This is probably going to sound stupid and pointless but here goes.

 

Just curious, but at the Custom exotics open day I was chatting to Chris Mayo and I was telling him how I wanted to simplify my engine bay. He was telling me about what MAC has done to his car regarding a different ecu or something and that in turn you lose the coil packs, CAS, AFM, ECU the engine wiring loom. I'm not 100% sure of the details.

 

Im guessing you only do this if your running high power and would cost a lot of money? or could someone explain a bit more about it really.

 

I'm just curious to know what you lose and what gets replaced when doing this.

 

Thanks,

 

Ant

its usualy done with engines running high power that exceeds the stock limits and needs perfect tuning ability with every sensor.

 

 

oh and yeah, its mega money, £1000+ for a stand alone EMS with out all the other bits

 

:(

Hi mate

 

You can loose the Coil packs and go for a driftworks remote kit.

 

The ECU can be upgraded to and aftermarket unit, AEM, Mines etc

 

The MAF would get replaced with a MAP sensor which uses pressure in the manifold instead of at the intake.

 

Not sure how you would loose the CAS?

 

Cheers

Not sure how you would loose the CAS?

 

Cheers

 

as far as i know, you can't

going by all the HIGH powered skylines, they still use the same CAS

I guess you would still keep the standard engine wiring loom?

 

I only ask as I found one of MAC's old posts that said

 

When I had my engine built and with all the supporting mods it made sense to bin the stock ecu and go for a full competition after market engine management system, here is a small list that system replaces and what we have removed.

 

 

Coil packs

CAS

AFM

ECU

(That nasty engine wiring loom)

 

 

All I was looking was simplifying the engine bay and wondered if I could do anything with the engine wiring loom. Chris told me what MAC had done so I thought I would throw the question out there.

 

Thanks for the replies so far.

 

Ant

The only thing I have seen for the loom is running the coilpack and injector bits under the plenum although it did not seem like a very good idea to me

You can loose the Coil packs and go for a driftworks remote kit.

 

I looked on the driftworks website and couldn't find them :D

 

Would there be any benefits in replacing them for the driftworks setup?

 

Cheers,

 

Ant

Hey mate driftworks do a remote coilpack kit. I think its designed for the Skylines but they will do one for the 300. The idea is that they can be put in a place in the engine bay which does not suffer the heat and temps that they do at the top of the engine.

 

I havent seen anyone with a 300 with one but when I enquired they said they could make one up for a couple of hundred quid.

Why loose the coilpacks? The coil on plug system on the Z is perfectly good - most modern cars are just switching to this system now. If you run out of spark due to very high boost you can run CDI on the packs instead of the stock inductive amps and get 1000mj per spark - that's enough spark to run a top fuel dragster! Even inductive you can crank up the dwell time enough to fire almost anything.

You'll always need some form of trigger on the engine so you may as well retian the CAS. If you switch to a crank trigger you loose the ability to run sequential injection and go from a 5v open collector logic level signal to a far more inteference prone hall trigger. Also you need to make a reference for it etc. etc. Some ECU's may need a new trigger disk for the CAS depending on if they can use the nissan pattern - my emerald doesn't so made a disk with a 36-1 ford pattern on it. Pic of my trigger disk is attached to give you an idea.

You can bin the AFM then use MAP or TPS/MAP for load indication.

You could keep the stock loom but so much would be redundant it's not worth it unless you want to put the original stuff back when you sell it.

On my VH45 I kept the section from the ignition modules to the coils and just binned the rest. It's a pretty simple wiring job if you know what you're doing.

I was just about to say that I'm sure someone will be along to explain why these arent very popular! :-)