I would not try to reflash the OEM ECU. To many new things to consider.

I can supply the FAST hardware that will handle any boost level and use your existing multiport manifold.

If you're interested I can send you an estimate, but I'd need a few answers to these questions:
* Would you be using a distributor?
* What boost level?
* Do you have a throttle body?
* Target HP range?

Rich Nedbal
www.fastmanefi.com