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Just got my TMC stage 2 box for n20 328i. What can I say.. great service and excellent product!
Main differences between stage 1 and stage 2:
1) Addition of RPM sensor - this seems to have greatly reduced my problem of flooring the throttle in sport+ mode, not allowing the car to downshift, at 2.7-4k rpm and have the car jerking back and forth while accelerating. This problem also happens on my AFE tune.
2) Boost kicking in earlier - based on my dyno on stage 1, torque only really comes in at 2600rpm. But now with stage 2, it seems to kick in earlier at ~2000rpm.
3) More power at higher rpms - I always felt that power started to taper off around 5300rpm onwards. But with this stage 2 kit, it feels that the car maintains its power all the way to redline.
Overall this stage 2 product seems so much more refined than its initial release in terms of drivability. Also, I am getting so much more wheelspin now it's crazy...
Downside:
1) It's kinda hard for a non-mechanic like myself to connect the rpm sensor wiring when you have an AFE air intake blocking the way.
I will try to dyno when I have the chance.
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