When you fitted the 1.6 computer did you modify the wiring?
I took the signal from the noise suppressor filter and bring it to the A1 Terminal on the ECU; The original 1.3 o2 sensor has four wires and i have connected the 1.6 one with faston using only 3 wires from the original connector, (1 for the signal and two for the heater, i left the fourth position from the car wiring disconnected). I also left disconnected a second o2 sensor that was mounted on the catalyitic converter that i removed mounting a new hand made exhaust.
For what i remember these are all the modification that i did on the electrical wireness.
I don't know what i can tryng to do on this car, i tried to test all the components, i didn't find anithig.
I'm new here, i'm from italy, first of all i have to apologize for my english.
I have a 1994 suzuki samurai, i recently put into it a 1.6 G16A with its intake manifold and tbi, i'm using the original 1.3 distributor and ignition coil.
The car won't run properly, when is hot particullary, when i rev the engine it hesitate badly and is ovviusly undrivable.
I tried to use the original 1.3 ecu, map sensor, and lambda sensor, then i tried to put the 1.6 components and i tried to use another fuel injector too, but nothing is changed.
I don't have ECU Errors.
A strange thing that i have noticed is when i disconnect the Coolant Temperature Sensor The engine seems to run almost perfect, if i plug it, i always have the same problem.
With the orginal 1.3 engine fuel injected i never had no fuel problem at all ( i put the 1.6 because the 1.3 engine was cracked somewhere and it had an water burn problem).
I don't know what can i try to test so if you can give me some advices i would be grateful.