03-28-2021, 10:19 AM | #1 |
Major
455
Rep 1,389
Posts |
Over boost, how does it work and what happens to it when you flash tune?
Always thought this was weird of the N55 M2, 'overboost'.
I understand it's time limited (10-15s?) and by its very name will activate if certain criteria are met, but what are those exactly and what is the refractory period? Is it limited by IATS and/or other parameters? Then when you flash tune the car, is overboost gone and your car makes whatever power the flash gives you? 369lbft sounds ok if it were all the time, but I had a 2l four pot custom stage 1 Tune VW car make 349lbft on the dyno. Kind of weaksauce that this 3L 6cylinder M car will make more torque than a 235i but seemingly reluctantly and just some of the time? |
03-28-2021, 01:26 PM | #2 |
Second Lieutenant
120
Rep 259
Posts |
If you tune it then you get all the max torque all the time. And youll be making a heck of a lot more than 369 tq. So i dunno what you mean by weaksauce when your comparing a tuned vw car to stock. And someone correct me if im wrong but overboost is only on the first few gears
|
Appreciate
0
|
03-28-2021, 10:25 PM | #4 |
Major General
5564
Rep 5,378
Posts |
BMW underrates these motors. Stock M2s make 360-370 wheel torque stock and that torque is spread over a very wide powerband. Your tuned 2.0 VW might have made 349wtq, but I guarantee you the M2 is making more torque and sustaining it longer. That's the advantage of displacement.
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|