I'll paste this on my profile description but before i prefer that you check what i wrote. And like i said before sorry for my english, this is a chance to improve it, i'm tring to use the least possbile google translate 
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I'm from italy, i live near Genoa, in a little countryside village.
I have a 1994 Samurai, 1.3 Iniection.
Due some watern burning problems, i decided to replace the engine with a bigger 1.6 unit.
I wanted to keep the fuel injection, i tried to search a complete 1.6 tbi implant, but i didn't find it, here in italy parts of this cars are not easy to find, so i decided to buy separately ( ok that was the worst idea ever ) , The ECU, and the MAP Sensor comes from different cars, i found a TBI+Intake manifold and exhaust manifold with the o2 sensor from the same car, the ECT sensor and the IAT sensor are from a older 91- Intake manifold that i bought as possible replacement (i can take a picture of it if you want)
Here's my configuration:
-1.6 G16A Engine (This Engine was from a carbureted vehicle i think, because on the original exhaust manifold there was no thread for the o2 sensor i don't know the year of this engine )
-1.6 complete TBI with its own intake manifold (91+ model)
-The code of my ecu is 33920-56B70 MT ( I bought this one because searching on the web i find that this code should matches the TBI 91+)
-The electrical wiring is the original from the samurai, except for one modification: I took the signal from the noise suppressor filter and bring it to the A1 Terminal on the ECU how it's showed on the electrical schematics.
- ECT (brand new aftermarket) ve375010 RY3216
- IAT 13650 56B00
- TPS ( I don't see a code on it, actually i mounted the original from 1.3 engine, i saw on the web that tey are equal with 1.6 one, i have removed the old one was mouted on this TBI just as try ).
- Speaking aboiut the O2 sensor i'll put a picture of that, actually i use the 3 wires with the black connector instead the original with 4 wires with the green connector,. There is another O2 Sensor on the catalityc converter that i left uplugged, I made a brand new exhaust removing the Catalytic Converter and i have the Calmini 4-1-2 Exhaust Manifold. My EGR is Bypassed With a Copper Gasket between it and the TBI, that keeps The egr passage closed.
I Don't Have connected yet the valve that controls the Cannister purge sistem.
- The map Sensor Actually is the one in the picture that i sent previously , Code 18590-80C00 (Not Sure about the Matching with the ecu)
- The distributor is the stock one 1.3 Code 33100-80C1
I live at 200 m Above the sea level, I have 2.8 BAR at Idling and also revving.
I know that is not the right way of thinking, but i don't think that the fuel pump is bad because with the original 1.3 engine all worked perfectly, I also tried to replace the Fuel Regulator with another one and nothing is changed.
I did the test Bolting on the filter the custom thester that i did (picture Attacched).
If you want thanother and more precise test tell me, and i'll do.
I addiction i Can tell you that i did a lot of "tests" tryng to swap some components:
Original 1.3 Map Sensor
Original 1.3 o2 Sensor
Original 1.3 TPS (Still mounted on the tbi)
Original 1.3 IAT Sensor
Original 1.3 Ect Sensor
Original 1.3 Ecu
With this differents components the car had still the same problem, nothing is changed.
I attach a picture of the ISC valve too so you can see his code.
I wanted to buy a G16A because my friend have this engine on his samy (Lovely carbureted version) and i always liked his torque, with this engine we can climb everywhere without any problem even without use all the Accelerator. It's hard to me to believe that 16 valves is so strong on low RPM but to be honest i never tryied this engine.
Thank you Seriously for your help.
.I'm from italy, i live near Genoa, in a little countryside village.
I have a 1994 Samurai, 1.3 Iniection.
Due some watern burning problems, i decided to replace the engine with a bigger 1.6 unit.
I wanted to keep the fuel injection, i tried to search a complete 1.6 tbi implant, but i didn't find it, here in italy parts of this cars are not easy to find, so i decided to buy separately ( ok that was the worst idea ever ) , The ECU, and the MAP Sensor comes from different cars, i found a TBI+Intake manifold and exhaust manifold with the o2 sensor from the same car, the ECT sensor and the IAT sensor are from a older 91- Intake manifold that i bought as possible replacement (i can take a picture of it if you want)
Here's my configuration:
-1.6 G16A Engine (This Engine was from a carbureted vehicle i think, because on the original exhaust manifold there was no thread for the o2 sensor i don't know the year of this engine )
-1.6 complete TBI with its own intake manifold (91+ model)
-The code of my ecu is 33920-56B70 MT ( I bought this one because searching on the web i find that this code should matches the TBI 91+)
-The electrical wiring is the original from the samurai, except for one modification: I took the signal from the noise suppressor filter and bring it to the A1 Terminal on the ECU how it's showed on the electrical schematics.
- ECT (brand new aftermarket) ve375010 RY3216
- IAT 13650 56B00
- TPS ( I don't see a code on it, actually i mounted the original from 1.3 engine, i saw on the web that tey are equal with 1.6 one, i have removed the old one was mouted on this TBI just as try ).
- Speaking aboiut the O2 sensor i'll put a picture of that, actually i use the 3 wires with the black connector instead the original with 4 wires with the green connector,. There is another O2 Sensor on the catalityc converter that i left uplugged, I made a brand new exhaust removing the Catalytic Converter and i have the Calmini 4-1-2 Exhaust Manifold. My EGR is Bypassed With a Copper Gasket between it and the TBI, that keeps The egr passage closed.
I Don't Have connected yet the valve that controls the Cannister purge sistem.
- The map Sensor Actually is the one in the picture that i sent previously , Code 18590-80C00 (Not Sure about the Matching with the ecu)
- The distributor is the stock one 1.3 Code 33100-80C1
I live at 200 m Above the sea level, I have 2.8 BAR at Idling and also revving.
I know that is not the right way of thinking, but i don't think that the fuel pump is bad because with the original 1.3 engine all worked perfectly, I also tried to replace the Fuel Regulator with another one and nothing is changed.
I did the test Bolting on the filter the custom thester that i did (picture Attacched).
If you want thanother and more precise test tell me, and i'll do.
I addiction i Can tell you that i did a lot of "tests" tryng to swap some components:
Original 1.3 Map Sensor
Original 1.3 o2 Sensor
Original 1.3 TPS (Still mounted on the tbi)
Original 1.3 IAT Sensor
Original 1.3 Ect Sensor
Original 1.3 Ecu
With this differents components the car had still the same problem, nothing is changed.
I attach a picture of the ISC valve too so you can see his code.
I wanted to buy a G16A because my friend have this engine on his samy (Lovely carbureted version) and i always liked his torque, with this engine we can climb everywhere without any problem even without use all the Accelerator. It's hard to me to believe that 16 valves is so strong on low RPM but to be honest i never tryied this engine.
Thank you Seriously for your help.