Subaru WRX Forum banner
1 - 1 of 1 Posts

·
Premium Member
Joined
·
5,595 Posts
a little late, but....

The ECU has anti-knock software. Check your owners manual. A tank of 87 octane won't hurt a thing. It'd probably be fine at 16psi (but run like crap) but if you have it all the way down to 8 psi it'll run fine on 87 octane. Heck, at 8psi 87 octane is totally appropriate. The premium is only for running 14 psi!
 
1 - 1 of 1 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top