[jiujitsu11]

So, I've been trying to figure out what is the main contributor to a more pronounced turbo spool swooshing sound during acceleration.. I drove a tuned M5 that had downpipes and possibly a CAI, and it had a nice spool sound that I want to replicate on mine along with a more aggressive exhaust.. Will a CAI do it? like the AWE one, or is that mostly due to downpipes or possibly the tune?

Thanks

[jivom5]

catless primaries/secondaries should get you spooling through the exhaust

[pbonsalb]

Turbo inlets, charcoal filter delete and higher flow filters will add induction noise. A complete intake will as well. This can be sort of a whistle sound at times.

As note above, though, the real turbo spool sound is from an uncorked exhaust eliminating restriction. Secondaries help but also adding high flow cats or catless primaries do more.

Tune won’t do much for turbo spool but is good for burbles if you like that.

[NoMods]

when i switched to eventuri inlets and intakes, i can definitely hear it

[Maverik259]

Originally Posted by armoredsaint

when i switched to eventuri inlets and intakes, i can definitely hear it

Yes. This will change your world.

[NCRob]

Originally Posted by armoredsaint

when i switched to eventuri inlets and intakes, i can definitely hear it

Did you go from bone stock to these? I ask because I currently have Dinan inlets, charcoal delete, & BMC filters. I’m kinda wishing I would have just went full on Eventuri from start and wondering if I would still get a material improvement over what I have now(?)

Or, maybe just adding the Dinan CAI if it’s on par with Eventuri(?)

[NoMods]

Originally Posted by NCRob

Did you go from bone stock to these? I ask because I currently have Dinan inlets, charcoal delete, & BMC filters. I’m kinda wishing I would have just went full on Eventuri from start and wondering if I would still get a material improvement over what I have now(?)

Or, maybe just adding the Dinan CAI if it’s on par with Eventuri(?)

Yep. Bone stock to full eventuri inlets and intakes. Got it from autocouture and they had the best pricing of all sellers with free shipping.

[crypto]

I have Eventuri intake and inlets. I did the inlets several months after the intakes. I did not really notice much difference in sound adding the inlets. If you hold the stock inlet and Eventuri side-by-side they really don’t look very different inside (form wise) — so I’m not sure where more sound would come from anyway. The intakes make a huge difference.

[ResIpsaLoquitur]

Originally Posted by armoredsaint

Yep. Bone stock to full eventuri inlets and intakes. Got it from autocouture and they had the best pricing of all sellers with free shipping.

And on top of all that, they make the engine bay look like what an M5 engine bay should look like!

[greentrbo95gst]

Secondary catless downpipes and BMS intakes. I just swapped my BMS intakes for Dinan ones and not only I did not gain anything, but the cool intake sound is gone. Save your money!

[NCRob]

Originally Posted by greentrbo95gst

Secondary catless downpipes and BMS intakes. I just swapped my BMS intakes for Dinan ones and not only I did not gain anything, but the cool intake sound is gone. Save your money!

Much appreciated!

[StephenWyker]

Say goodbye to the cats and get a front intake -- mine sounds like a cummins at all times!

[limeypride]

Originally Posted by jiujitsu11

So, I've been trying to figure out what is the main contributor to a more pronounced turbo spool swooshing sound during acceleration.. I drove a tuned M5 that had downpipes and possibly a CAI, and it had a nice spool sound that I want to replicate on mine along with a more aggressive exhaust.. Will a CAI do it? like the AWE one, or is that mostly due to downpipes or possibly the tune?

Thanks

Eventuri Intake is all you need. Everything else is stock (that matters).

https://youtu.be/guu23ITZ7us

[AustinM4AlpineM5]

Here is a short video of my car with ER primary and secondaries catless downpipes. It’s loud, but does sound incredible.

http://https://youtu.be/FvScksUpCok

[NCRob]

What I’m wondering/debating about getting the Eventuri intake and inlets: Will I notice much sound improvement given my current stage of mods?
MPE
Catless secondaries
Dinan inlets
BMC filters with charcoal delete

OR, would a front mount intake like RK Tunes be better for sound?

