[dpaschal]

I recently installed a Dinan Stage 1 (yes, I bought it for the warranty) on my 228 with the N26 engine. I thought others considering a Dinan tune might be interested in my experience.

I'm very pleased with the street additional power (based on the "butt dyno" test). However, the track improvement is negligible. My track experience is consistent with Dinan's dyno chart showing the power gains substantially diminishing above 5500 RPM.

If you're just trying to feel more power accelerating down an on ramp, I think you'll be pleased. If you're trying to improve track performance, not so much.