I picked up my M3 in October of this year from the member OneFastSicilian.
I picked up this car because of all of the work/maintenance that was done to it (OneFastSicilian was not the one that did all the work to it). I have a kid on the way, and my zhp needed some maintenance, so my awesome wife and best friend convinced me to get an M3 while I can.
Initially I was super pumped, but the car wasn't quite what I was expecting. I came out of an Active stage 2 ZHP that was around 335 to the wheels.
I promptly purchased an Active Autowerke Gen 6 exhaust which gave me the illusion that I was going faster because of the sound. Still unhappy, I purchased SuperSprint V1 headers and a CPI CRT Cat/Resonated section 1 400 cel cats. This woke the car up a little, but I still wanted more (we all do). I also found that the K&N probably had never been cleaned. It weighed 5 lbs with gunk all over it. I took that out and replaced it with a BMC filter and sprayed the hell out of the MAF with cleaner.
Well needless to say, still didn't make the difference that I was looking for. I decided to take the car down to Frank Smith since he is local. I figured maybe a tune would help. He promptly put it on the dyno, and this is what he found.
Wow what is going on there? M3 with headers and high flow cats? 274? Why is it tanking a little after 6500? Well remember all the work that was done by the previous owner? One of those items was a Dr. Vanos. Frank told me that he had seen this before and it was a VANOS issue. At this point I am panicking because I have heard and read horror stories. Apparently if the proper BMW tools are not used, it will cause issues like these. In comes Dave (Dafoe) to the rescue. Dave was able to diagnose and fix the alignment. Dave said the exhaust side was a few teeth off I believe.
Well here is the next dyno, pre-tune just vanos aligned properly.
Getting better right? Now for the fun. Time to tune.
So lets get this straight, I drive in with 274 HP and leave with 307 HP? Wow not bad for a 106k mile car.
Here is the final comparison:
Now let me finish by talking about the feel of the tune. If you are curious its not magical, its still no supercharged car, but I can honestly say, I don't miss my old car anymore.
- The car is smoother, it feels like I have more torque in the bottom end and I don't have to make the car work as hard to get up to speed. I am old enough now that I appreciate the smoothness.
- The car pulls a lot harder. Enough said.
- Sport button memory. This is a perk to a tune. Must have for me.
- Piece of mind. I know the car is running right and that everything is in spec, including the valves (thanks Dave).
I am not sure if Frank is on this forum, but I wanted to say thanks for helping me fall in love with my car. It's nice to have a good guy like you near by.
I will update later in the week once all of the adaptations have taken effect and give a review of my normal commuting and drive-ability.