I bought a turbo for my car. What I got was the turbo, manifold, wastegate, airbox, and intercooler from a '80 745i. The intent is to install it on my '89 535i 5spd. My shop has given me a rough estimate of $2000 to $2200 for installation. Considering I paid $400 for the turbo and stuff, the price is definately right compared to the Korman, etc. kits. Assuming it works.

Naturally, I've got some questions. The 745i had compression ratios ranging from 7.0:1 to 8.5:1. My car has 9.0:1. Will I need to use low-compression pistons, or otherwise lower my compression? The Korman website says their kits run from 5.5 to 6 PSI of boost, without any internal engine mods. The 745i wastegate allows 6 PSI stock, but it could be tweaked a bit to lower/raise that...

I've been told the stock fuel injection system will be able to supply fuel for 8 to 10 PSI of fuel without mods, is this true? Is there anything I should do to ensure that sufficient fuel is delivered to the engine? Don't want to go lean...

I have a Dinan chip, I imagine I will need to put the stock chip back in. Anybody with an '89 535iM that wants to trade their stock chip for my Dinan? ;) I have been told that the stock chips will allow for 100 PSI of boost by default, is that true?

Anybody want to recommend a good blow-off valve? Are there any wastegate upgrades available? Anything I should know?

TIA,
Joe Ording