In a major milestone, and a world first, Phil from GSR has sucessfully run an RX-8 with the factory computer AND a Motec M800 ECU. The factory computer is in control of all normal functions, except fuelling. As a first step, the fuel injectors (all 6) were driven directly by a Motec M800. We have left the RX-8 PCM to drive the ignition without interference. Next step would be to drive the ignition via the Motec.

It had been stated that the M800 would not work on an RX-8 as a piggy back, and only stand alone. Sometime you just need to learn from personal experience. And trust me, Phil would have to be the most experienced in the business.

So what side effects does it have??? Let me put it this way...

• No splicing of wires. We just made a plug and play loom.
• No CEL.
• Aircon works fine.
• ABS works fine.
• T/C & DSC works fine.
• Cruise Control works fine.
• Stereo works fine.

I.e all the creature comforts.

Since it is a "piggyback", and not relying in any way, shape or form on the OEM PCM's fuelling strategy, and not "tricking" the PCM in any way with falsified sensor readings, the full fuelling stategy is controlled by the Motec.

This means we started with a blank sheet of paper in terms of a fuel map. So first, we needed to get it started. Then running. Then driveable... Every RPM and every throttle position. Not for the faint hearted!

We now have a base tune-up, and it needs to be tuned properlyto iron out some issues. We did about 100km of driving round doing real time tuning, but we need to get some dyno time to tune it properly.

On "cruise" the Lamda hovers nicely around 1.0. Remember the PCM is not doing closed loop adjustments here, the Motec is in complete control of all fuelling. Instantaneous fuel consumption on cruise looks the same as before (Measured with the sCANalyser).

One of the great things about the M800 (apart from being the best piece of kit available) is the detailed logging it can do while driving around, and then Phil can then upload the log into his laptop, and check out what is going on and make the necessary adjustments to the tuneup.

I can't reveal who's car this was done on. Nor can I give away too many secrets.

Next project is to reprogram the stock PCM One day.

I took some pictures, and video's, but i'll put them up another time. Time now for some shut-eye.

Thanks to Phil from Graphic Skills Racing for the great work!!

http://www.motec.com.au/m800.htm

Cheers,
Hymee.

 

That sounds very promising!
Is this the ECU you are planning on using with your SC kit?

 

Well, I guess it is by far the highest quality option. I'm thinking of offering different alternatives, but you get what you pay for! I'd dearly like to re-program the stock PCM.

Cheers,
Hymee

 

that soudns awsome, cant wait to see some numbers and future adjustments, keep us posted

 

Teh greetness :D This past month has been an awesome one for ECU development. Keep it coming! Thanks for the link Hymee

 

Congrats!
Motec M800 = $$$.
You're right though, you get what you pay for.

 

somebody might beat you to it, Hymee. congrats on getting the motec working in that fashion. its a little pricey tho



Price:

$3,527.70
inc GST within Australia

from http://www.horsepowerinabox.com/HPIA...tegory30_1.htm

 

Hymee's Supercharger is so close I can almost taste it :D

 

Hymee we did it the EXACT same way with the Megasquirt. It's easy to get any standlone working on the RX-8 as far as fuel only goes. We are working on the ignition right now. The Motec can read the stock trigger wheel so you shouldn't have any issues with splicing in. I even know which wires to use. The setback for us is we have been waiting for the code to be written for ignition. It is almost done. Motec is the best out there and certainly nicer than my Megasquirt. But you do know that even my little $200 Megasquirt can datalog runs too right?

 

RG would it be out of the question to have Hymee use your Megasquirt app for his SuperCharger to keep his prices much lower?

(I'm sure it has been discuss before but since u are around I'd like to here it from you anyhow )

 

He'll have to fight Richard for it.

 

RG,

We are already spliced into the crank angle sensor. We need to be: to fire the injectors at the right moment, and to get RPMs.

The Motec already gives us total control of ignition (as proven in almost countless Rotaries Phil has installed and tuned Motecs), it is just we have not looped it in yet on the RX-8. 1 step at a time.

I don't see why I can't offer this as one option for those with impeccable taste, and a uncompromising desire for quality, reliability and tunability, proven in the rigors of battle. Then we can have "more economical" versions as well.

Cheers,
Hymee.

 

You don't get it ya bastard. :D

Me (this bastard) and that other bastard (Richard) don't fight! We are mates. :D

Cheers,
Hymee.

 

You mate with Richard? :p
Silly talk from down under. J/K :D

 

why not just use the interceptor, it is cheaper than a motec and does the same thing.

 

I still don't understand how any of these units cost over $500...it is ridiculous

RG and Mega Squirt is proving that

 

Then you don't understand business operating expenses and overhead--much less profit margins. MegaSquirt is an open source project that relies upon free R&D costs, no fixed costs, no insurance liabilities and no payroll/benefits/tax issues.

It's sorta like saying you don't understand why PlayStation games cost $40-50 when it clearly costs less than $3 to mass produce the DVD and packaging.
________
VAPIR DIGITAL AIR ONE REVIEWS

 

I'm not trying to downplay the Motec. It's an awesome system. I'm just giving him a hard time.

 

I know I know I'm just being a snot about it :p

 

Interesting times as the chinese would say looks like people will have a choice of 6 different supercharged systems within the next few weeks .

HKS , PETTIT ,BLITZ , HYMEE , Richards ,Rotormasters were to spend the $$$$$$$$. :D

2 FOR THE Aussies 2 for the Americans 2 for the Japanese :D but which will be the best most reliable and cost effective power to $$$$ value ????

B...free
michael

 

Sounds great Hymee...hope we can see, hear and have a run in it in October

 

Love to see real work with Motec. I want the local have done will the fuel control! The Japanese has it all along and they are not sharing with us (since all the software are in Japanese!)

Well done Hymee. I am saving up now!

 

From a laymans point of view, that might appear to be the case. In reality they are worlds apart, and are essentially incomparible. There is good reason for the price difference.

But I'm not going to argue the case any more here. I've said this will be the "gold plated" option for those who want the best, and we have other aces up our sleeve for the "cheaper" options. But none of them are going to be any $2 peice of junk.

Hopefully I can release soon the availability of PlugNPlay wiring harness for the RX-8 and Motec. Oops - who said that?

Cheers,
Hymee.

 

Hymee will you marry me! :D

 

You are already legally married....