Confirmation on supplier would be good. Google search found Mobil and Shell??? But unsure.
Having had issues with Caltex in the past and at the time not realizing that 98 fuels aint 98 fuels, (much like oils) I would be very wary.
Is the car Manual or Auto? I only ask as mine was factory Auto but converted to Manual but still had the Auto ECU. It would pop etc when off the throttle (especially with gutted cat). Changing to a Manual ECU reduced it.
Edit* Great Flame Photo too.
Spotted a Black R34 with LED taillights in the undercover carpark at Belco Mall lastnite around 8:30pm ish.
also at the Mall today around 12:30pm, My Ex 4door was spotted. (Not by me).