drive185mph

the computer may have been fine but if your injector leads are toast it doesn't matter. changing the connections between the computer and the injectors is a cheap theory to test. As far as timing goes if the distributor was removed one of the bright-eyed mechanics might not have marked the location of the distributor when he put it back. If that is the case you may not be able to adjusts back to the correct timing with the cog it's on (Although you will be annoyingly close) An easy, ham fisted way, to test this is by having someone crank the car and just turning the distributor and gauging how close the engine is to starting. if one extreme of rotation give more activity then move then remove the distributor and move it separate from the rest of the engine over one cog, rinse and repeat. If you have eliminated all systems except the ignition this is a good way to find an adjustable range. also check to make sure that all the ignition leads are in the proper order. I realize my last to theories rely heavily on mechanic stupidity but If you think about it they do this stuff all day and could not care less if it breaks so they are bound to make some mistakes. once a competent mechanic forgot to fully install the plugs. any way good luck

the greater the number of cylinders the greater the ability to aspirate the same displacement so a basic JZ engine (leaving out turbos) has 3 liters spread over six cylinders with four valves per cylinder (24 valves) and of course six spark plug and six injectors this yeilds aprox 200hp (not bad) the 3 liter v12 in a 1958 Ferrari Testerosa has 4 valves per cylinder (48 valves) 12 spark plugs and 12 carb jets (which in that setup is aweful close to a injector) so the same size v12 has greater aspiration potential, has double the spark and better atomization of fuel and so despite it's greater bearing surface it makes more power 320 hp to be exact. obviously the two engines are not perfect comparisons but they do illustrate the point that it's easier to create a higher horsepower engine with more valves, spark plugs and injectors, than with fewer.