TheLion
Well-Known Member
- Thread starter
- #1,951
Ok that makes sense. So the drop in temps may be the primary reason. The car feels quicker over all, but because power comes on much sooner the perception is the peak power is lower as there's not as much of a "buildup". "feelings" often lie and I'm interested in what is actually working better, not what is perceived as better, so that's why I questioned my perception, but couldn't dismiss it because of the four dyno runs and the boost curves on those I mentioned in my previous post.The important thing to remember is that the ecu uses a load based tuning strategy, so in your case the drop in temperatures would require less overall boost because it hits its targets with less overall pressure. If you were a boost based tuning strategy you would always see x amount of boost in all temperatures which would likely exceed the load limits set by the ecu, especially in cooler air.
The power is VERY linear now, it wasn't bad before by any means, but the power seems to be almost instant like an NA engine where there was a very slight lag before one wouldn't really notice until you've driven the car with both configurations.
I think the combination of the FP Calibration, ATM inter cooler and DV+ in enhanced operation with my 3.73 is a killer track / auto cross setup assuming there's no adverse affect on the power band with the DV+ in "enhanced" mode.
I always question modifications because the reality is, not everything after market is always better and some changes can actually hurt performance rather than help. Some times certain combinations of mods may be better than others depends on what other mods are used and how they impact performance.
So far I really like the response down low between shifts with the "enhanced" mode operation so long as I"m not loosing power across the RPM band. I'll have to see if I can do some runs on my known distance and see if I can hit 75 by the time I cross it, that would at least give me a good indicator the car is actually running faster and there's no negative side effects of using the valve in "enhanced" mode.
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