Time for a wee update.
I've spent the last few months installing a DTM style CF airbox and an Alpha N management system.
These bits came in from Germany, made to an incredibly high standard and the quality of the finish is amazing. I went with 18cm runners and my car has 48mm throttle bodies. I really wanted to have a crack doing the install myself to keep costs down and learn a bit in the process. Removed the old airbox and intake manifold which was super easy and I took the front of the car and the grill off. To get the airbox and the intake to fit nicely I needed to move the electric fan for the radiator over 10cms, and then relocate the brake fuid and transmission fluid bottles. All of this I managed to do by modifiying the existing brackets. Wiring the Alpha N into the ECU harness was my biggest worry initally as cutting ECU wires scares me, but in the insructions that came with the kit were great and it was actually very easy. I needed to buy some proper crimpers wire strippers, heat shrink plastic and a few other tools to do a nice professional job. All worth it in the end. I then installed a TechEdge Wideband O2 system/sensor into the exhaust. This works seamlessly with the Alpha N software, so now the factory Lambda sensor has been removed and car is running a full closed loop system. The Alpha N and Techedge modules sit at the back of the glovebox nicely tucked away so you can hardly tell they are there. Plugging in the laptop is a simple procedure.
I'm a total novice on engine tuning, but with the help of some of the overseas M3 forum guys and also big thanks to Josh I've got the car to a tune that I am happy with untill Gavin Bellers is back up and running with his dyno and I'm sure wiil be able to tune it to its full potential. Even out of the box with no tuning on the base map there was a noticable improvement in power/pickup and response. And the noise is amazing. I've got a Supersprint backbox - tootling around town its fine, but give it some beans and it sounds like the old DTM car's of old :-) Outstanding !
I couldn't believe it when I turned the key for the first time and it just fired straight up. I was preparing myself for a massive catastrophe, few saftey checks as it warmed up and I was off for the first drive.
The Alpha N is only a piggyback system, so to revert the car back to OEM spec would be a very quick procedure indeed. Though I don't know why anyone would.
To further clean the engine bay up I've got new washer bottles, wiring harness and fuse box covers. Also had the rocker cover repainted as it was flaking badly and while that was off BM Workshop checked the valve clearances and shims.