22 replies to this topic

[Elisha-The-Cooper]

Fitting lightweight cranks rods and flywheels will also help things

adding light weight components doesnt give you more bhp, purley speed surely.

x

[Racer_Pete]

So am I right in thinking that the ECU is the limiter on performance increases? Are there not any after market ones available, or 'chipping' for the standard?

There must be thousands of MPi's out there. Somebody must have found a way, surely!

Take a look at Specialist Component's website.

[wolfys_mini]

you'll be better off going for emerald

[minicooper1.3i]

So am I right in thinking that the ECU is the limiter on performance increases? Are there not any after market ones available, or 'chipping' for the standard?

There must be thousands of MPi's out there. Somebody must have found a way, surely!

Take a look at Specialist Component's website.

Nice one Pete!

Shame about the price for ECU and Loom

[wolfys_mini]

thats cheap

[Sprocket]

There is no substitute for the Mini MPi ECU!!

CAMEMS recon they have sorted the programable ECU problem using an MPi manifold, but its not a direct swap and also does not use some of the standard components of the MPi EFi system, such as the IAC stepper. No doubt they have it working but its not by far the easiest system to tune.

The L33 EJB car was SPi and used the Weber Alpha ECU. Subsequent later Rover Minis built for rallying or Racing never used the factory MPi manifolds, they were either the SPi manifolds or custom.

You will get the 100bhp with an SPi set up and a Standard production ECU ( just not one off a mini ) and makes it a whole lot easier to use a programable ECU.

A programable ECU should only ever be considered if the standard one is not up to the job. They not the be all and end oll of it. You will never get a programable ECU to control the engine as a productuction ECU would and you will always be fiddling with it. So when you can, you should retain the production ECU

THERE IS NO PROGRAMABLE ECU THAT WILL DIRECTLY REPLACE THE MINI MPI UNIT!!

fell free to prove me wrong

I suggest you bin the MPI manifold and fit an SPi manifold if you decide to use a programable ECU. Either that or build a custom injection manifold as others have done.

[Sprocket]

Fitting lightweight cranks rods and flywheels will also help things

adding light weight components doesnt give you more bhp, purley speed surely.

x

Partialy correct

An engine that is not accelerating will show no difference in power (much how dynos measure the power), however, if you were to measure the power of an accelerating engine, there will be an increase of power recorded. This is due to the lighter components absorbing less power to accelerate them.

Example, its hard to push a car that is heavy from standing still, up to speed, its easier to push a car that is lighter from standing still up to speed in a shorter time, less energy has been absorbed, but as a person, the power you have, has not changed.

What this means. It means that when accelerating more power is left over to accelerate the car.

Lightening the engine internals can be compared to lightening the whole car, less weight to accelerate, means more power to accelarate it.

[minicooper1.3i]

Cheers Sprocket!

In your opinion, what do you think would be ain ideal setup for the standard ECU? Also, is it worth taking the bore out to 1293 or 1310?