![\"\"](\"http:\/\/specialtyz.com\/blog\/wp-content\/uploads\/2011\/07\/baquinostillenheader.jpg\" "\\"Driver")
<\/a>Somewhere in that picture is the Stillen Header.<\/p>\n<\/a>Pic from below of both headers installed.\u00a0 What a joy installing headers on a 4wd truck.<\/p>\n<\/a>Dynoing the Titan is a tad tricky due to the AT transmission.\u00a0 It wants to downshift as soon as one goes WOT.\u00a0 I had to start above 3800 RPMs.\u00a0 Blue run was after we installed ONLY the headers.\u00a0 No baseline before hand unfortunately.\u00a0 Red run was after we tuned the Titan for some excellent gains.\u00a0 To fully appreciate the headers a tune is a must on these engines\\trucks.\u00a0 You can see the AFR on the blue run was bad.\u00a0 Although peak WHP wasn’t crazy the gains throughout the band were huge.\u00a0 Peak torque shot up over 59 wheel torque.\u00a0 You can clearly see the the cursor at 4250 showing some sweet gains.\u00a0 Almost 80 wheel torque gained and 60 whp!\u00a0 Not bad for only headers and tune.<\/p>\n<\/a>I took a picture of what came off of Jason’s Titan’s manifold.\u00a0 You can easily see the crack.\u00a0 By law or mandate, Nissan and other car manufacturers are responsible for replacing this part since it deals with the cats (emissions components).\u00a0 Sadly though, the dealer will try to pass it off since its a hard job to do (replace manifold) and hard to see it while on the vehicle.<\/p>\n<\/a>Here you can see how the factory tied the factory manifold (TOP) in with the main cat.\u00a0 One reason they do this is to get the cat hot quicker and keep the cat hotter for cleaner emissions.\u00a0 This however does not help manifold longevity.\u00a0 The new shiny ceramic coated header is from Doug Thorley.<\/p>\n<\/a>These headers from D.T. had cleaner ports than the Stillen pieces.<\/p>\n