Well last night we started replacing my m52 (2.8l) cams for a set of S52 M3 cams from a 98 M3. My mechanic custom made a "cam timing" tool to time the new ones properly which was awesome for doing. We used the pelicanparts.com DIY on replacing/upgrading the cams which was also very helpful and MUST be followed or else you're risking a chance of screwing some major shit up!
The install took about a total of 4 hours but with making the custom tool for him for future use, it took about 6 hours. Pretty straight forward with the DIY. Found out that it's VERY important to have a m3 vanos which we did. It's also not a bad idea to change your vanos unit every once in a while as it can become very gummed up and almost useless. Other things I needed were a new valve cover gasket.
While he was installing the cams, I replaced my microfilter, brake switch, flasher relay, and made a custom clutch stop using BMW headbolts and an old washer we had laying around. The clutch stop is amazing and is seriously worth every second to make or would be worth it to buy one if you don't want to make one. I also added a new thermastat and water pump from understeer.com and did a coolant flush adding wetter water to complete the fan delete mod.
Let me tell you all, this car freaking halls ass. In all gears, there is a HUGE and I MEAN HUGE power gain. If I had to estimate, I'd say a gain of 45+ HP and no less. I was VERY impressed needless to say. The custom made chip worked great from Conforti (except the car didn't first the first time we tried to start it; I installed the chip backwards lol). Even my 2 friends that I took on a drive with me thought I had installed a supercharger or some form of F/I.
Next weeks project is removing the cat and making a custom bolt-on middle piece. This is so I can remove and add back my cat when needed :P
Anyways, was laying in bed and thought I'd share what I've done this weekend