[G80_Soom]

Originally Posted by siegester

Did they dyno that car on that dyno on that same day before the midpipe install? If not these numbers are guestimates at best

We did not do a completely stock dyno because didn't want to heat up the exhaust before install. We went off stock dynos that have been posted such as from RK Tunes and PSI. 10-15WHP is a pretty accurate "guesstimate".

[G80_Soom]

Originally Posted by TrentMeister

Idk sounds raspy, gotta hear it in person I guess

Any rasp you hear is on efficient mode(valves closed). No rasp when valves are open on sport or sport+! Deep inline 6 tone.

[G80_Soom]

Originally Posted by kj71109

Cannot thank you enough for putting this together. I have been following their Instagram for awhile, and I seen a couple other posters commented on drone, but I would like your opinion. Is there any drone present in 6th gear in efficient at a cruise speed of 60, 70, 80, and 85?

I can assure you no drone at all on efficient. With valves open on sport/+, if you turn off Active Sound Design, I don't hear drone either. In the video I have ASD on so interior noise is a little louder for the video.

[G80_Soom]

Originally Posted by G80SWFL

Any discounts on these ?

Here's my referral link for a discount!
https://valvetronic.com/discount/G80soom

[lch6257]

Thanks for the post and walkthrough, this seems like an excellent option, best sound I have heard yet from a G80. Bet it sounds even better in person for sure.

[barryc365]

Originally Posted by SteveChester

No for the UK annual MOT test - if you put catless downpipes and that exhaust you'd have no cats so it would not pass the emissions test.

Catless downpipes more important for any stage 2 type map I think so interested to see what other combo you could run and still pass.

I'm currently running catless downpipes, MPE and Bootmod3 stage 2 map on the F82 platform.

I think the main sensor is on the primary cat so you may have to do a swap for MOT? I'm not sure though, you guys have OPF etc too so probably a different system

Do you have a few years grace period with a new car or is it every year?

[F85MTuNED]

Nice! It sounds good IMO

That color combo strapped on that dyno looks familiar 😂

[Kevin_The_Clean1]

Originally Posted by evo-mike

There's a lot of midpipe options for the f97/98. Remus, eisenmann, akrapovic, etc. all can be purchased separately and run on stock muffler

The Remus & Akrapovic mid-pipe are no longer an option because they're not sold here in the US anymore.

[SteveChester]

@barryc365 MOTs apply to cars once they are three years old and are annual after that.

Not sure about the sensor - on the F8x you just need to turn off the CEL warning once you fit the downpipes.

[G80_Soom]

Originally Posted by F85MTuNED

Nice! It sounds good IMO

That color combo strapped on that dyno looks familiar 😂

Ayyy we're twinning haha! Yeah, I saw you on their page! Looks like with just the mid-pipe it's 11 whp off from the stock Comp numbers. Lines up with what I'm saying about the 10-15 whp gain

[barryc365]

I bought a valve controller while I await for this exhaust to be delivered. I've never used one before.

Does anyone have any experience with running a mid pipe and a valve controller? Is it a waste of time?

I was thinking I can have the valve fully open all the time or fully closed with the baby is in the car etc?

Does that make sense? Or unnecessary? Seems like this will behave ok in efficient mode anyway

[spool twice]

wow thats nice that there is room right in front to give one of the banks extra length for an equal-length design. The f8x chassis was murder to do this, you either had to do it near the rear axle or make a snake-like design on one bank to equalize both banks pulses.

[mills84]

Originally Posted by lch6257

Thanks for the post and walkthrough, this seems like an excellent option, best sound I have heard yet from a G80. Bet it sounds even better in person for sure.

The S58 sounds so much better than the s55.

[ashmostro]

Originally Posted by Kevin_The_Clean1

The Remus & Akrapovic mid-pipe are no longer an option because they're not sold here in the US anymore.

Link reference, please? Thanks!

[TrentMeister]

Originally Posted by barryc365

I spoke with them about it and also someone who has one on their car. No rasp or drone. These videos are hard to gauge, need to hear in person as you say.

Seems like a quality bit of kit

Relistened with headphones, abounds great. Seems like the mic was creating fuzz

[hellokitty]

Originally Posted by ashmostro

Link reference, please? Thanks!

EPA cracking down on mods that modify any type of emissions equipment.

Most retailers have stopped selling anything that deletes cats. Wholesalers stopped stocking them as well.

[ashmostro]

Oh, I thought something more specific to Akra.

The cat back doesn’t modify emissions equipment, neither does the short link pipe set. The long link pipe does, which is I imagine why Akra makes both SKUs.

I’m aiming to at least get the cat-back Akra…. Maybe the short link pipe as well which replaces the factory resonator with their own.

[iviegatron]

Originally Posted by TrentMeister

Relistened with headphones, abounds great. Seems like the mic was creating fuzz

Audio is not clear, seems distorted. Maybe the mic is too sensitive.

Apart from audio issues, is there anything special about this exhaust? I feel like any muffler shop can replicate this exhaust for far less. May or may not be aesthetically pretty with the welding, but seems doable.

[Kevin_The_Clean1]

Originally Posted by hellokitty

EPA cracking down on mods that modify any type of emissions equipment.

Most retailers have stopped selling anything that deletes cats. Wholesalers stopped stocking them as well.

Exactly. Deleting the secondary cats won't cause a CEL but it will increase the cars emissions which the EPA doesn't like.

[TrentMeister]

Originally Posted by iviegatron

Audio is not clear, seems distorted. Maybe the mic is too sensitive.

Apart from audio issues, is there anything special about this exhaust? I feel like any muffler shop can replicate this exhaust for far less. May or may not be aesthetically pretty with the welding, but seems doable.

Hmm probably, I honestly don't know tho. Most shops I've been to that are worth their salt want nothing to do with making things that get rid of secondary cats.

I got mine cut out on a very hush type of deal it'd be a whole other can of worms asking them to fabricate a full custom part like this lol

[barryc365]

I just got notification that mine has shipped…Yes!!

I ordered it Mid August so to get it a month or so later is not bad these days. Pretty decent!

Seems like the delays may have subsided