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The AAN is cat free in the Rallycar, it's also 'Spinked' and a couple of other mods (larger intercooler, intake, filter etc), but is standard forced induction (kkk24k)... Historically I ran the car (pre AAN) with Castrol octane booster and lead replacement to help potential pinking issues, I've a gallon of the stuff left and, with a speed trial event looming, just wondered if it'd reap any (marginal) benefits?
Thoughts please folk.
85 WR Urquattro, 85 20vT International liveried RallyRep
93 MTMS2 Avant
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