header = tighten wastegate?

Brother EddieJ. · 08-03-2009, 12:46 AM

i read on the grimmspeed site that after you intall thier P&P exhaust manifold you need to tighten the wastegate 1 full turn. now it only makes sense to do the same for any after marked header.

i do have wastegate flutter, my boost in 3rd gear is right around 16-17psi but some days, more lately now it only hits 15psi. my boost gauge is a defi so i trust it.

i have never heard of this before, am i retarded??

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splitd · 08-03-2009, 02:06 AM

You're retarded

Just kidding, you set yourself up for it! I can tell you from my experience that when I installed a GT Spec Gen II header on my car, my boost went from 18 at peak to 16. So it makes sense that you would need to adjust the wastegate arm a little. I, however, left it as it was. 16 PSI is plenty for me, seeing as it's a DD.

08-03-2009, 12:46 AM	#1
Brother EddieJ. Scooby Specialist Member#: 181617 Join Date: Jun 2008 Chapter/Region: MAIC Location: frederick, md Vehicle: 2004 wrx Plain old white/326awhp	header = tighten wastegate? i read on the grimmspeed site that after you intall thier P&P exhaust manifold you need to tighten the wastegate 1 full turn. now it only makes sense to do the same for any after marked header. i do have wastegate flutter, my boost in 3rd gear is right around 16-17psi but some days, more lately now it only hits 15psi. my boost gauge is a defi so i trust it. i have never heard of this before, am i retarded?? * Registered users of the site do not see these ads.

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08-03-2009, 02:06 AM	#2
splitd Scooby Newbie Member#: 207591 Join Date: Apr 2009 Chapter/Region: Tri-State Vehicle: 05 Stage 2 WRX wingless WRB	You're retarded Just kidding, you set yourself up for it! I can tell you from my experience that when I installed a GT Spec Gen II header on my car, my boost went from 18 at peak to 16. So it makes sense that you would need to adjust the wastegate arm a little. I, however, left it as it was. 16 PSI is plenty for me, seeing as it's a DD.