Quote:
Originally Posted by Roman@ESS
You are correct.
Boost is boost, measured at the manifold it does not matter if it got there by a vortech blower, hks blower or hamster wheel. Not sure why anyone would think or believe different.
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There are many things that affect the boost pressure measured in an engine. The differences inboost pressure could be caused by many differences in the supercharger kit setups.
If you notice the cars will read a higher boost level when the air is colder in the intake. Manifold design, intercooler design, methanol injection, compressor cover size/flow and cam timing can all affect the way boost pressure is made. If you dial out some overlap from the cams you can get the car to register almost 2 more lbs of boost. Does it make power? No, it loses power, but it's higher boost. Boost doesn't matter, flow matters.
Boost levels cannot accurately be compared between two very different systems and blowers.
If anyone in the Miami area would like to come down to the shop and feel how capable a fast spooling low and midrange m3 is in 95% of your driving situations. Let me know.