Hi Guys,
I'm seriously considering taking Abbey up on their Uprev/MIlltek package and wanted to know how worthwile it would be adding HFCs, plenum and air filter upgrades in to the mix. HFCs are pretty expensive, along with plenum upgrades. I'm most interested in getting the nicest sound rather than increasing performance and everyone seems to rave about the HFCs. Are they worth £400 + extra hassle at MOT time? Do plenums & special air filters deliver aural benefits or are they primarily performance upgrades?
Also, I called Admiral with respect to uprev/milltek changes and want to charge me an extra £31 for them, fair enough. But they said that HFCs were "category 9 declined" for some reason and wouldn't quote me! What's the deal here?
Cheers,
DT