well right now when i put the foot down just a haze of black smoke comes out but if the engine is running 100% will it matter if i keep flooring it
you can get away with about 5 seconds or so of flooring it. going any longer than that all depends on how much cash you have, and how big your balls are. black smoke is just unburnt fuel, so it hurts you in the wallet, and inside the engine, but i must admit that i fell in love with diesel because of it
currently i have an FS-2500 bypass filter installed that filters out the soot from the oil, which would really help in your situation. high soot levels in the oil are very bad, and the single most reason for early oil changes in diesel engines. with the high sulphur diesel, frequent oil changes were required due to the depletion of alkaline reserves in the oil. with ultra low sulphur diesel, thats not really the case anymore.. so you could probably go 100,000km on the same oil IF you get the soot out, and theres no coolant/water (the FS-2500 absorbs water as well...) getting into the oil.
Because the soot is so abrasive inside the engine, your butt dyno should give you a little bit of a power drop when its getting close to do an oil change. be sure to buy a good diesel oil like rotella, or splurge for a synthetic oil if your car doesn't leak/burn much.
forgot to add... the mods might want to move this post to the IDI forum