Originally Posted by AlohaXFire
I have owned three turbo'd vehicles and one supercharged vehicle. My last two were turbo VW's (GTI and GLI). Turbo upgrades are unique in that they make big power all at once. It is like NOS without the ill effects that NOS can provide. It is addicting and you NEVER get enough...(primary reason I went away from a turbo).
Turbo's are very easy to upgrade once the foundation is in place. the first step is to lower the compression. 8.5 to 1 is ideal. 10 to 1 (like the stock 3.2) is excessive and has to be addressed either through a double head gasket or re-ring. the next thing that this price list fails to realize is that this is a V-6 implying that there are two of everything unless you want to get REALLY exotic (ill advised). You will need two exh. mani's, two turbos, two downpipes, etc. European vehicles typically have a one size fits all fuel pump (with the exception of the new Audi that uses a Very High Pressure direct inject). Your volume of fuel is controlled by a fuel pressure regulator just prior to the fuel rail(s).
Turbo's for the most part are not instant. There is almost always some turbo lag. The larger the turbo the more lag. Of course ball bearing turbo's can reduce the turbo lag. Positive displacement Super Chargers provide instant boost (for all intents and purposes).
Your comment on the compression ratio is old school. There is no need to run such low compression on a turbocharged motor. Unless you are running crazy boost. Low compression ratio's result in greater turbo lag.
$4,200 for labor??
$1,200 for fuel lines and fittings??
Some of the prices are right in line (depending on specific part numbers). Some of the prices are very high.