Quote:
Originally Posted by GrimmSpeed
All GrimmSpeed Up Pipes and HiFlow Crosspipes that have went out the last 2 weeks and all future Up Pipes/Crosspipes will now have 35% thicker stainless steel piping! This means that we now offer one of the thickest piped Up Pipes and the thickest Crosspipe availabe in the entire Subaru market.
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So what is the wall thickness now - 2mm or 2.7mm? Either way this is good, because 2mm or thicker wall is the way to get 304 stainless to reliably survive pre-turbo.
You should contact GST. I think they were having trouble getting aftermarket cross pipes to survive on their time-attack car (but that was a while ago too).