Good call 120fly a factory ECU isn't the way to go...

I'm a Computer engineer and part time electronics geek and I thought about dicking around with a factory ECU then decidied against it just because the tuning was going to be a PIA.

I've seen a coupla of factory ECU grafts and both used as much factory wiring as poss, all factory sensors and the factory tuning.

If any of you guys are thinking of going EFI do yourself a favor and spend the coin and get an aftermarket tuneable ECU.

I use a locally made Link ECU to run fuel only is 7 wires, to run fully adjusable spark is another 3 last one I got for NZ$600
$900 for tuning must hurt!
I set mine up on the road using a wideband O2 and a Gtech then it's just a coupla runs on the dyno to smooth out the power curve.

Hey nismo_capri i spent last night studying ignitors Hmm so many interesting fetures and what they do and how to wire them
cheers Ive got plenty of reading and l
earning todo but im onto it
All the points you have made are valid and have helped me along with ideas thanks heeps . Have you checked out the mega squirt system

I recommend to steer clear of old screw type Microtech. Nothing like bumps retuning the engine for you.

Yeah I had a look at the megasquirt and it looks like a decent cheap option but I have 3 Link ECU's so I'm sweet for the moment

If you are looking at DIY check out the VEMS unit it's more expensive than the Megasquirt but it's a better design.VEMS SITE

This will go for about NZ$600 I'd guess
2nd Hand Link ECU
They sell brand new for NZ$970 New Link ECU

Here's the new Link ECU XLEM that I'm thinking of upgrading to.... when I find out what the extra $1100 is buying me.

Hey nismo_capri the 3 link seem a better option ,,,Mate i tried every dealer on that site the numbers must be old ..Have you got any current numbers for the sales departments in australia ....cheers

Sorry mate no idea, flick link an email...
I'm guessing you didn't check the website's listed there [url=http://www.mrtrally.com.au/performance/link.htm#Engine Management "Wired in" ECU's]Try here...[/url]
The link for AVO works too

Im (was) currently running a 32/36 weber downdraft carb on my Mazda 1600cc 808 but this last week been setting up efi.

Got my EA CFI TB today from the wreckers for $15 ($15 carby day at pickapart) and is now fitted (required drilling 4 new holes) to my weber adaptor plate.

The car is currently running Megasquirt ignition only. If things go to plan tommorrow it might be going (cross fingers).

Ideally I would make a new adaptor plate from a block of alu but if you have a weber adaptor it is an easy fit.

Currently trying to talk wolfey into doing similar thing with his 1200...

Well it runs.

Heaps more bottom end, even relatively untuned (using my R31 turbo map).

Sounds wicked with no air filter too.

Ill take some pics and post later