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huge performance improvement -740turbo air box modification 700 1988

The easiest performance improvement to any Car. Not sure why Volvo designed the air filter box to perform so badly. Adding ducting from spoiler to air box has made a huge improvement to performance, next is a K&N filter.

note: thermostate & assembly removed, hot side left to vent (may block 4 summer)






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New huge performance improvement -740turbo air box modification [700][1988]
posted by  darylrobert  on Thu Sep 10 00:27 CST 2009 >


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