does anyone use these.. .what would you want to put in an sti running on poo 95 octane petrol

 

a new engine . Seriously only thing I would be adding is a couple of bottles of octane booster. I know millars do one that ups the octane decently but is not recommended for continuous use with a cat

 

I think Subaru put them in P1s at the factory build stage. Use at your peril.

 

in wr1's as well i heard .. know of a lad here thats well in to tuning cars he reckons there a great job

 

Yes, they are in all P1's and some other undisclosed models...

Quite a few people use them, including myself, but it is not well advertised. Sceptics abound, at the worst case they are expensive pebbles in your tank.

A few tuners use them as well