Quote:
Originally Posted by riboyster
That having been said:
I recommend immediately dropping down to the 69mm pulley with an appropriate tune.
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Keep in mind -- If you do not have an intercooler most will not recommend the 69mm pulley. It may work... but the heat produced will slowly cook everything else in the engine bay.
If you are on E85 or running on 93 with the intercooler then you are OK.
I've asked several tuners about this, and none 'recommend' the 69 with no intercooler on 93. Some say 'you may be OK with light street driving' but none could recommend due to extensive testing. At 69mm the SC produces a lot more heat than power. There's a reason why a 68 and 67mm pulley weren't created. The rule of diminishing returns applies.
With the above being said, I am happy with the 72.5mm on both 93 and E85 non-intercooled. If you want to go to 69mm let me know and I will part with my pulley (i have no use for it, as i'm going to keep running the 72.5 that I have on now). There is also a person in the classifieds on here selling the 70mm.