motec only uses lambda for fuel as it has so many variables of engine combos, plus 2 lambda sensors and room for fuel flex sensor etc Quote Link to comment Share on other sites More sharing options...
kpr Posted June 19, 2016 Share Posted June 19, 2016 can be setup to use either afr or lambda in the link software. external wideband controller has to be configured to send the right signal to link.. the latest link has a built in wideband controller. Quote Link to comment Share on other sites More sharing options...
Roman Posted June 19, 2016 Share Posted June 19, 2016 I prefer AFR to Lambda, just because that's what I'm used to. But yeah if using flex fuel then Lambda is the way to do it. Quote Link to comment Share on other sites More sharing options...
Roman Posted June 19, 2016 Share Posted June 19, 2016 Ran some tests on injector timing this afternoon. So looking for the setting that gives the richest AFR. As that means more of the fuel is actually going into the cylinder and burning properly. Surprsingly/not surprisingly looks like theres a clear trend there. Only thing I dont understand is why it wants LESS advance as RPM increases? I would have thought because RPM increases and there's less time between events, you'd want to start spraying earlier. Anyway... So looks like ~400 deg BTDC combustion (end of injection), then up to 450, then eventually down to 250 for high rpm. Disregarding the 8025rpm one will just set to 250. So looking at this graph from the Link documentation: It looks at though before 5500rpm it finishes spraying its fuel BEFORE the intake valves open. Then after 7000rpm it's mainly spraying fuel while valves are already open. 1 Quote Link to comment Share on other sites More sharing options...
Celica RA45 Posted June 19, 2016 Share Posted June 19, 2016 swings and roundabouts ,why dont you get a tuner that can do the whole lot ,like set up the injection right, set the vvti right, tune it right and then set up the 2 stage right, and be done with .i understand that you like to learn what you are doing etc but gee Quote Link to comment Share on other sites More sharing options...
Yowzer Posted June 19, 2016 Share Posted June 19, 2016 Don't learn shit when you pay others to do it. 5 Quote Link to comment Share on other sites More sharing options...
Popular Post Roman Posted June 19, 2016 Popular Post Share Posted June 19, 2016 My car's wiring is a good analogy here. I have always hated doing wiring, so I outsourced a lot of the wiring to get relays, fuses, etc etc all setup to convert the car from carb to EFI many years ago. (Thanks Dad) The problem is, for a long time I didnt have a bloody clue what any of it did, or even where some of it was. It always terrified me that I'd get to a trackday, or be on a road trip a long way from home and have some issues with the wiring. And then not have the first clue on how to resolve the issue. Since then, even though I hated every minute of it, I persisted and learned more about it and now I understand where it all goes and what it all does. Unfortunately a lot of people are in this exact same situation with their EFI / tune. They ship their car away, and get back a little box full of smoke and mirrors that makes their car go. Then when their car doesnt go anymore, or they get to Taupo where the elevation affects their tune and it runs like shit.They cant do anything but shrug their shoulders. There's no need for anyone here to be one of these people, when the only barrier to understanding something is spending the time to learn about it. 11 Quote Link to comment Share on other sites More sharing options...
Roman Posted June 26, 2016 Share Posted June 26, 2016 Repost/spam from the photography thread, but thought this was interesting / slightly relevant to thread. Macro photo I took of the end of a 6 hole Toyota Altezza injector. 3 Quote Link to comment Share on other sites More sharing options...
Yowzer Posted June 26, 2016 Share Posted June 26, 2016 That's some pretty pro welding 1 Quote Link to comment Share on other sites More sharing options...
Roman Posted June 26, 2016 Share Posted June 26, 2016 Someones got a steady hand alright! Quote Link to comment Share on other sites More sharing options...
kyteler Posted June 26, 2016 Share Posted June 26, 2016 Someones got a steady hand alright! 6 Quote Link to comment Share on other sites More sharing options...
yoeddynz Posted June 26, 2016 Author Share Posted June 26, 2016 1 Quote Link to comment Share on other sites More sharing options...
Roman Posted June 30, 2016 Share Posted June 30, 2016 Selling an Innovate LC2 if anyone needs/wants one. As mentioned in thread, I swapped to another wideband controller but still blew up sensors...The actual fault was turning on the wideband before the engine has started, not the sensor or controller.So this is now surplus.$100 comes with the upgrade kit to 4.9 sensor and firmware updated. (No sensor though unless you want one of the ones I blew up...) //oldschool.co.nz/index.php?/topic/53342-fs-innovate-lc2-wideband-controller-for-bosch-49-100/#entry1724130 Quote Link to comment Share on other sites More sharing options...
SiRge Posted July 4, 2016 Share Posted July 4, 2016 I need your wisdoms, does anyone think this is good/worth it? http://www.ecotrons.com/products/400cc_to_800cc_engine_fuel_injection_kit/ Quote Link to comment Share on other sites More sharing options...
Snoozin Posted July 4, 2016 Share Posted July 4, 2016 Don't learn shit when you pay others to do it. I always learn that I am mega shit at doing cars, when I try to DIY things. I also learn that when I pay people to do things, it generally works and it's a lot less taxing on my time. 1 Quote Link to comment Share on other sites More sharing options...
Transom Posted July 4, 2016 Share Posted July 4, 2016 I need your wisdoms, does anyone think this is good/worth it? http://www.ecotrons.com/products/400cc_to_800cc_engine_fuel_injection_kit/ Microsquirt looks better and cheaper for a bike application if you can source your own throttle body and injector setup Been looking at getting rid of the evil BMW motronic ecu on my 650 single and microsquirt looks easy as Quote Link to comment Share on other sites More sharing options...
Yowzer Posted July 4, 2016 Share Posted July 4, 2016 I always learn that I am mega shit at doing cars, when I try to DIY things. I also learn that when I pay people to do things, it generally works and it's a lot less taxing on my time. I will admit a lot of my DIY is out of necessity as opposed to desire, however as cars are my job I can't outsource purely out of principal. Unless of course it's something properly out of my depth that I CBF dealing with the learning curve (panelwork etc) Quote Link to comment Share on other sites More sharing options...
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