Post up some piccies would be the best thing.
I assume the powertec comes with it's own 70mm MAF tube.
How does the MAF tube mount to the filter, via an alluminium cone or via a bolted flange.
If a bolted flange, is this removable from the filter.
regardless of fitement to the MAF tube you need to remove the filter and measure the flange diameter.
The largest K&N flange from the universal range is 152mm
http://www.knfilters.co.uk/search/univcone.aspx
152mm flange diameter
http://www.knfilters.co.uk/search/pr...x?Prod=RC-5107
I reviewed using a K&N universal with an Ally trumpet, but I couldn't find a suitable universal filter and trumpet combination.
There is a 160mm K&N but only available from RCM and you pay about another £40 preimum for that. Which I ended up doing in the end along with an ebay 160mm trumpet, see
http://www.southeastscoobies.co.uk/v...?t=7782&page=3 , post No. 103 & 105