just got a new rear box from powerflow yestarday and the car seems to run a bit smoother. is this just me or would it make a diferance..
such rear boxes are less restrictive that the OEM products and therefore, yes it would be a little mor smoother and at the same time, you would have released a few more horses!
Maybe a bit optimistic there lol. I wouldnt think a back box alone, esp with no other mods would give a few more horses. I might be wrong ... but the 888 was always stated as having the same bhp as the other Astra Turbo's and it has a Milltek backbox and a RamAIR filter.Originally Posted by d_ghedia
Fastest, Most Powerful & Only Mag Featured Astra In The AOC Cumbrian Region