[mike@x-ph.com]

We offer VRSF, Wagner Tuning, Evolution Racewerks & CG Precision downpipes

We will soon be offering the Active Autowerke B58 downpipe as well

[lonewolfB58]

Anybody been running BM3 stage 2 with a catless DP ? How’s the experience? How long have you had it installed?

I’ve been running BM3 stage 1 for a few days & have a catless DP on the way to run stage 2 Although I’ve seen one review where a guy ran Stage 2 BM3 & blew his motor!😱 what’s your thoughts??

[toniree93]

Originally Posted by Wires

As much as it was said the B58 has no diverter valve, something is dumping a "whistle sound" on hard gear changes on my 2016 at lower gears. There is a 4-way stop by work that once you clear the intersection with the windows down, sound bounces off the stop sign with a clear "pressure dump sound" that I'd say was a diverter valve. It is 100% outside the cabin, and VERY noticeable.

Yoo you just described the exact problem I have on my stage 2 440i with a catted downpipe. Did you end up fixing it? also does this only happen on non-sport modes?

[blacksapphire440i]

Originally Posted by lonewolfB58

Anybody been running BM3 stage 2 with a catless DP ? How’s the experience? How long have you had it installed?

I’ve been running BM3 stage 1 for a few days & have a catless DP on the way to run stage 2 Although I’ve seen one review where a guy ran Stage 2 BM3 & blew his motor!�� what’s your thoughts??

I ran a stage 2 tune both OTS and a custom map (which also had flames) by F80paul with a catless downpipe for a good year on e30. No issues there. I ran stage 2+ ots e30 for awhile and no issues. Now im at the stage 3 or whatever with upgraded turbos and everything is going great.

not sure what review you saw but i believe the consensus was that it was not the tunes fault but rather a faulty fuel injector which caused the misfires. if you log your car, you want the cleanest logs possible to ensure that everything is going as designed. the boost level and overall demands that stage 2 runs is considered very low when you start to go up the totem pole.

[Wires]

Originally Posted by toniree93

Yoo you just described the exact problem I have on my stage 2 440i with a catted downpipe. Did you end up fixing it? also does this only happen on non-sport modes?

What I'm hearing isn't broken, its "as per design" as the engineers say.

I just don't fully know what I'm hearing. Maybe back up through the intake or something?

[dmanb2b]

Originally Posted by 2013mingrey335i

I’m running a Remus cat back ,AP intake just ordered a Wagner 200 cell down pipe and BM3
Will report after bootmod3 is installed

Funny, that's almost my exact setup with the exception that I'm on a AA catted DP and we're literally neighbors...Hopewell