Quote:
Originally Posted by PAImportTuner
You are right except the bold.
BMW is the exception. R56 MCS and 335i have very very minimal lag..
|
In your words, "minimal lag". That means they still have lag. For those of us that prefer, or insist upon n/a or SC "instantaneous" feeling, turbo's still can't cut the mustard. Personally, I
hate the BMW N54 and N55 because they have so little lag it ends up feeling like there's a hiccup in the ECU tune rather than a properly substantial turbo. If I'm going to suffer with a stupid laggy turbo gas engine, I want the turbo to be big enough to actually feel like a turbo. BMW approach is flawed in that they're trying to emulate an n/a engine, which you cannot do, no matter how much technology you throw at the turbo at this point in time.
I see you're confusing "lag" with "boost threshold". It's nice that modern DI Turbo gas engines are approaching the lush low-RPM torque of Diesels, but that is describing the boost threshold, not the lag, which is the time delta between requested torque and delivered torque while the turbo is within its operational range. Turbo's that are allowed to spool down will
always have lag, regardless how amazing their boost threshold is.
This is the primary reason the FT-86, or any high-strung n/a engine, will be significantly more fun than anything BMW can barf out of their werks with their current flawed philosophy.