aftermarket ECU?

[thedutchguy]

You can buy a piggyback unit at a shop who does lpg conversions.
Not cheap, but It works!

[Chopper]

Flashing, or chipping works best on forced induction engines. They just have more latitude built into the design. Normally aspirated engines have much narower parameters for operation, by design they are pretty close to their optimum settings. Putting a supercharger on a naturally aspirated engine, does NOT make it a forced induction engine! You may (or may not) pick up a few HP doing an intake and exhaust swap, but expect little in the way of "seat-of-the -pants" type gains. When kids come to the shop with their Civic/Grand Am/ Acura and start going on about the 50/75/sometimes more, Hp gains from a chip... I smile and sigh a little inside. You MAY get a 10 pony bump... but honestly, that's about it. The S/C bolt on, is the only real way to get much more from this platform...and even its gain is pretty modest. You'll find the transmission won't take much more than 240 or 250hp. anyway. Save your money. Don't bother with magnets, ionizers, air spinners in the intake stream, or any of that performance enhancing crap. If it worked, you'd see it on cars at production...you don't think a 2dollar "Tornado" (sold for 60!)wouldn't be in every car made, if it did ANY of the stuff it claims?? No magnets on any Ferrari I've ever seen. Guys peddling this crap should be hung up by their scrotties. Wayne