Catted downpipes and reduced boost ?!?

bee615

Member
Hey guys,

Just installed a set of Livernois catted downpipes yesterday and loaded up the revised Torrie tune.

I think I am actually seeing less boost at part throttle in the lower gears then before but the car certainly pulls harder say from 40-50 mph.  Checked for leaks and all looks good.

Is this something anyone else has encountered or I am imagining it?

Thanks.
 
I can't be sure but you probably need less boost pressure for the same amount of power due to the higher flow  Downpipes.
 
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