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Old 08-06-2018, 03:24 AM   #13
FRSBRZGT86FAN
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Quote:
Originally Posted by alf View Post
if this is a case and engine is protected by ECU against low octane fuels, that's awesome.
Quote:
Originally Posted by conehead View Post
You don't need a tune. The ECU will pull timing to protect the engine. However, since the engine was actually built for premium, your mileage and performance will suffer. A tune can't fix that.

It's protected on the stock tune, but don't expect to be making any power.

If at altitude and on 87 and your IAM value in the ecu drops to near 0 you're gonna be putting a bit of an extra load on your motor and it's going to take quite a hp drop.
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