Quote:
Originally Posted by Sleeper
Wow. So the B58 is running close to 15 PSI stock while the N55 is running 9 PSI. Do the power output differences between the two make sense with a boost delta of 6 PSI? Must be very different tuning strategies for the two different engines.
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Turbo size, tuning, design all come into play.. Remember as the years go by manufactures are more interested in emissions. So this change may be emissions related. Car may produce much less emissions when cruising as it looks like without the turbos power may be down versus the N55. (just speculation)
Mike