Right. Everything Greg stated is correct. And in some sense, as others have noted, 10 psi is 10 psi. No doubt about it. But, (and this is a very big "but") that 10 psi with a T03/04 turbo, depending on its sizing b/c there are a LOT of T03/04 hybrids out there, produces its 10 psi at a much lower temperature than would a S16g. That means it comes on with more power without requiring additional cooling. We have to remember that power in a horespower sense exists on so many more planes than just displacement, boost and rpm. We also have to consider the very important variable of _temperature_. That's why we all go to such troubles with intercoolers, CAI's, more fuel and such.

This isn't to say that this additional power of the T03/04 doesn't come with tradeoffs. As Dino and I constantly preach, you need to factor in the additional power the Garrett turbo pushes when figuring out the amount of fuel you need to supply. You can't merely apply the same equations from a S16g as you would to a T03/04. Another tradeoff, as Dino has noted is lag. I like where the S16g's power comes on. I wouldn't mind if it were a tad sooner, but all in all, I'm very happy with it. I do admit that when driving my brother's GS-T with a T25, the throttle response is amazing. There simply isn't any lag present. Push throttle, full spool, turbo thrust, and that's it. For around town driving, it's unparalleled when measuring the "fun" factor.

Good post Greg. I think many of us have been preaching the same thing for a long while, but it's never something that can be emphasized enough to dispel any misinformation that can seep into people's minds.

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Jason ESi-T

04' BMW 325Ci
91' Nissan 240SX
98' Eagle Talon ESi (sold)