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03-25-2009, 12:28 PM | #19 |
What?
Drives: 2007 Yaris LB Join Date: Nov 2008
Location: Safety Harbor, FL
Posts: 1,006
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Yeah, there are definitely other WBO2 solutions besides the LC-1, it's just the one I'm familiar with because I used it with the Megasquirt in my Spitfire.
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03-25-2009, 12:34 PM | #20 |
rice rocket
Drives: 05 Echo Join Date: Feb 2007
Location: Toronto
Posts: 163
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the emanage ultimate won't modify afr signals or o2, pic i found off the web for what parameters it changes
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03-25-2009, 12:41 PM | #21 | |
What?
Drives: 2007 Yaris LB Join Date: Nov 2008
Location: Safety Harbor, FL
Posts: 1,006
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Quote:
The ECU is still going to take the feedback from the O2 sensor and tweak the AFR to stoich. It's what they do. Now, what I don't know is... what does the Yaris do when you go WOT? Because it's an economy car, is it still trying to keep the AFR at stoich? Does it have a WBO2 stock so that it can run lean? If so, does it use that to run richer at WOT? Most cars that I've seen that use NBO2 simply go open loop at WOT, disregarding the O2 signal and running from a map. This is surely what the Yaris is doing now that I think about it, because we can see with the ScanGauge that the car goes Open Loop at WOT. Soooo... if we're talking about making the car run a little richer at part throttle and during cruise, the WBO2 "cheat" should work. But, it's not going to do a thing for full-throttle acceleration. To get more fuel at WOT, you simply need to fit larger injectors and/or increase fuel pressure. What the ECU is doing at WOT is looking at RPM, air temp and air flow and looking up a fuel requirement in a table. That translates to the pulses that are sent to the fuel injectors. The ECU assumes that the stock injectors are present and flowing within spec and that the fuel pressure is within spec. If you fit larger injectors, you'll flow more fuel, but you could run out of fuel pressure if you go too large. If you raise the fuel pressure, you'll also flow more fuel. That, coupled with a timing controller (doesn't somebody make one of those for this car?) should take care of your needs... shouldn't it? PK, think like a large corporation. What possible benefit is there for them to put any of their resources into releasing information about their ECU? Ain't gonna happen. They want performance-minded people to spend their money buying a sportier Toyota, not buying performance parts for a Yaris. |
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03-25-2009, 12:46 PM | #22 | |
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
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Quote:
Well, for a non-turbo/SC'ed car, the horsepower gains from doing this would be pretty minimal, really. In ideal conditions, an engine makes peak power when the mixture is stoichical (14.7:1 Air:Fuel ratio by volume). But, with forced induction, you want to run richer as a safety margin (go read LtNoogie's thread about his lean condition)
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03-25-2009, 12:50 PM | #23 | |||
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
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Quote:
Quote:
Quote:
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The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ... |
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03-25-2009, 12:59 PM | #24 |
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
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PK, I'm sorry but this thread is not really intended to debate the way Toyota handles its intellectual property
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03-25-2009, 01:08 PM | #25 |
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
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Toyota Canada:
1-888-869-6828 Hey, it is worth a try... But I think the idea of getting the local TRD guys to look at a US ECU would be more fruitful.
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The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ... |
03-25-2009, 01:31 PM | #26 |
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
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Aaanyway back on topic, as I noted before, it would be a good starting point to see how the Blitz controller that comes with the supercharger kit, connects to the car's wiring. I got my hand on some wiring information, and as expected, it plugs in to:
MAF sensor input Intake Air Temperature input A/F sensor input Each fuel injector's output So it stands to reason that it functions as a regular piggyback reading the various sensors and overriding the injector signals, and as Loren pointed out, this would probably only have an effect when the ECU's in open loop. Since Long has a supercharger and a wideband installed, I'm gonna ask him to be a guinea pig (in the other thread about the AFR readings)
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The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ... |
03-25-2009, 01:54 PM | #27 |
Bathroom + Laptop = <3
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i actually have a spare ecu in the drawer, but its mine, if anyone has any electrical engineering background and wants to help play with it id be more than willing to drop some cash on some more R&D
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03-25-2009, 02:02 PM | #28 | |
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Not to be a downer or detract from anyone's efforts, but I think the focus of this thread should remain squarely on piggybacks. Hacking the stock ECU is great and all, but a separate working unit that will work in tandem with a stock ECU on stock settings is a much more viable alternative.
I will e-mail Perfect Power right now and get their thoughts on this. I'll post the e-mail as soon as I receive a response. Quote:
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03-25-2009, 02:12 PM | #29 |
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
Location: Bangkok, Thailand
Posts: 7,744
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don't forget to ask what is their solution for getting around the fuel trims!
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The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ... |
03-25-2009, 02:23 PM | #30 |
Who said Yaris was slow?
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I haven't seen "SPLIT SECOND's" name to be called on this thread yet.
These are the go to guys when it comes to tunning for the Large supercharged Toyota Engines. Also URD (under dog Racing ) but I'm not sure if these guys actually use Split Second's stuff for their tuning devices.... Any ways, these 2 companies know their stuff on modern supercharged Toyota engines. Not comparing the the Yaris with a Tacoma here... but still worths a shot. http://www.splitsec.com/ www.urdusa.com |
03-25-2009, 02:30 PM | #31 |
Banned
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Thomas, I'm no tuning guy by any stretch. You know that. What I will do is refer them to a more knowledgeable party stateside so they can have some intelligent discussion, rather than me trying to type everything they say and saying "mm-hmm" a lot.
Would anyone like to volunteer to e-mail me their contact information so I can put them in contact with PP if they respond? charlesluzar@hotmail.com |
03-26-2009, 02:04 AM | #32 |
Drives: Yaris Hatch /Landrover D2 Join Date: Jun 2007
Location: Canada
Posts: 242
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That's some great team work and effort to get this stuff figured out, can't wait for some feedback.
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03-26-2009, 02:35 AM | #33 | |
ekodrvr
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Quote:
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if you want to see my plans for this car, check out here... http://www.cardomain.com/ride/3154316 i like this smiley... |
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03-26-2009, 08:01 AM | #34 | |
Banned
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Quote:
Will continue to update. |
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03-26-2009, 08:23 AM | #35 |
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
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sweet!
the urd afr commander or something like that, that castrex mentioned, looks quite intereting too
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The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ... |
03-26-2009, 08:23 AM | #36 |
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
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sweet!
the urd afr commander or something like that, that castrex mentioned, looks quite intereting too
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The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ... |
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