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well i finally installed my perrin mbc. - sign connected to the wastegate + side connected to the hose coming of the bov to intake manifold. mbc set for stock did a run ran through 3rd gear everything g2g. adjusted the mbc for 1.5lbs ran again through the gears 1st gear 21lbs 2nd geard 25lbs and 3rd gear the same. which gear do i measure the boost at? all other ends are capped off that need to be. so what can be the misreading? anybody know please give me some help.
 

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Set boost by doing a run from 2000 RPM up to redline in 3rd gear. It should peak around 21 or 22 with a small amount of drop as you go toward redline.

Keith
 

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+1, use 3rd gear and tune for PEAK BOOST. It should not be set to 25psi - go no higher than 22psi on 93oct as Keith said. Nothing is wrong with the MBC - you won't see the same boost in each gear, because higher gears have more load and thus more boost is created.
 
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