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  1. POWERTRAIN MODS - ENGINE / TRANS / TURBO / EXHAUST
    can i take a dohc head off one car and bolt it in . i have a 1999 2L gls. runs great but i have always got better mileage on twin cam heads. what parts, wiring and sensors would i need. does anyone have a walk through on this surgery? or has is always been a full block swap. would like the up'ed...
  2. VW Jetta / Bora MKIV 1998 Euro,1999.5 US -2005
    So, I've been considering taking 20-30 minutes out of my busy life to get a K&N High Flow Filter, and do the Swiss Cheese Mod. The only questions I have are: Does this mod affect the gas mileage? Is there a possible way to replace the AirBox itself? If so, how much would it cost? Thanks
  3. VW Jetta TDI / Diesel / Bluemotion
    Well obviously all of the diesel Jettas get excellent fuel mileage. On wikipedia for the Jetta A3-A5(1996-2010) they list these engines(seems like a lot of variants), for the transmission I am assuming a manual is always going to beat an automatic for mileage because of efficiency losses, but I...
  4. VW Jetta MKII 1985–1992
    What kind of in-town gas mileage should I expect from my '92? Its a 1.8, 8V.
  5. VW Jetta TDI / Diesel / Bluemotion
    I've got a 2006 Jetta TDI. This is my first diesel and VW. I bought it used and have put 20,000 miles on it since 1 Apr 09. I'm getting 43mpg regularly but want to do some better. It's my daily driver so I do must be durable and not subject to weather changes. I need some advise about...
  6. VW Jetta MKV 2005.5–2010
    I have a 2007 Jetta 2.5 Manual. My gas mileage is about 22 to 23. I do a lot of city driving bu I still think that is pretty terrible! I've noticed that when I put in premium, I notice a difference..I get more miles out of a full tank the the 87 the gas cap says I should use. So..I am just...
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