Unichip and Electornic SC?

[Shiv@Openflash]

Originally Posted by FrsDuke

My bad didn't know esc map could come preloaded.

Yes indeed. Only by request though

[Squido3J]

Originally Posted by shiv@vishnu

Yes indeed. Only by request though

I'll ask nicely :]

Sent from my SCH-I535 using Tapatalk

[neutron256]

Originally Posted by shiv@vishnu

You will need to raise airflow and MAP sensor limits to avoid CELs with a supercharger. How is that done with the Unichip?

Edit: I'm not trying to detract from your choice. I'm just legitimately interested in how you do this. And of course I wish you the best possible results!

There are a few ways that I've come up with to do this:

1. In a system where the ESC is operating in all on or all off manner a map can be created in the uni hip that will only allow it to activate above a certain RPM. This will keep the boost below the upper limit of the Stock MAF sensor.

2. Using the unichip to control the speed of the ESC a map can be created that will keep the speed (and therefore boost) lower at low RPMs and then raise it as RPMs increase. Again this will allow you to keep boost below the upper limit of the Stock MAF sensor.

3. Run the stock MAF sensor through the Unichip, and set it up to clamp the voltage at the upper limit so the ECU doesn't detect a fault. This is more risky because you're basically removing one of the ways the engine would normally detect a fault.

My goal is to use method number two in my design, but if it proves to tricky Ill use the first and probably simplest method.

[FrsDuke]

So if I understand what you said... It'll work but only to a certain airflow limit. Meaning only to a lesser power level than oft or ecutek would allow?

[neutron256]

Originally Posted by FrsDuke

So if I understand what you said... It'll work but only to a certain airflow limit. Meaning only to a lesser power level than oft or ecutek would allow?

First ill say I'm not a professional tuner so anyone feel free to correct me if I say anything that's not accurate.

It's not the MAF (airflow) sensor that is the issue causing CELs. It's the MAP (manifold absolute pressure) sensor. This mean the amount of boost is the issue not how much air is flowing.

With the ESC operating at full power boost will decrease as engine RPMs increase. My plan is to limit the amount of boost ESC provides until reaching a given RPM where as it will turn on fully.

There are other methods for dealing with without limiting boost. Clamping the output voltage of the MAP sensor (example 3 above). Or installing a MAP sensor that can operate at higher pressures (2 or 3 Bar) and then using your tuning system (software or Unichip) to adjust to the different MAP output voltages.

So there are really three different approaches all of which can be achieved by Unichip:

1. Limit boost
2. Trick the ECU so it doesn't see a fault at higher boost pressures
3. Upgrade the MAP sensor and adjust the tuning maps to compensate for the difference.

[FrsDuke]

It sounds to me like it is either limit power or trick the ecu. Sounds dangerous, but I have no clue . Best of luck and I'm keen to see the results

Edit: it doesn't sound easy, safe, or capable of full power delivery. The OFT is all three.

[Squido3J]

Originally Posted by FrsDuke

It sounds to me like it is either limit power or trick the ecu. Sounds dangerous, but I have no clue . Best of luck and I'm keen to see the results

Edit: it doesn't sound easy, safe, or capable of full power delivery. The OFT is all three.

Im going to be honest. I have no freaking idea what all those acronyms mean and what you guys are talking about. Lol im such a newbie

[FrsDuke]

Engine control unit
Open flash tablet.
I'm actually going to stop bumping this thread because it is still in the wrong section of the forum.

[neutron256]

Originally Posted by FrsDuke

It sounds to me like it is either limit power or trick the ecu. Sounds dangerous, but I have no clue . Best of luck and I'm keen to see the results

Edit: it doesn't sound easy, safe, or capable of full power delivery. The OFT is all three.

You really have three options, and they are the same with Unichip, or an ECU tuning method like the OpenFlash Tablet.

1. Limit the power of the electric supercharger. This is safe but doesn't give maximum power. It only needs to be limited at below about 3000 RPM, above that the boost pressure will fall as RPMs rise and it will be within the operating range of the the stock MAP sensor.

2. Trick the ECU. This can be done by clamping the output voltage of the stock MAP sensor, or if using an ECU tuning method I think there is a way to get it to ignore a fault condition (don't quote me I don't know anything about ECU tuning for this car)

3. Replace the stock MAP sensor. This is the best option but will require the most tuning because it will mean you need to adjust all the maps to account for the different range of the new sensor.

There are no perfect solutions for this. I personally think that limiting the power at lower RPM's is the most sensible solution. If you were really looking to get every single horsepower out of this engine you'd probably be looking at something other then an electric supercharger. It's like forced induction light. It gives you a small temporary boost, with little to know footprint once removed.