[LouK]

Has there been any testing as to the front mounts blocking radiators? I understand the engine can still cool, but with surface area being covered I feel like it has to work harder.

[Maverik259]

Originally Posted by NCRob

What I’m wondering/debating about getting the Eventuri intake and inlets: Will I notice much sound improvement given my current stage of mods?
MPE
Catless secondaries
Dinan inlets
BMC filters with charcoal delete

OR, would a front mount intake like RK Tunes be better for sound?

If you already have Dinan inlets why would you go eventuri and not just finish with Dinan?

[NCRob]

Originally Posted by Maverik259

If you already have Dinan inlets why would you go eventuri and not just finish with Dinan?

The only reason being from what I’ve gathered on here in various posts is that Eventuri offers much more in the sound department. Someone even said they “lost sound” replacing charcoal delete/BMC drop ins with the Dinan CAI. And a couple have said they’ve noticed no difference. Again, just a lot of favorable testimony for the Eventuri. Never saw a single complaint only praise for it! I’m 100% chasing sound

Truth is I’ll likely just continue contemplating it until something used pops up again or someone on here saying they went from my setup or similar to full Eventuri and noticed XX% sound gain. Doesn’t take a lot to convince me to part with money lol!

[pbonsalb]

For the most noise, use cone filters that are not covered. My guess is they would be loudest if in the engine bay rather than behind the grilles. I like the full Dinan system the most, but would also expect it to be pretty quiet. For the most noise possible, I would focus on the exhaust. A loud enough exhaust will drown out the intake.

[NCRob]

Originally Posted by pbonsalb

For the most noise, use cone filters that are not covered. My guess is they would be loudest if in the engine bay rather than behind the grilles. I like the full Dinan system the most, but would also expect it to be pretty quiet. For the most noise possible, I would focus on the exhaust. A loud enough exhaust will drown out the intake.

Something like this?
https://www.moddedeuros.com/products...tem-cts-it-825

https://x-ph.com/mst-bmw-f90-m5-s63-...QaAjH-EALw_wcB

Would love to make something work with my Dinan inlets (other than Dinan CAI of course)

Yea, I have the MPE so it might drown out the loudest of the intakes I’m now thinking!

[pbonsalb]

I would study those and the BMS version closely to see whether you could adapt them to the Dinan turbo inlets. Probably it could be done by cutting back the connection to the cone filter and using a silicone coupler with a merge transition like 3.5” at the filter to 5” at the Dinan inlet. Those flexible couplers can be squeezed oval. But I would worry this would stress the already loose connection of the Dinan inlets to the turbos and cause air leaks and problems unless you designed a good support system for the piping/tubing after the Dinan inlet.

Might just be better off buying a system that starts at the turbo. Sell the Dinan inlets. I am not sure what systems start at the turbo and leave cone filters in the engine bay but there may be some.

And with a loud enough exhaust, how much of this intake sound will you hear? Is it even worth the trouble if this is being done for sound rather than any performance benefit? There is also a visual benefit if you like to open your hood to show off you engine bay.

[NCRob]

Originally Posted by pbonsalb

I would study those and the BMS version closely to see whether you could adapt them to the Dinan turbo inlets. Probably it could be done by cutting back the connection to the cone filter and using a silicone coupler with a merge transition like 3.5” at the filter to 5” at the Dinan inlet. Those flexible couplers can be squeezed oval. But I would worry this would stress the already loose connection of the Dinan inlets to the turbos and cause air leaks and problems unless you designed a good support system for the piping/tubing after the Dinan inlet.

Might just be better off buying a system that starts at the turbo. Sell the Dinan inlets. I am not sure what systems start at the turbo and leave cone filters in the engine bay but there may be some.

And with a loud enough exhaust, how much of this intake sound will you hear? Is it even worth the trouble if this is being done for sound rather than any performance benefit? There is also a visual benefit if you like to open your hood to show off you engine bay.

Yeah, I think you actually helped me sensibly change my thought process. You’re right, with my exhaust and secondaries, it’s foolish to think I’m really going to hear much anything else! So now I’ll flip the script 180 degrees and chase performance maybe