Anyone do a Motec FI conversion

So my next question is would it be possible to make improvement to the K-jet either with better injectors, or a better control/chip so to speak to add some power to the early FI cars?

Would that even be worth it?

What year/model Mondial do you have and what kind of power increase are you expecting to see? Sounds like it would be better to simply remove the emmissions controls on the FI cars and install Webers (will the 79 intake manifold fit onto a FI car?)

Sean
Great questions.
The only specific Kjet mod out there now I know of is the Lenz system from Germany. It replaces the ecu and combines the ignition/injection ECUs (they are essentially seperate systems stock). I want to say that it costs about $4K but that was some years ago. This system is actually endorsed by Ferrari Deutschland and dealers install it - or at least they did when I was there. You can check it out yourself:
http://www.lenzmotorentechnikusa.com
To me, anything is worth it if it gets rid of the Marelli ignition, but I have extreme opinions about that so temper my comments.

There have been some other claims at increasing K-jetted cars from Nick's Forza Ferrari, but involve porting and polishing heads and all - that's all I know about that. They also sell Electromotive ignitions claiming a performance increase as well. I really cannot comment on them much.

And to be complete, Norwood offers a turbo kit for K-jetted cars, which are very compatable as we spoke with forced induction. There are also some guys doing supercharging, but each installation is unique.

A 2v manifold will not fit a 4v car. Not sure about a 2v carb manifold on a 2v FI, but probably will work. My 88 3.2 uses a set of cast manifolds from Modena engineering in Austrailia, 4 X 40DCNF carbs and a stock 308 airbox taking fresh air from the side scoop. Most folks I have talked to in Austrailia (Frank Capo) and some engineers in America (Carobu, among others) most estimate about a 30-40 hp gain with a better exhaust (I have a tubi) to take advantage of the increased flow (It is a system). It will feel like more because of more instant response as there is a sl. delay in Kjet response time. I am also looking at a simple Marelli ($238) distributor to allow easy timing and advance adjustments as well as to address my terrible experience with Marelli reliability (source of my extreme opinions). My own calculations put me at about 290-300 hp as well as I am shooting for 90 - 95 hp/liter which should be do-able on a 4valve engine. One option that opens up later is that I can put better cams in it which should easily put me close to the 100 hp/liter range.
While all of these numbers sound nice, my car is a street car and the improved response with mild power boost is all I need And did I mention the SOUND? Wow. Like everyone says, the carb's cars really sound better than the Kjet.

Anyway, enough of me rabbiting on. Here are a couple of pics from the conversion before the distributor replacement. Hope this helps.
best
rt

If anyone's interested, I put motec on my old BB512. I pulled the insides out of the carbs and made some tapered venturis and installed the injectors in the inlet manifold just under the carbs. The car sounded exactly the same as before (awesome) and looked like a carb car, but the difference with HP, torque, smoothness, starting etc was quite astounding.

I dont know what kind of a difference it makes on a carbed car, but i changed my 87 FI Countach to an electromotive electronic fuel injection and distributorless ignition, and the power gains were incredible. Absolutely night and day.

Hi Peter,

I'd be very interested in hearing all the details about the Motec set-up on your BB...Thanks.

Regards,
David

David, what in particular would you like to know? I've mentioned how it was done. I was really happy with being able to keep the sound and look of the engine/intake yet have the benefits of FI. Ask away, and I'll do my best to answer.

Peter,

On the motec what is you finally spend to get it all sorted out? Are you a computer genius? Where you able get the baseline Motec to work pretty well? How did you tune it and how difficult was it to tune all the street parameters like extra idle speed when the A/c flipped on etc? Ferrari does a good job in compromises between the street and the track. Were you able to easily map all the compromises needed to have a very driveable car with good power?

Bob, I'm in Australia, so i'm sure the prices would have no validity. Suffice to say, it was thousands (5-6 i think). I tuned it on the dyno, which, as far as i know, is the only way to tune it, as you need to put in a "value" for all throttle positions at all engine speeds. I used the standard BB512 switch for fast idle when cold (the motec took care of the mixture) and it didn't have anything to pick up the idle speed when the A/c came on. I don't remember that being a problem though. The car was infinitely better to drive on the road than it was with carbs, and definitely made more power everywhere and started immediately hot and cold. remember, with FI there are no compromises for driveability v good power. You just set it to be spot on everywhere, and it is!