Timing is everything.
Cold air is better than warm air.
Timing is everything.
Don't use exhaust gaskets on turbo cars.
Timing is everything.
Small compressors cause higher back pressure than large ones.
Timing is everything.
Transmissions don't like turbos.
Timing is everything.
Use the strongest wrist pins you can get.
Timing is everything.
More head bolts are better than less head bolts.
Timing is everything.
It's better to spend big money on engine management for a junk engine, than it is to put junk controls on an expensive engine.
Oh... and timing is real important too.