garygbnj Posted March 28, 2006 Share Posted March 28, 2006 Just got my 06 lgt. My suggested hp boost is sti turbo,intercooler,intake manifold and Cobb remapping device. Also suggested are a wrx type bov and aftermarket catted downpipe. What is the difference between a bov and a bpv? Is the stock uppipe 3" diameter? I would want to match the aftermarket downpipe to the stock uppipe that I will be keeping. My catback is a borla. Thanks gary garygbnj@optonline.net Link to comment Share on other sites More sharing options...
whitetiger Posted March 28, 2006 Share Posted March 28, 2006 Search, please for all the answers you need. BTW the up pipe is not connected to the downpipe directly, There is a turbo in between. Link to comment Share on other sites More sharing options...
Xenonk Posted March 28, 2006 Share Posted March 28, 2006 Just got my 06 lgt. My suggested hp boost is sti turbo,intercooler,intake manifold and Cobb remapping device. Also suggested are a wrx type bov and aftermarket catted downpipe. What is the difference between a bov and a bpv? Is the stock uppipe 3" diameter? I would want to match the aftermarket downpipe to the stock uppipe that I will be keeping. My catback is a borla. Thanks gary garygbnj@optonline.net BOV = Blow Off Valve BPV = By-Pass Valve (or even a typo since "O" and "P" are next to each other) in other words, the same thing. Stock uppipe is no-where near 3" dia. maybe 2" to 2.5" tops. You should get something as less restrictive as possible.. the more the turbo has room to breathe out, the better it can breathe in as well, you dont want the turbo to keep all that hot exhaust gases. Some had boost creep due to a catless downpipe, but you'll have to search for that information of why it happens. My guess is that it's based off the internal wastegate of the turbo and dealing the the stock EBC unit thinking it's not reading or seeing what it should be seeing correctly. Keefe Link to comment Share on other sites More sharing options...
korpse Posted March 28, 2006 Share Posted March 28, 2006 A BPV is the same thing as a BOV, but people generally use the term BPV when they are referring to a recirculating BOV. Also, don't increase the diameter of the uppipe. It can only cause bad things such as extra heatsoke to the engine block and more turbo lag. Link to comment Share on other sites More sharing options...
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