Quote:
Originally Posted by Element Tuning
So now that we know DI pressure drops rapidly with aggressive intake cam advance at low RPM, why do you think Subaru/Toyota left that torque dip in there? 
I think they've known all along the DI pump was an issue and they dialed the the intake cam timing back in an effort to mask a problem with the DI pump performance. It's easy to sit back and say the OEM tuning sucks but these calibrators aren't dumb and they sometimes tune this way on purpose. |
I was thinking this in the car today, the engineers and people responsible for setting up this car had to have a reason for leaving a nasty dip there. If it was so easy to tune out you would think they would have done it.
Your explanation makes the most sense at this point.