Fuel Pressure Regulator Mod

What this mod will do (apart from saving you a load of dosh for a FSE PowerValve) is to make your Twinky (2.0 DOHC 8V EFI) be more responsive, driveable, more balls or whatever you like to call it. Work even better in conjunction with a performance air-filter and/or performance exhaust system.

1. Locate you fuel pressure regulator. The round silver thing with 'WEBER' written on it.

2. Get out the alloy tamper-proof-cover. Don't drill it as you might bugger up something. A wack of a screwdriver and hammer should do it then leaver it out.

3. You will then see a 4mm allen key adjusting screw.

4. You need to turn the adjuster clockwise. Look at the 2 following pictures and you will see I inserted the Allen key at the '1/4 to' position and turned it to '10 past' position. Don't be greedy, keep it under 1/2 a turn.