19 replies to this topic

[sonscar]

Has it got sequential injection with programmable injection timing?Can it fire larger injectors twice per cycle like MEMS?Will it control these larger injectors at idle?Has it the facility to run two lambdas for inner/outer cylinders?Lots to think about.Steve..

[Wazzah]

Hi Steve,

The Haltech elite 1000 can do multi point, batch and sequential injection.

It has an entry screen for the number of injectors, the flow rate, injector timing and fuel pressure.

It can also handle a knock sensor and coil on plug set ups for 4 cylinders.

The wideband feature is through a CAN expansion device.

Their literature says it can handle up to 7 wideband channels and it is capable of individual cylinder trims.

Talking to the Haltech guy he said it could fire 2 injectors like the MPI set up in 3-4 and 2-1 order and suggested this as as a performance option down the track.

Regards

Waz

[Curley]

If you can find a way to add 2 more injectors (4 total) and 2 Widebands the Haltech can do fuel corrections to deal with the charge stealing of the siamese ports too :)

[Wazzah]

I was thinking of an SPI MPI hybrid where you ran 3 injectors. Standard SPI throttle body with short pulse widths on an MPI manifold supplemented by the standard MPI injectors on a trimmed pulse width. My JDM SPI has the cam sensor hole in the back of the block which would be needed to fire the MPI injectors. Steve's (Soncar) twin lambda idea would work perfectly with this set up as the middle two cylinders always lead the outer two in the firing order.

[sonscar]

MEMS uses large injectors to fire fuel into the correct cylinder timed so as to negate charge robbing.This is a small window .getting smaller with revs increasing.Typically the duty cycle is 25% or so.Two lambdas are needed to monitor inner outer cylinders to optimise injection timing.The same injector fires for each cylinder acting sequentially.If you cannot mimic this you may be disappointed.
Apologies if you are aware of all this.My experience is not Mini based but MGB based which is probably much less stressed.It is an expensive road and I would like you to get the best experience from it.Steve..