Technical More power from 1.1IE

[Uno driver]

I've recently fitted electronic fuel injection to my car as I had some problems with carburator. Car now works great, fuel consumption is much better, but I've lost quite a lot of power especialy at higher rpm.

If I disconnect lambda sensor, I get a little more power, but still less than with carburator. It looks like the engine doesn't get enough fuel.

I was driving another Uno 1.1IE and as I remember it was lazy like mine now.

Is there any simple way to get more fuel from injector? I was thinking about making electronic circuit that will change signal from lambda sensor when i have the pedal fully pressed. I don't have cat fitted, so there will be no harm.

(Is it possible that the reason is vacum advance regulator? I fitted a new one, but it is for 1.0 engine)

 

[Uno driver]

Injection unit is from 1.0IE, ECU is from 1.1IE, I hope this is not the problem?

 

[stealthstylz]

My 1992 Fiat 1.0ie is much slower than my 1989 car with the same engine but on a carb.

Matt

 

[Uno driver]

I solved the problem. I had old air filter that came with filter housing from IE version :bang:. After replacing it with new one, there is almost no difference in power.

Matt: IE version has a little less power because of catalytic converter. Mine doesn't have it, so I think power should remain the same.