Going from 9.5:1 to 10.5:1-11? Turbo e85

[NOTORIOUS VR]

I also noticed that the hi compression makes Boost at any hint of throttle press ... like 2psi instantly where as the low compression motor took much more input to achieve boost at part throttle.

In short hi compression much more responsive ... its like holding back a wild horse... it just wants to run

The motor has noticeably throatier / crisper sound.


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You're running all the same turbo system parts, only difference between the two setups is CR?

[being3]

You're running all the same turbo system parts, only difference between the two setups is CR?

Exactly


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[pbonsalb]

Same tune, same everything, same motor but for CR bump? I can see a noticeable change from 8.5 to 11.5 but just bumping a point won't make any dramatic differences -- it might be a 2% power difference in naturally aspirated form.

[SM3]

Honestly it seems kind of silly to raise compression to get a little better spool up when there are 1000hp turbos that spool so fast its hard to control them. 5 years ago it made more sense IMO, now, not worth it.

Exactly my way of thinking!!