Alfas gone, replaced
with a Scooby import
AO Silver Member
Join Date: Mar 2008
Location: United Kingdom
I watched a programme where they dyno tested 3 cars with unleaded and superunleaded. The higher performance the car the more increase you get. A Clio, Saxo etc gained nothing, an astra, vectra sized car gets next to nothing but the Impreza gained a fraction more BHP.
I believe the superunleaded is healthier for the engine but performance gain is limited really.
I filled up with BP ultimate by mistake once, my V6 felt slightly more responsive...... But maybe I just imagined it did. It didn't exactly blow me away. I won't be paying the extra for it to be honest.
At 10,000 rpm , no one can hear you scream.