[sperry]

Originally Posted by AtomicLabMonkey

Any particular reason why? DI is good stuff and has far more efficient combustion, but I'm not seeing how tuning it would be all that different than manifold injection.

It won't necessarily make tuning easier... but since it resists detonation so much more, you'll be able to take it that much further and get real power out of a motor that will last longer than 5 hours w/o a rebuild.

I guarentee this DI/turbo motor is a result of the World Challenge TC cars getting to use forced induction in 2005. Mazda has spent an assload of money on making the 3 competative in Speed TC. Hopefully w/ the new rules and use of the 6, Mazda street cars will start to resemble the TC cars performance-wise.