Black Boost Downpipes
Does anyone here have any experience with these? 100 cell Cats. Will this trigger CEL? From pics, the Redstar look nicer, but they only offer a 200 cell Cat (and other options with higher cell count but "larger in diameter?"). However, what counts is which one FITS and FLOWS best.
BB DP




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The Best of Mercedes & AMG
Last edited by BiturboSF; Feb 12, 2022 at 08:10 AM.
There are videos out there showing showing how cheap import downpipes are made and it makes every good welder cringe. Most of these downpipes have ZERO weld penetration and use no filler rod, and are not purge welded. That means they WILL crack sooner or later.
We try to use the least amount of welds possible. If a downpipes or exhaust is going to fail it will be at the weld joint. If you have a whole bunch of weld joints you have a whole bunch of potential failure spots. This is why we invested in two CNC mandrel tube benders, Its a vastly superior way to make an exhaust. Nothing against other sellers, but nothing coming from Russia, China or any place else can touch what we do.
There are videos out there showing showing how cheap import downpipes are made and it makes every good welder cringe. Most of these downpipes have ZERO weld penetration and use no filler rod, and are not purge welded. That means they WILL crack sooner or later.
We try to use the least amount of welds possible. If a downpipes or exhaust is going to fail it will be at the weld joint. If you have a whole bunch of weld joints you have a whole bunch of potential failure spots. This is why we invested in two CNC mandrel tube benders, Its a vastly superior way to make an exhaust. Nothing against other sellers, but nothing coming from Russia, China or any place else can touch what we do.







