i think tomo is getting rid of his s12

What do you mean he cant find the sites?

no i mean he won't find or do anything on tomo's as tomo is selling it.

do the s13 injectors fit in easily then and do u need higher fuel pressure to make them run effectively? i'm only running a t25 so noy sure if they need changing but def feels like its leaning out at top end! would be interested in a chip if availabe but would the car need to go on a rolling road to set the car to the chip for better results?

The S13 injectors flow more fuel at the same pressure, so no change is required. It is beneficial and safe to run a walbro pump though.

emulator arrived and got it working with the mapping software today. short of a car to do anything with now though as the 190k bottom end gave up the ghost on sunday. Doh. hoping to find something i can do some experimenting with asap now

What happened to the bottom end? Anything spectacular? :D

I really want to hear that a s12 ecu has been remapped, there must be someone out there with a healthy setup.If i still had my old 8v setup i would be jumping at the chance :confused:

nothing spectacular except for the noise :wack:

I'll 100% be mapping the ECU for Lous new engine when it's done but it won't be suitable for sharing round. I think it would be much more sensible to do any mapping as 1 off as there aren't really that many same spec cars around

Nice nice :D !

P.S: in your ecu mapping does the 4 or 8 spark plugs system differe or doesn't matter?

I think I've answered this 5 times now :trout the ECU is different and the pictures you sent me did not have a 28pin eprom present in the ECU.

I've never touched an 8 spark s12

:o sorry

Im seriously interested in assembeling all the kit for this, or paying someone else so map my ECU.

Do get all the kit together one bit that is distinctly laking is a rom file/locations file to use with LiveEdit. Then I need an emulator chip for live editing, and a EPROM burner to save the final mappings to. Oh and a load of earthing straps so nothing gets fried.

Is there a difference then between the MK1 and MK2 ECUs? or even with the ECU from a CA18ET powered bluebird?

The mk 1 ecu doesnt have a rev limiter.

The Mk1 is completely different inside

Any one have pics of the inside of a MK1, I have a MK2 one which I will open in due course (once I have sold the bluebird)

I also have a spare bluebird one so I will see if that has the same chips inside.

Does anyone happen to know if the ECUs are interchangeable even though they are different?

In all honesty am I better off looking at an aftermarket ECU with it being cheaper and more flexible in the long run?

Search on SXOC, both different ecu's are there in a thread in s12 section.

The ecu's are interchangeable.

Its not worth going aftermarket if time is invested in mapping the standard ecu.

According a good contact on club s12:

"MKI has two plugs on the ECM and MKII has 3 plugs. MKI has vacum dizzy where as MKII has electronic advance. you can't put a MKII ECM in a MKI or vise versa. as for MKII tuning I know a shop that wants to crack the ECM they just need time and an extra ECM...so this is not going to happen anytime soon. My best advice would be to try megasquirt, and blaze new trail. there is also a guide to set a base map for it so that you can limp it to a shop to have it tuned. That is what I would suggest. It is cheap, easy to tune, and works with damn near anything. the only hard part is getting the right info the its ECM. There are tutorials however on their site. Do a Google for MegaSquirt and see what you think"

i've used mk1 ecu on the mk2 and vice versa and had no probs.

Yeah, and Megasquirt really isnt that easy to install...

Time to bought on a mk2 ECU ;) .

What is the octane indice in U.K, please?

minor update, I've extracted the chip from a Mk2 ecu and scanned the rom image, and the fuel map is slightly different from the map that's doing the rounds on the net which I believe came from a Bluebird. so S12 and Bluebird ECU's are not identical (differences wouldn't cause much trouble though IMO)

I'm hoping to get the engine built and running on a chipped ECU by early march

cool, nice work.

I know its a bit cheeky but dont suppose I could get a sopy of the stock maps? or their location files? I really am seriously interesteing the in buying the ROM emulator and getting together all the kit to remap the ECU.

I have a EPROM burner :)

I shall be getting a burner to write the final maps to a fresh chip. But I would like an emulator so you can see what values are being accessed live for tuning purposes rather than just guessing.

All in you need quite a bit of kit. But finding the location files and getting a meaningful dump of the origonal chip is the hardest part.

You selling it then?

I attached the bin file on this thread I think.

I have a burner as well.

I have a burner, an emulator and a load of chips, all available on ebay. I'll share stuff once I'm done and I've got a car running well with a re-mapped chip

Top work.:).

been right throught the thread and didnt find it, not that it matters much.

Trying to bring this back on topic wasnt the origonal plan that a pro was playing with a members car, and once this had been done may fiddle with others?

If so I would be very interested in having them do some work on her because frankly re-tuning my ECU is a bit out of my league (probably) so Id rather get a pro to do it.

The way I look at it my cars had a different AFM fitted (Z32 I think) so the AFM curve is way out meaning Im over fueling like a good'n. This is ok on full boost, but it sucks on motorways at 3000rpm with -15 PSI as it gives me naff all MPG. Therefore its worth spending some real money to have this problem addressed, I'll get it back in fuel in no time.

Its currently over 22p per mile in fuel. If I can get that down to 18p thats £600 per year saving, so this is worth looking at. By bluebird on the same engine was 14p (29MPG), this car shouldnt be that much worse, in theory it could be better.

Doubt your car has a Z32 afm to be honest...

Do you recon its the stock one? I wouldnt know how to tell just from looking

It will be identical to a bluebird one

if you post up the number on the black box on the AFM, it should give the answer in FAST years an models the AFM is from.

i have FAST so if you post it up, ill look it up for you.

i think its a long number with a dash in the middle.

I have a copy of the emerald ecu software and am currently learning how to map the thing and also have access to a rolling road at the moment.

Are you running Emerald then?

Emerald system is the easiest to get to grips with. Dave Walker doesn't mind sharing knowledge, so you'll learn alot from his website.

Have a look at the Omex and DTA systems and compare how they do things differently

i have half a dozen different emerald maps running various specs for my engine if they will help anyone.

No I am not running an emerald ecu on my car. I am currently doing a degree and part of the course is learning how to map ecu's and how to tune them on the rolling road. I think Dave Walker is coming into see us as well because we are mapping up some emeralds and installing them on various engines. Kind of like a little compettition between students. If anyone needs anything then I have a lot of very knowledgable people around to solve tricky problems and it would be free help was what I was getting at.

I've already got a wideband gauge, but see if you can 'acquire' some of them :D

what about getting karl from emerald to pull his bloody finger out and sign off the launch controla and traction control updates!
If Dave is coming to see you, you will find him mega interesting. Hes not full of BS or 'spin' just down to earth making cars quick. really nice, funny fella whos forgotten more than most people will ever know.