Turbo Questions

[CASTREX]

Originally Posted by changchewsoon

Just want to share that my setup has an added MAP sensor and the MAF voltage is clamped to prevent the ECU from throwing out a CEL, its working fine for a year now.

Tuning off based on load from the MAP is probably much more accurate then looking at the TPS and the reading from the MAF alone.

That is some interesting information... can you please expalin more about it?

What MAP sensor did you used? Did you sed the one from the emanage or did you added another one?

How was the MAF signal clamped??

IIRC this is one of the problems the guys using the AEM Fic had. They were unable to clamp the MAF signal...

[changchewsoon]

Originally Posted by CASTREX

That is some interesting information... can you please expalin more about it?

What MAP sensor did you used? Did you sed the one from the emanage or did you added another one?

How was the MAF signal clamped??

IIRC this is one of the problems the guys using the AEM Fic had. They were unable to clamp the MAF signal...

I'm currently using the MAP sensor purchased from Trust Japan, JDM Vios does not come with a MAP sensor from the factory.

The MAF signal can be clamped via the E-Manage tuning software, its a standard feature that comes with E-Manage.

With an E-Manage Ultimate, you could even clamp the stock narrowband O2 voltage.

[taKuto]

Originally Posted by changchewsoon

I'm currently using the MAP sensor purchased from Trust Japan, JDM Vios does not come with a MAP sensor from the factory.

The MAF signal can be clamped via the E-Manage tuning software, its a standard feature that comes with E-Manage.

With an E-Manage Ultimate, you could even clamp the stock narrowband O2 voltage.

where does the emanage ultimate clamp O2? I'm looking at all the wires but none of them intercept the O2 signals.

[changchewsoon]

Originally Posted by taKuto

where does the emanage ultimate clamp O2? I'm looking at all the wires but none of them intercept the O2 signals.

You need to look up the wiring diagrams, E-Manage Ultimate has an auto tune feature which you set in a AF ratio and E-Manage will try to adjust itself to dial in the AF ratio set by you.

It works by blocking the stock O2 which is narrow band and sends an adjustable lean signal to the stock ECU to keep it from pulling fuel
in a closed loop operation.

You would need to have a wideband O2 sensor installed to use the E-Manage Autotune feature.

[taKuto]

Originally Posted by changchewsoon

You need to look up the wiring diagrams, E-Manage Ultimate has an auto tune feature which you set in a AF ratio and E-Manage will try to adjust itself to dial in the AF ratio set by you.

It works by blocking the stock O2 which is narrow band and sends an adjustable lean signal to the stock ECU to keep it from pulling fuel
in a closed loop operation.

You would need to have a wideband O2 sensor installed to use the E-Manage Autotune feature.

I'm currently wiring up an emanage ultimate and nowhere in the installation manual does it have any wires related to the O2. I understand the need for the wideband plugged into the serial input, but the O2 is still not handled by the emanage itself.

All i've been reading on the internet is that people are making/buying an o2 clamp. I'd imagine it's just a comparator or something feeding the lean voltage to the o2 once you're in boost, shouldn't be too hard to figure out how to make one.

[changchewsoon]

Originally Posted by taKuto

I'm currently wiring up an emanage ultimate and nowhere in the installation manual does it have any wires related to the O2. I understand the need for the wideband plugged into the serial input, but the O2 is still not handled by the emanage itself.

All i've been reading on the internet is that people are making/buying an o2 clamp. I'd imagine it's just a comparator or something feeding the lean voltage to the o2 once you're in boost, shouldn't be too hard to figure out how to make one.

Dear Takuto,

Apologize for the confusion, a wideband O2 is exactly what I was trying to say regarding the wiring of E-Manage Ultimate which is for the autotune feature. An O2 clamp/simulator is mandatory, I missed out the wideband O2 simulator I'm using.

It works by blocking the stock O2 which is narrow band and sends an adjustable lean signal to the stock ECU to keep it from pulling fuel
in a closed loop operation. <----My LM-2 does the job.

For the narrowband O2, like you said you could either clamp it or use a simulator. Personally, I think using a simulator is better as you could tune narrowband rather then clamping it at a fixed voltage.