I feel really good about mine with the current tune. Runs smoothly, no backfiring, no stuttering, great mileage (well, great mileage for this behemoth) and smooth power delivery all the way up to 6k. I have no reason to doubt it has 30 hp more than stock, which puts it at around 140, so mildly less than a Roadster. Which is plenty for me, no matter how much I flirt with the idea of finding aftermarket pipes and Carpenterizing...