Most important guages for boosted engines?

[cali yaris]

battleversion -- great links!

Just because it's 0-5v does not mean it's a wideband sensor like the kind that come with gauges. The Yaris sensor is a proprietary, unusual hybrid design. To demonstrate this, you cannot replace it with a 0-5v wideband A/F sensor and have it work. (see bold print below)

The rear sensor is an "normal" O2 sensor.

A WRAF sensor is essentially a smarter oxygen sensor with some additional internal circuitry that allows it to precisely determine the exact air/fuel ratio of the engine. Like an ordinary oxygen sensor, it reacts to changing oxygen levels in the exhaust. But unlike an ordinary oxygen sensor, the output signal from a WRAF sensor does not change abruptly when the air/fuel mixture goes rich or lean.

[largeorangefont]

Originally Posted by cali yaris

battleversion -- great links!

Just because it's 0-5v does not mean it's a wideband sensor like the kind that come with gauges. The Yaris sensor is a proprietary, unusual hybrid design. To demonstrate this, you cannot replace it with a 0-5v wideband A/F sensor and have it work. (see bold print below)

The rear sensor is an "normal" O2 sensor.

That is describing a wideband sensor.

[365Motorwerks]

Originally Posted by LtNoogie

Can I get a single combo Boost/Vacuum gauge or does it have to be boost only?

Does this mean that the intake manifold pressure will show max vacuum at idle and then swing to low vacuum at WOT (S/C not engaged) to boosted psi if the S/C is spinning?

It's been a while since I thought about how an engine functions.

That's the kind I run, heck I even use the vacuum function the more vacuum you see the better your mileage!

This is the same one but I swapped the face and ring to black..

[cali yaris]

That is describing a wideband sensor.

right... and then there was the rest of my post (which you quoted). Try plugging in a nice Bosch universal wideband sensor in that first bung and running it to your ECU.


I'm simply saying it's not the same.

[largeorangefont]

Originally Posted by cali yaris

right... and then there was the rest of my post (which you quoted). Try plugging in a nice Bosch universal wideband sensor in that first bung and running it to your ECU.


I'm simply saying it's not the same.

I didn't say is was a Bosch wideband sensor. There are no "universal" wideband sensors. Then ones you are thinking of that are most commonly used are actually VW parts.

Hondas used NTK wideband sensors, and then whatever the Yaris has in it. Coud be NTK or Denso.

[thebarber]

boost, a/f, egt

[battleversiontc]

why everbody gets the added hole for the wideband is so it plugs into the gauge and uses it as a seperate monitoring system while the factory ecu reads off the factory installed unit to apply fuel/air more properly and by the way bosch makes a wideband sensor for a replacement for the yaris

[battleversiontc]

Originally Posted by cali yaris

right... and then there was the rest of my post (which you quoted). Try plugging in a nice Bosch universal wideband sensor in that first bung and running it to your ECU.


I'm simply saying it's not the same.

i have tried this with my plx device and it works great i havent gotten any cels yet

[at3GG]

beginner question.....besides "boost" lol what does a boost guage pull its reading from? Some line i would assume but which?

[whooppee777]

it reads the pressure levels from a vacuum line off of the intake manifold.

[at3GG]

is that line there stock or added when a boost guage is added?

[LtNoogie]

I'll let you know in a week or so. I just purchased an Autometer vacuum/boost gauge from Garm. I have to see what parts came with the Blitz kit to connect to the new intake manifold. Right now, the hole is pugged with an Allen screw.

[LtNoogie]

Ok, it's taken over four months since I asked the original question. Here's a video of my vacuum/boost gauge and wideband a/f gauge. Sorry for the shaky picture but my camera mount shakes and I had to zoom to get the gauges to fill the screen. The oil pressure gauge has not been connected to the sender unit yet.

I'll be cross-posting the same video in another thread so you don't want to watch it twice.

http://www.youtube.com/watch?v=05RZSyraA5Y

[largeorangefont]

That thing is lean under boost. You need a tune.

[LtNoogie]

The provided Blitz fuel controller is a black box and not adjustable. Would my only options be larger injectors? Wouldn't that make me run too rich under NA operation?

[PETERPOOP]

I thought you were going to get TC injectors?

[largeorangefont]

Originally Posted by LtNoogie

The provided Blitz fuel controller is a black box and not adjustable. Would my only options be larger injectors? Wouldn't that make me run too rich under NA operation?

No, don't do that. Getting bigger injectors will probably just make the car slower. See my response in your lean condition thread.

My theory is that the black box retards the timing making the OVERALL tune safe. You would need to datalog to see for sure, or monitor EGT.

If you are going to spend money, spend it on some way to tune the car. I think you could easily pick up 15-20 HP from more agressive timing, and richer AFR under boost.

Again, you don't need bigger injectors.

[largeorangefont]

Word on the street, and what really works are usually 2 different things.

If he can find a piggyback, I will tune it for him.