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03-30-2009, 02:22 PM
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#1
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Super Moderator
Join Date: Jul 2005
Location: Okemos, MI
Posts: 7,540
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How much gain could there be from a more aggressive tune for premium fuel?
So, the LLT makes 304hp on 87 octane.
Assuming somebody cracks the PCM and figures out how to tune it (or have the CTS guys already accomplished this?), I wonder how much more power is sitting on the table from a simple change to 91 or even 93 octane and a corresponding advance to the timing parameters.
Anybody have any idea?
__________________
2002 NBM Camaro Z28 M6 - best ET 13.21, best MPH 108.9, best 60' 2.14 - 325hp/343tq - Lid, Corsa, SixSpeedsInc T56, Pro 5.0 w/ short stick, 17x9 wheels
1987 Buick Grand National - best ET 13.66, best MPH 101.5, best 60' 2.08 - 253hp/334tq - 93 chip, RJC, meth, Hooker catback, 160 t-stat, shift kit, no-hop bars
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03-30-2009, 05:51 PM
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#2
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Banned
Premium Member
Join Date: Oct 2006
Location: Goochland, Va.
Posts: 5,093
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very little if any.
It is very efficient as it is......
adding octane resist detonation, witch is caus by your more aggressive timing, that is not needed in an efficient engine to make more power.
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