Splice and solder. If you have a need to verify the intercooler all you have to do is pull one manifold and look for a stream of goo. Mine was leaking for unknown years and the car ran fine. A little water and antifreeze is harder on the mind than the engine. I got over some of the mental resistance to splicing with the Zietronix. Cutting wires in the ECU will get your freak on.

Les