[///M1]

It's about time the 135i goes under the knife! Recently, I did a dyno run bone stock to get a baseline figure and then see how the mods will impact the HP gain. Here is what I am thinking of doing, feel free to voice your opinions. I have decided to cherry pick, as opposed to go the 1-tuner-does-all approach (e.g Dinan, Active Autowerke).

If someone has the exact setup (possible, but unlikely), pls comment on it more specifically.

Stage I envisioned mods (all done pretty much at one go/simultaneously):

1. JB3 PnP
2. aFe DCI intake
3. Active Autowerke Intercooler
4. Dinan Oil Cooler
5. BMW Performance Exhaust (getting that one for 'free' as I have pts on my BMW credit card)

Stage II will focus more on suspension and handling, probably shortly after Stage I as the power increase will necessitate better suspension+geometry. Maybe some aerodynamics/wheels/gauges, but not likely to be 'performance' adders.

Dynoed stock car produced 280whp and 283wtq (on a hot and decently humid day). Any guesses for what these figures would be post-Stage I? Hoping somewhere around very high 300s (don't think 400whp is achievable though, maybe on Map 7 with Racing Gas).