rx-8club.co.uk

How did it go? is it a big job?

I am thinking about having a MoTeC M800 to mine soon - be great to get some feedback.

Lock & Load

Hope this may help correspondance with motec australia re their systems.

Hi Michael,

All Motec ECU's are suitable for rotary engines, though for the RX8 you would require the M800 (or M880). We have been developing software for this since the car appeared in order to control some of the more advanced functions, ie: the Oil Metering Pump and the Drive by Wire throttle.

We supply and support the MoTeC range of products through a worldwide network of dealers. Each MoTeC dealer is able to install, adjust and provide ongoing customer support for each product. In this case we would support the local dealer with the installation if required.

Regards,
Andrew Naumann
MoTeC P/L

This is the second reply:

Michael,
Both Motec Japan and Motec USA have installed an M800 on an RX-8, the factory ECU is removed. The engine is no trouble after a few issues are addressed:

1) Trigger wheel must be changed from 36-2-2-2 to 36-2

2) The DC Generator must be replaced with a conventional 3rd generation RX-7 (FD3S) alternator unit. It drops in, using all the stock RX-8 mounting points, belt, and terminals.

3) The secondary injectors need to be wired in pairs

The ecu will require the SERVO code for the OMP function to work, and an M800 will be necessary in order to get the OMP to work as we need the extra injector drivers.
The car however, is a whole lot more complicated. Removing the factory ECU will terminate the dash cluster (speedo, odo, temps, fuel level, warning lights, status lights, etc.), electronic stability control, power steering, cruise control, A/C control, engine cooling fan control, emissions control, secondary air injection, and so on. ABS still functions.

The information I've had from the US indicates that gains are very hard to come by on stock parts. Also, the intake system seems to be very sensitive to how it is manipulated. It presents less than 100 kPa under the throttle at WOT - around 95 kPa. The (70mm) DBW throttle may be the choke point, not sure. There appears to be a trade-off in the design of the intake system that was very carefully examined and massaged to give the best end result. It goes to show that some manufacturers are putting a lot of effort into development - certainly in this case, where the engineers were given a target hp figure... Aftermarket tuning with the Motec ECU will come into its own with a modified race engine.

Cost would be retail for the M800, a wiring harness, new trigger wheel, fitting and tuning by a Motec dealer.

Regards,
Andrew Naumann
MoTeC P/L

RobDickinson

So basicaly MoTeC M800 = non street worthy car.

rx-8club.co.uk

Absolutely fantastic information there - thanks very much Michael (Lock & Load).

The guys doing it for me will be www.cityperformancecentre.com in Sydney who are also MoTeC authorised dealers and installers, we have the eventual aim to either supercharge, or turbocharge the engine - and it will be a 4port renesis engine.

I know they have installed the M800 onto Porsche's and have left the standard ECU in place to ensure the basics still work like the paddle shift transmission, etc. etc.. They are guru's with MoTeC and general electronics so I will keep you all posted on what they find, I wouldn't be surprised if they could install and leave the factory ECU in place to controll all the bits the MoTeC doesn't have to.


It is great that MoTeC have already been consulted on this.

So do you know if any other ECU's have been put onto RX-8's yet?

RobDickinson

oh - rx-8club.co.uk , you may want to look at http://www.rx8ownersclub.co.uk/ before registering any domains etc...

rx-8club.co.uk

Rob - mine has been registerd much longer than theirs

RobDickinson

Ahh, it points to mazdarotaryclub UK.

Personaly I dont like they way that forum works for non-members (I hope its just for non-members )

rx-8club.co.uk

Hi Rob,

What do you mean? I thought it was quite similar to this one?

RobDickinson

As a registered user, but not member, my posts dont seem to 'stick' straight away, and often take days to appear. Basicaly makes posting on there almost pointless.

rx-8club.co.uk

Hi Rob,

I'm sorry mate - I wasn't aware of this. I checked your details and you are a registered user (no probs. there).

Could you please test it for me when you get a chance - I haven't found any posts from you that needed moderating so it should have been ok.

Let me know.

RobDickinson

I've (today) posted a reply to this thread :

http://www.mazdarotaryclub.com/forum...&threadid=3117

Which hasnt appeard yet.

Actualy , doing a search, none of my posts have appeared at all. Do you need to be a paid up member to post?

rx-8club.co.uk

Hi Rob, I can see your reply just before my reply - this is it here:


That is weird, it is saying you have posted 3 times, but a search only brings up the one. We did have a problem a couple of weeks ago where we lost a days worth of posts - as we had moved the Forum to a new server.

Hmmm - can you post a message into the testing section for me?

RobDickinson

ok - posted, but i cant see it, hav had e-mail notification switched on, now off.


(I can see I'm last to reply to a thread.forum but I cnt see the reply/thread/post)