How do I cure a lean condition? - Page 5 - Toyota Yaris Forums

largeorangefont · 03-16-2009, 07:41 PM

Quote:

Originally Posted by whooppee777

so if we got the cam com we could adjust the cams to cope with the crazy a/f readings?

No, the cam has nothing to do with it.

kurokoma-kun · 03-16-2009, 08:59 PM

Quote:

Originally Posted by largeorangefont

You can control EGT by adding more coolant (fuel) or turning down the intensity of the flame (ignition retard).

Crap, I have got to get off my a$$ and install my gauges! Without knowing the AFR, seems like knowing the ignition timing means nothing

Currently I just gave a tach and scangauage on volt, ign, tps, and cycle through others (load, loop, temps). I have boost/vac and wideband a/f and oil press. still in their boxes

Cruising around at 2500-3500 rpm, the tps is ~25, load is say 50, ign timing is usually ~30. Under boost (load 99 and tps 25+) it quickly drops to half that... is that normal?

LtNoogie · 03-16-2009, 09:38 PM

Quote:

Originally Posted by kurokoma-kun

Crap, I have got to get off my a$$ and install my gauges! Without knowing the AFR, seems like knowing the ignition timing means nothing

Currently I just gave a tach and scangauage on volt, ign, tps, and cycle through others (load, loop, temps). I have boost/vac and wideband a/f and oil press. still in their boxes

I cannot fault you for being slow. I started the thread about gauges for boosted applications at the end of October. It's now mid-March and I just got two of my three gauges working (boost/vac & wideband a/f). Oil pressure should be done next weekend...maybe.

As for the scangauge, I normally set it to trip MPG, instant MPG, RPM, & fWt

largeorangefont · 03-16-2009, 10:09 PM

Quote:

Originally Posted by kurokoma-kun

Crap, I have got to get off my a$$ and install my gauges! Without knowing the AFR, seems like knowing the ignition timing means nothing

Currently I just gave a tach and scangauage on volt, ign, tps, and cycle through others (load, loop, temps). I have boost/vac and wideband a/f and oil press. still in their boxes

Cruising around at 2500-3500 rpm, the tps is ~25, load is say 50, ign timing is usually ~30. Under boost (load 99 and tps 25+) it quickly drops to half that... is that normal?

Yes that sounds correct.

kurokoma-kun · 03-16-2009, 10:48 PM

Quote:

Originally Posted by LtNoogie

I cannot fault you for being slow.

thanks... this whole project has taken me forever though. I'm a terribly slow weekend mechanic and even slower electrician, plus it's taken me a long time to get a mental grip on the basics of boost--had a lot to learn and still do, but experience is the best teacher I guess

Quote:

Originally Posted by largeorangefont

Yes that sounds correct.

thank you for the reassurance

kurokoma-kun · 03-16-2009, 11:22 PM

Quote:

Originally Posted by camelll

These are pretty much the numbers I see as well jo.

Interesting! now I'm very curious to know what Long and others are getting, and how to interpret it all.

LtNoogie · 03-16-2009, 11:41 PM

I was seeing ign timing dropping to single digits under boost this evening.

rpalai · 03-17-2009, 03:20 AM

I have to agree with the comments posted by most of the members. Slightly larger injectors, or is there any way of possibly increasing fuel pressure to the injectors under boost to a higher level than the controller is allowing? Perhaps an Apexi-II unit or something similar that can work alongside the Blitz fuel controller? This lean condition is a real concern and has to be fixed! If it is happening in your car, it most likely is happening to everyone who has this system installed, like me! This will probably be an interesting and do-able fix, hopefully. Thanks! RPALAI

cali yaris · 03-17-2009, 03:27 AM

would be pretty easy to throw a set of Scion tC injectors (about a hundred bucks on eBay) and see what happens.

largeorangefont · 03-17-2009, 01:05 PM

Quote:

Originally Posted by LtNoogie

I was seeing ign timing dropping to single digits under boost this evening.

Yea, the car is fine then... Don't loose any sleep over it.

largeorangefont · 03-17-2009, 01:06 PM

Quote:

Originally Posted by cali yaris

would be pretty easy to throw a set of Scion tC injectors (about a hundred bucks on eBay) and see what happens.

That would be the worst thing he could do at this point. If he is seeing single digits for timing under load, he does not want to add more fuel.

largeorangefont · 03-17-2009, 01:10 PM

Quote:

Originally Posted by camelll

I am not seeing a lean condition, my wideband show's between 11 and 12 under wot and stoich at idle. my scangauge readings are on par with korokuma kun's. I was however experiencing pre ignition but that has been stopped with the lucas octane booster and 93 octane in the tank. Noogie however was seeing a lean condition when his car was on the dyno and is showing a condition now but does not have the sensor in the optimal spot.

I am gonna have to mess with the camera and check out its video settings or just break down and by a camcorder.

I could not tell you why the 2 of you are seeing differences. Is your black box hooked up properly? Noogie is stting stoich at idle and during cruise as well, so again, his wideband is close to accurate.

Noogie is seeing low timing, so I am assuming that the black box is offsetting timing under load. What kind of timing values do you see under boost?

kurokoma-kun · 03-17-2009, 03:36 PM

Quote:

Originally Posted by LtNoogie

I was seeing ign timing dropping to single digits under boost this evening.

Quote:

Originally Posted by largeorangefont

Yea, the car is fine then... Don't loose any sleep over it.

