Another S/C'd member worried about his AFR

[LtNoogie]

Originally Posted by kurokoma-kun

Well now you bastards have got me obsessing too! (not difficult)

I don't know what to think of that! I guess the fuel controller is altering the VPA signal sent to the TPS, and thereby manipulating the VTA1 signal then sent to the ECM?

KK, you are overthinking. Don't do it! Last night, I dreamt of fuel pumps, pressure regulators, a set of injectors. It drove me crazy.

I am getting better at calculating the right sized pump and injectors. The biggest problem is that many of the calculations start with your desired HP output. So... I put in 400 HP. Now I have to put in a more realistic number.

So... what do you think is a realistic crank HP that a tuned Blitz kit should be able to put out?


BTW, I've been looking at this OBD II software package.

http://www.auterraweb.com/dynoscan.html

I'll also check out the ones that were posted recently.

[kurokoma-kun]

I think its called PBSD (post boost stress disorder). I barely remember last December, when all my friends were enjoying holiday festivities while I wandered around in a daze, smelling of gas and babbling incoherently about induction system leaks

Hell if I know the max hp at the crank! why not enter a value like 150 or 175 and see what you get. Have you thought of trying to talk to someone at RC Injection btw? They are right there in Torrance, maybe you can get some inside info.

[LtNoogie]

Yes. I'll give them a call. Did I say part of my dream included a fuel line popping off and spraying 91 Octane inside the car while I am full boost? I think I'll order the OBD logger by Wednesday once I research the different ones.

[Doc Zaius]

Originally Posted by LtNoogie

Yes. I'll give them a call. Did I say part of my dream included a fuel line popping off and spraying 91 Octane inside the car while I am full boost? I think I'll order the OBD logger by Wednesday once I research the different ones.

Weirdo!

[kurokoma-kun]

Originally Posted by camelll

so I now keep all the tools and extinguisher in the trunk.

bbwwwwaahahhahhahaa I also keep the magical tool kit and extinguisher in my car! as well as other ritual objects like the domo-kun shrine I made

does anyone know if those flat hydraulic jacks are worth the money? they look like they should fit under lowered cars?

[LtNoogie]

Q: When do I need to upgrade the injectors for my car?

A: The factory fuel injection system operates slightly rich from the factory. Because of this, certain engine upgrades such as low restriction air intake/exhaust systems and/or slight increases in boost pressure can usually be taken care of by the factory fuel injection system.

When airflow increases are substantial and the factory injectors are unable to keep up, larger injectors and/or fuel pressure increases are required. The factory fuel injection system can usually accommodate an injector that flows about 15-20% more than stock without compromising the idle quality or the low RPM drivability. If the air flow increase/horsepower target requires an injector that exceeds a 20% increase over stock, there are several options.

1. Re-program the factory ECU specifically for the new larger sized injectors.
2. Add a piggyback fuel computer that will allow you to control the larger injectors.
3. Use a stand alone engine management system to control the larger injectors.

[LtNoogie]

Interesting. Where did it go to on the fuel controller connector?

Here's the wiring diagram that I just pulled off their website. It looks like my V1.3 wiring diagram.

[ae92trueno7]

hey guys... i just got my aem wideband installed.... im getting readings at wot 11-12
and when off at wot 12.5-13.... thinking of getting some injector off an 09 tc or corrolla... the 2az-fe engine......

[PETERPOOP]

Originally Posted by ae92trueno7

hey guys... i just got my aem wideband installed.... im getting readings at wot 11-12
and when off at wot 12.5-13.... thinking of getting some injector off an 09 tc or corrolla... the 2az-fe engine......

Even if you did run bigger injectors ( i dont know why you would ), you wouldn't want the tc ones. Either matrix or corolla you would want..I think.

Just wait, Noogie is going to be running larger injectors soon and he's going to let us know how it goes.

*My gauges came in today! YEEEE. Don't know when I'll get to install them though...

[PETERPOOP]

im jealous of your WOT readings! ahhh! I should be getting my wideband soon

[cali yaris]

Even if you did run bigger injectors ( i dont know why you would ), you wouldn't want the tc ones. Either matrix or corolla you would want..I think.

why not? they worked fine for me.

[LtNoogie]

Originally Posted by cali yaris

why not? they worked fine for me.

Garm, what size are the tc injectors. What AFR were you reading at idle?

[PETERPOOP]

I think it was mentioned earlier in this thread or another, but it was said that the car would run worst with tc injectors. If anything, only would be good at WOT, but at idle and normal driving, TC would be too much.

If blitz doesn't offer us different fuel controllers with some success, when I get the greddy ultimate, i am going to talk to the tuner and try throw in some tc or matrix/carolla injectors with the 1zz throttle body and tune it accordingly.

[cali yaris]

I think it was mentioned earlier in this thread or another, but it was said that the car would run worst with tc injectors.

"it was said" isn't the same as "it is so".

I'm not sure on the size, noogie -- throw them on and see how your car runs so we can settle this. I was normal AFR at idle, 13-14. Did fine on the dyno too, except at WOT over 5k rpm

[PETERPOOP]

Originally Posted by cali yaris

"it was said" isn't the same as "it is so".

true, this is true.

tC injectors seem like a big jump to go and "try" out. Might be safer going to carolla/matrix injectors , seeing how those run, and if everything is fine, maybe move up to tCs?

Go for it noogie! haha

[whooppee777]

kcalb is going boosted with blitz very very soon and i know he has a set of tc injectors. im sure if he has issues he will swap out injectors and let us know the outcome.

[cali yaris]

if the car runs ok and there is an a/f gauge to watch, trying them out should be ok if done carefully.

I don't know how much larger the tC injectors are but they aren't huge. I am pretty sure that the Greddy turbo kit for the tC comes with 330cc injectors -- so the stock ones must be smaller than that.

[LtNoogie]

I'm test fitting injectors from RC Engineering into the motor on Friday. It's only a fit check to make sure everything bolts down because the injectors are physically bigger than the stock ones. If they fit, I'm working with them to decide whether to install 240cc, 270cc, or 310cc injectors.

That's why I keep asking people what size injectors they are installing and whether they are having any problems at idle or under light throttle.