best way to spend $3k - Toyota Yaris Forums

paultyler_82 · 12-25-2006, 07:41 PM

The 1NZ-FE, as most Echo, xB, and xA tuners have found already, is a well tuned and robust little engine, its problems have always come from the poorly designed intake and exhaust portions bolted onto the engine, the factory designed pieces have always been restrictive, again, thats why header and properly designed intake will net quite a good gain with this engine, but there's only so much power to be freed up. As for internals, any pistons and rods designed for the xB, xA, and Echo should work. Just be glad we're not trying to tune a Versa here, from what I understand, with that MR18DE, tuning is pretty much impossible without a whole load of cash to back your efforts up, the computer runs the engine in a perpetual lean state.

12-25-2006, 07:41 PM	#20
paultyler_82 View User's Garage Drives: 07 Meteorite Metallic Yaris LB Join Date: Jul 2006 Location: USA Posts: 441	The 1NZ-FE, as most Echo, xB, and xA tuners have found already, is a well tuned and robust little engine, its problems have always come from the poorly designed intake and exhaust portions bolted onto the engine, the factory designed pieces have always been restrictive, again, thats why header and properly designed intake will net quite a good gain with this engine, but there's only so much power to be freed up. As for internals, any pistons and rods designed for the xB, xA, and Echo should work. Just be glad we're not trying to tune a Versa here, from what I understand, with that MR18DE, tuning is pretty much impossible without a whole load of cash to back your efforts up, the computer runs the engine in a perpetual lean state.