E46 M3 Valvetronic Designs Section 3

[9kracing]

STAHP

[4getr34]

🤣 i've already tried vivid ti and it blew out my ears, not interested in sunbeam as it sounds similar to vivid. i want to try this!

[9kracing]

I talked to some of the Castro Motorsports guys at Bimmerinvasion for quite a while...

That's definitely another avenue you can explore. It sounds like those exhausts are received very well.




I hear the owner takes a smidge of patience to deal with, fair warning.

[2002_FY_CAP]

I don't like the Valvetronic exhaust on my car. When opened it is way too loud for my taste, and when closed it is very raspy.

[4getr34]

I don't like the Valvetronic exhaust on my car. When opened it is way too loud for my taste, and when closed it is very raspy.

whats your section 1 & 2?
also you have the steel one right?

[2002_FY_CAP]

whats your section 1 & 2?
also you have the steel one right?

Stock section 1 & 2, and yes the steel one.

[CrisSilberGrau]

Update 12-6-24

I received the titanium version as a replacement for the steel. It's ridiculous how much better the welding and piping looks and fits compared to the stainless steel version. The quality control is clearly lacking. Vacuum controller boxes are different (I might have received an older version with this titanium unit), but all seem functional.

Titanium had zero issues fitting to stock Section 2 - actually fit pretty perfectly. The stainless steel unit clearly had issues lining up to the stock Section 2 and had a leak given the sound differences when driving through the RPM range.

You can see that the quad exits on both units just… yeah. They're bad on the stainless steel version. I tried to explain that the unit's exits were too close to center and that's why exhaust tips would rub the diffuser. The titanium version fit the stock diffuser perfectly center.

The last two pictures are how the stainless steel version lined up with the stock Section 2. Brand new exhaust hanger rubbers and the piping on one inlet is welded about 1/4 higher than the other. There's no way this aligns without forcing the bolts to tighten and twist the section 2 ever so slightly.

I'm at the end of my journey with this company. As everyone has already alluded to, these are manufactured in China and the quality control is absolutely terrible. I wouldn't recommend this product to anyone unless you want to pony up for the titanium version only, and even then I’d buy from Alibaba.

David






Sent from my iPhone using Tapatalk

I am no expert in flow dynamics but you cant tell me all those hard stops are actually good for flow? Also the TI version seems to have decidedly smaller piping diameter. I guess you get these purely for the sound and nothing else. I cant imagine they make more power than anything thats free flowing ie .Dinan SCZA SS Race...

[davidinnyc]

I am no expert in flow dynamics but you cant tell me all those hard stops are actually good for flow? Also the TI version seems to have decidedly smaller piping diameter. I guess you get these purely for the sound and nothing else. I cant imagine they make more power than anything thats free flowing ie .Dinan SCZA SS Race...

This is what I was trying to get them to acknowledge... with the valves closed, I would get severe bucking @ WOT. I got rid of them both and have cycled from a bunch of different Section 3s, ultimately settling on a debaffled CSL Section 3... hah.

[usdmej]

i've seen and heard nothing but terrible things from this company. they seem to stay in business despite making horrifically designed products because they invest so heavily in social media influencing

[0-60motorsports]

But dude just got a CGT and Bugatti hahahahhahha

NO seriously why cant a person that has that many resources build an exhaust that does everything valved and one unvalved. Its very very easy with all the info out there etc.