Soda Popinski Posted June 23, 2008 Share Posted June 23, 2008 Hey guys, I'm going to be making a heavy investment to upgrade my 2008 LGT. I'm going to change out the following: GTspec Unequal hedders & uppipe Invidia High Flow Downpipe Cobb CBE Cobb Intake Access Port with propper stage 2 map My question is: What's involved with changing the headders? They look easy enough to change, but is there anything I should be aware of? Gaskets? Lines? Fluids? Should I do the BOV now as long as I have the car apart? or when I upgrade the turbo later? I couldn't find any performance mods walkthrough for headders so I'm reaching out for help before I do anything crazy. Google found nothing but ads for car parts. Thanks in advance. Link to comment Share on other sites More sharing options...
PhilT Posted June 23, 2008 Share Posted June 23, 2008 There are walk throughs on most of the items you name, none are particularly difficult, just remember to use copious amounts of PB Blaster. Double Award Winning Legacy GT Wagon Link to comment Share on other sites More sharing options...
Soda Popinski Posted June 23, 2008 Author Share Posted June 23, 2008 There are walk throughs on most of the items you name, none are particularly difficult, just remember to use copious amounts of PB Blaster. I did a 'search this forum' for header replacement and came up with nothing. I just want to make sure that I don't get the engine apart, go "oh crap" I forgot to order this / buy fluid for this / block this off, etc... and then NOT be able to roll back if need be. Everything looks readily accessable, I just was hoping for a quick walkthrough and 'don't do this' and 'don't forget to do that' type of thing from members who have done this. *fingers crossed* Link to comment Share on other sites More sharing options...
NatesGr8 Posted June 23, 2008 Share Posted June 23, 2008 it's a straight forward swap. i would recommend getting new oem gaskets, and using a torque wrench when putting things back together. You're car is new, but i usually use penetrating oil on all the bolts to help things come apart easier. Also, i would not put a bov on, i believe they mess up the tuning, unless its a 100% recirculating bov. I'm not sure if they're out yet for 08, but you might want to do a search for "vacation pics" to get a little more insight as to whats needed when taking things apart/putting them back together. Link to comment Share on other sites More sharing options...
harman.khinda Posted June 30, 2008 Share Posted June 30, 2008 You defintatley need two people for the header install you have to "stretch" them out a bit as your putting them on and they should pop right on. Link to comment Share on other sites More sharing options...
boosten-n-bluntin Posted August 5, 2009 Share Posted August 5, 2009 i just did the same swap as your looking to do its not too bad just set aside a good 4 hours and some w-40 . my only advice is get new up pipe studs. the old ones get frozen in the old up pipe and are impossible to get out Link to comment Share on other sites More sharing options...
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