Cats misfire & thermostat?

Probably rental car vehicles running 87 octane and trying to set land speed records. 87 octane when it needs 91 will result in knock events, ignition retard, and much higher EGT's. Alfa QV's were 2.9L TT making 505bhp on premium...and they're capable of almost 600bhp tuned. But they probably dont do great on 87 octane. *EDIT* this guy is very obnoxious.
 
Sirius XM - Platinum 5 year plan With premium gas potentially hitting $8+/gallon by Summer, is anyone regretting buying a 14 mpg pseudo Baja truck?  No politics, please! Factory Bedside Decal Measurements? New 2026 Order Show me your pie! Uconnect Marketing Notifications
Sirius XM - Platinum 5 year plan With premium gas potentially hitting $8+/gallon by Summer, is anyone regretting buying a 14 mpg pseudo Baja truck?  No politics, please! Factory Bedside Decal Measurements? New 2026 Order

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