Lieutenant, your readings indicate a warp core breach is imminent... you've got to shut down the reactor now, then run a level 3 diagnostic on the matter/antimatter reaction control system

sorry Long, not to make light of your concerns, I've just been wanting to say that to you for some time and now seemed like the right moment

KCALB SIRAY · 03-17-2009, 03:47 PM

Quote:

Originally Posted by LtNoogie

I was seeing ign timing dropping to single digits under boost this evening.

Quote:

Originally Posted by kurokoma-kun

Lieutenant, your readings indicate a warp core breach is imminent... you've got to shut down the reactor now, then run a level 3 diagnostic on the matter/antimatter reaction control system

sorry Long, not to make light of your concerns, I've just been wanting to say that to you for some time and now seemed like the right moment

See Long, and you make fun of me when I speak Klingon

LtNoogie · 03-17-2009, 04:06 PM

I tried to make a video last night while driving and hand holding the camera. Not recommended. I'll install the camera mount tonight and shoot another video.

largeorangefont · 03-17-2009, 06:34 PM

Quote:

Originally Posted by camelll

I will say though that I have a different fuel controller than most, there are only 3 people that have the same fuel controller I do (that I am aware of). I was one of the first people to get this kit.

Well there you go. That probably explains some of the differences. If all of you were getting knock, they probably made some revisions to future kits.

PETERPOOP · 03-17-2009, 09:42 PM

I'd like to chime in with my a/f readings, but I don't got a wideband a/f gauge yet. However, it is true that I have not experienced pre-ignition. But, I did put in lucas oil's octane booster with shell's 92 before i got the kit installed and running. I'm not sure if this is preventing the pre-ignition, but I am not experiencing any. I don't know if I don't use the boost octane if I will experience it or not, but I don't plan on not using the boost octane for a long time.

I'm also not experiencing the noise that occurs when the car is in idle and the a/c is on. I don't know if I have a lucky kit, or a newer kit, or what not, but my kit seems to run flawless as of now. We'll see if the story changes once I see my a/f readings.

LtNoogie · 03-18-2009, 10:32 AM

The video was too shaky to post.

03-16-2009, 11:41 PM	#79
LtNoogie View User's Garage Drives: '08 Bayou Blue LB AT Join Date: Oct 2008 Location: West Hills, CA Posts: 2,517	I was seeing ign timing dropping to single digits under boost this evening. __________________ aFe Intake \| Blitz Supercharger \| Megan Header \| TRD Exhaust \| NST Pulley Set TRD Shocks/Struts \| Tanabe NF210 Springs \| TRD Sway Bar \| Motegi TRAKLITE wheels \| Kuhmo Ecsta XS R1 Concepts slotted rotors \| Carbotech 1521 brake pads \| stainless steel brake lines \| Seibon vented carbon fiber hood

03-17-2009, 03:27 AM	#81
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	would be pretty easy to throw a set of Scion tC injectors (about a hundred bucks on eBay) and see what happens. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

03-17-2009, 04:06 PM	#87
LtNoogie View User's Garage Drives: '08 Bayou Blue LB AT Join Date: Oct 2008 Location: West Hills, CA Posts: 2,517	I tried to make a video last night while driving and hand holding the camera. Not recommended. I'll install the camera mount tonight and shoot another video. __________________ aFe Intake \| Blitz Supercharger \| Megan Header \| TRD Exhaust \| NST Pulley Set TRD Shocks/Struts \| Tanabe NF210 Springs \| TRD Sway Bar \| Motegi TRAKLITE wheels \| Kuhmo Ecsta XS R1 Concepts slotted rotors \| Carbotech 1521 brake pads \| stainless steel brake lines \| Seibon vented carbon fiber hood

03-18-2009, 10:32 AM	#90
LtNoogie View User's Garage Drives: '08 Bayou Blue LB AT Join Date: Oct 2008 Location: West Hills, CA Posts: 2,517	The video was too shaky to post. __________________ aFe Intake \| Blitz Supercharger \| Megan Header \| TRD Exhaust \| NST Pulley Set TRD Shocks/Struts \| Tanabe NF210 Springs \| TRD Sway Bar \| Motegi TRAKLITE wheels \| Kuhmo Ecsta XS R1 Concepts slotted rotors \| Carbotech 1521 brake pads \| stainless steel brake lines \| Seibon vented carbon fiber hood

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03-17-2009, 03:20 AM	#80
rpalai View User's Garage Drives: 2008 NEW Yaris 2-door Liftback Join Date: Nov 2008 Location: Florida, USA Posts: 19	I have to agree with the comments posted by most of the members. Slightly larger injectors, or is there any way of possibly increasing fuel pressure to the injectors under boost to a higher level than the controller is allowing? Perhaps an Apexi-II unit or something similar that can work alongside the Blitz fuel controller? This lean condition is a real concern and has to be fixed! If it is happening in your car, it most likely is happening to everyone who has this system installed, like me! This will probably be an interesting and do-able fix, hopefully. Thanks! RPALAI

03-17-2009, 09:42 PM	#89
PETERPOOP View User's Garage Drives: 08 white liftback Join Date: Oct 2008 Location: Oahu Posts: 3,674	I'd like to chime in with my a/f readings, but I don't got a wideband a/f gauge yet. However, it is true that I have not experienced pre-ignition. But, I did put in lucas oil's octane booster with shell's 92 before i got the kit installed and running. I'm not sure if this is preventing the pre-ignition, but I am not experiencing any. I don't know if I don't use the boost octane if I will experience it or not, but I don't plan on not using the boost octane for a long time. I'm also not experiencing the noise that occurs when the car is in idle and the a/c is on. I don't know if I have a lucky kit, or a newer kit, or what not, but my kit seems to run flawless as of now. We'll see if the story changes once I see my a/f readings.