Fuel Injection

[Graham Templeman]

Hi.
I am a member of the 750 Motor Club and we currently use the 1108 FIAT engine to power our 750 Formula racing cars.
The engines are in fairly standard trim to keep costs down and reliability up and with a mandated cam to even out performance. Tuning is restricted to balancing the engine, lightening the flywheel and skimming the head. Induction is restricted to one carburettor choke while the exhaust system is free. All this gives a power output of around 95-100 bhp and a nice wide power band, which, combined with the light chassis weight, gives average lap speeds of 85-95mph, making the cars a second or so off the BTCC lap times at most circuits.
Some of us are currently proposing the use of fuel injection and I am looking at what issues we might have by simply lifting the standard ECU and using either single point or multipoint injection and fitting it to the car. We would presumably need to use some of the standard sensors such as the Lambda (O2) sensor and various temperature sensors but I was not sure about the extent to which we can get round the immobiliser and other (as yet unknown) problems.
The idea would be to get an engine running on a Dyno so that we can see the sort of power that we would be dealing with. In honesty, we would be looking not to increase performance, but to maintain it at around the current levels but using modern technology and providing something that is easier to set up. The alternative would be to use an aftermarket ECU such as Omex or Emerald.
Any comments, suggestions or ideas?
Graham Templeman

 

[Eklipze3k]

Hi Graham and welcome to the forum

If I were you, I would cross post this thread in the Cinq/Sei section as a lot guys there are very familiar with this engine and the associated injection systems.

From my limited knowledge, using the standard ECU and a variation of the "mckcrich" chip will bypass the immobiliser for a lot less ££ than an aftermarket ECU. I think there is a pin out diagram for the standard ECU somewhere in the forum too, which will give an indication of which sensors will be required to run the engine properly.

 

[Graham Templeman]

Eklipze, thanks for the reply. You say that

"using the standard ECU and a variation of the "mckcrich" chip will bypass the immobiliser"

Pardon my ignorance, but what exactly is a mckrich chip and where do I get one

GT

 

[s130]

from else where I see (2006-2009 era)

"Cheapist way is to buy the mckrich chip from [email protected] They cost £42 delivered and disable the immobolisor and give a performance increase too."

Based on my quick research M. Rich and his chip seem to have dropped off the net.

 

[Eklipze3k]

Someone else makes them more recently but for the life of me I can't remember who it is now.