ECU

[Chris15]

Hi,

I am seriously considering upgrading to a tune able ECU. I have never played around with this aspect of a vehicle before but will learn quickly if it is the right mod for me. Basically looking for more power and faster lap times.

What are the pro's and con's?

How much should I be budgeting for?

I really want to know what is the most popular for a NA6.

I have only a lightly modified 1600cc.

ARC induction.

RX7 AFM.

Extractors...

Hope this sparks some opinions and heaps of info.

[bartmanftw]

Programmable ECUs don't really have any cons if they're set up right. You'll get better response, better fuel economy, more power ect. On a na6 you'll get a nice power gain by removing the AFM and using a MAP sensor isntead. If you're wanting to DIY, then look into the Megasquirt ECU range. If you can solder one together you can save quite a bit of money. You'll need to factor in the cost of a wide-band O2 sensor as well as the initial ECU purchase.

[Chris15]

I like the sounds of making it up from scratch.

I am a novice when it comes to injection though. Can you briefly explain what a MAP does, does it entirely replace the AFM as an alternative to delivering the air and fuel?

is there an ECU kit that can be bought?

[bartmanftw]

Instead of measuring the airflow through the airflow meter the ECU calculates the required fuel using a manifold absolute pressure (MAP) sensor and a temperature sensor to determine fueling. So basically it reads the intake pressure and uses that to determine how much fuel to inject among other things.

This is a DIYPNP megasquirt kit that you assemble yourself which will work for you. It runs on a microsquirt module and uses MS2/extra firmware.
http://www.diyautotune.com/catalog/diyp ... p-384.html

[speed]

Everything Bart said.
MS2 will suit perfectly.

My advice is to also budget for a wide band so that you can take advantage of the autotune features ;)

[bartmanftw]

Wideband is 110% necessary for tuning. Don't even consider trying without one.

[sailaholic]

The biggest disadvantage with a tuneable ECU is you'll be constantly dicking around with it sorting some little issue.


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[ndragun]

The biggest disadvantage with a tuneable ECU is you'll be constantly dicking around with it sorting some little issue.


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QFT