GT Black Series Exhaust Options
Member
Joined: May 2022
Posts: 154
Likes: 36
GTR
Redstar quality is great, the issue is the BS just does not sound good 
I also have a Renntech AMG GTR with 825 HP and catless downpipes ... it sounds waaay better than the BS and no drone!
My BS is going for a Renntech R3 upgrade soon, with their downpipes and 200 cell sport cats ... i hope i loose the drone!
I also have a Renntech AMG GTR with 825 HP and catless downpipes ... it sounds waaay better than the BS and no drone!
My BS is going for a Renntech R3 upgrade soon, with their downpipes and 200 cell sport cats ... i hope i loose the drone!
Junior Member
Joined: Dec 2021
Posts: 37
Likes: 5
far too many to list.
Aaah cool! I was looking at the Renntech as well. I'm REALLY curious how it sounds with their downpipes and cats! When are you doing it? I was hesitant to consider the full tune though because I don't have the best access to 93 octane.... Do you?
Junior Member
Joined: Dec 2021
Posts: 37
Likes: 5
far too many to list.
Lucky pumps! In Vegas I’ve got a few 100s too. Maybe I’ll keep a can of that in the trunk for road trips 😅
please keep me posted on the renntech stuff. I’m gonna get their bumperette delete.
please keep me posted on the renntech stuff. I’m gonna get their bumperette delete.
MBWorld Fanatic!
Joined: Sep 2008
Posts: 3,076
Likes: 28
From: Seattle, WA
99 ML430, 01 CLK55, 07 R63, 15 E63 Wagon
Has anyone in the US installed any exhaust systems on this car? I am looking to do a catted downpipe without needing to run a tune. I was leaning towards the Redstar stainless steel HJS w/ Supersprint center section and rear muffler. Unsure if I should do the x pipe or straight pipe (like RBR on YouTube). Supersprint so far is telling me they don't know if their in house downpipe with cats will kick on the check engine light or not for the US cars.
