I have a customer who decided to do his own turbo swap into his car, he put a series 4 motor into a series 5 convertible, then he gave up because of all the headaches. Anyways, sofar i have changed the harness over to a s4 re-wired about 10 wires in the #1 connector, re wired the crank angle sensor, re-wired the leading and trailing coils, the two connectors on the engine harness won't plug into eachother, (midway up the harness on the inside) anyways, we can't seem to get a spark, we have fuel but no spark, any more info would help, I usually don't deal with this, i told him, if you have an s5 use a s5 motor but he didn't listen. Thanks.

 

someone is probably going to tell u to search , there is many ways to go upon doing this

 

Standalone. Seriously. You'll spend way too much time making 20 year old technology work, and after it's all done, you'll still be stuck with a limited ECU and hacked up wiring.

Megasquirt, Microtech, Haltech, etc...When all is said and done, you'll have far few hassles if you know how to tune it.