They are very finicky like rotaries.Rotaries run best rich not stoich.Dsm's are very picky on timing and boost leaks and knock.Doing a timing belt on a 4g63 is harder than a d/b series honda all day.Add to the fact that on stock power levels the manual trannies are known to break on dsm's due to torque(which honda's dont have).A good running 1g will shock ALOT of Honda's with more hp due to a dsm's better powerband.I'm in that situation now where a friends LHT built Integra Gsr with 280 dynoed whp is running as slow as my Auto 1g fwd with basic bolt on no tuning.He calls BS on my times but i have my slips and plenty of witnesses.Some people are haters i'm a realist and respect all cars if done right.