Fabspeed Exhaust -- Too Loud?

[Cool_Capybara]

:ah:

Yes, I know...I never thought I'd hear myself saying that my exhaust is too loud either. From what I've read, no one else has seemed to think Fabspeed makes an excessively loud muffler either -- so I feel even more gimpy.

I had a Fabspeed Maxflow system bolted in along with their cold air filter. The feel is great...the sound quality is nice...but at any point in time when acceleration is occurring, the radio can no longer be clearly heard, and conversation is difficult. I know my girlfriend is not going to like what I've done when she next sits in it.

The sound is fine for the right mood, but on a normal basis, extended exposure is going to result in a headache...either from the sound, or the complaining passenger. And I even have the hard top on currently. The place that installed it says they double checked to make sure there were no gaps in the installation.

Has anyone had any experience with either a silencer or somehow adding a functional soundproofing to the interior?

Thanks for any advice!

[yoyo7]

Cool,

That's a bummer... last thing you want is a headache when you take the car out for a drive!

I have the Fabspeed exhaust on my Boxster and the Growl is much louder when you punch the pedal. Big difference vs the OEM for sure...

I guess it boils down to the "eye" or in this case the "ear" of the beholder.

I really like the throaty GRRRROOOOOOOWWWWLLL.

[CVstarBoxster]

but for the right price, I'd be willing to take it off your hands.

[ekam]

I think the noise is probably from your cold air intake which is right next to your ear.

[jaykay]

hmmm...I didnt get one because I thought they were too muted for my tastes but I only heard it on the outside of the car.

[Johnny Danger]

Bottle up all of your drone and send it to me !!! The louder and more aggressive the sound is, the better. In fact, as of late, I've grown bored of my aftermarket exhaust, which incidentally, has a very race oriented sound, and I'm thinking of doing something drastic like swapping it out for a full on race exhaust . Then I'll back up to the front door of the nearest vegan cafe and let it rip !

[linderpat]

subscribed. I am looking to beef up the sound on my stock 03 S.

[michaelpetersen3]

I just did an install of BOTH Fabspeeds Supercups and Fabspeeds Maxflows. I analyzed them on the street, the track and the dynamometer. More info then you can dump into a single blog so I wrapped it up into a video.

After looking at all the pro and cons, I would recommend the MaxFlos'. Net gain of 24HP, 19ft-lbs and 17 fewer pounds, and the best overall sound quality.

Find how who I came to that conclusion here: https://youtu.be/MdCQg2tJFYg .

[Elmer]

Loved the video and explanation. Well done test method.

Have you considered the 987 airbox and IPD (or similar)?

[michaelpetersen3]

Originally Posted by Elmer

Loved the video and explanation. Well done test method.

Have you considered the 987 airbox and IPD (or similar)?

I have considered IBD. As an recovering engineer, i always look at the physics first to see if it has potential. Some of the marketing content for IPD seems appears to be a little "snake oily", so i have been having reservations. Its about $1100 for both the plenum and 74mm throttle body, and I find it hard to believe that it will really deliver 30HP and 35ft-lbs. However I have not seen any data proving the results valid (or invalid). If I ever do purchase and and install I will post the results.

https://www.fabspeed.com/porsche-986-boxster-ipd-intake-plenum/

[bg305]

@michael

Thank you for putting that video together, great testing methodology.

I recently purchased a 01 986 s that already had the fabspeed headers / maxflow exhaust and I think the sound is incredible. My last "fun" car was a chevy ss with an LS3. I thought I was never going to enjoy the sound another car as much as that ls3 and I was wrong, the music is just in the higher revs now.

I am going to research ipd intake, I agree it sound like a lot of power on the claim side.

Question on the fabspeed tune you have. One thing I noticed about mine is that I have less emissions monitors then I am used to seeing (was not a problem for my ny emissions test). All the monitors I have are green and there is no sign of any issues, but there are just less.
This first image is a scan of the boxster with a basic innova 3100


This one is the boxster with a foxwell scan tool


And this final one is to contrast, it is my 2019 pilot with innova


I know the pilot is much newer and might have additional monitors from 2001, but I am pretty sure there were originally more than 5. Have you noticed anything like this since you got the tune?

-Brian

[bg305]

I realized my last post probably dissevered a separate thread after I put a bit more thought and detail into the question. Here is the link: Fabspeed Headers / Exhaust / Tune and the case of the missing emissions monitors?

[PeterBleakney]

I'll add my 2 cents here. I had a Fabspeed Maxflo exhaust installed on my 2001 Boxster S. The upside is that it sounds great when hammering on from 4000 to the redline, and there seems to be more urge than before up there, but on the downside, the drone at 2000 rpm is driving me nuts and there's a noticeable dip in midrange torque. I'm wondering if it's possible to reinstall the standard muffler with the Fabspeed secondary cat delete pipes

[michaelpetersen3]

Hi BG305. Unfortunately I was not monitoring my emission before or after the tune. If you have the Fabspeed tune, they may have deactivated parts of the emission monitoring to prevent the MIL light activating.

Hi Peter. I think you could install the stock mufflers on the Fab speed cat headers, but it would surprise me if it improve your torque / horsepower at lower RPM. Attached are my dyno runs, comparing the stock car to maxflow to supercup. I did not test the configuration you were talking about which is the new headers with the stock muffler. Nevertheless you can see from the charts that in all runs the Fab speed results were better than stock across the entire rev band.

[Qingdao]

Not a flat 6, but I have these mufflers. They seem to do alright at 2k rpms. I still need to put the car on the ground and give it a good rev to know for sure.


As for quieting them down; an insertable motorcycle baffle might be the best way to give it a bit of "quiet". Thats what I'm gonna do if my V6 is too obnoxious during driving.

https://www.ebay.com/itm/2-X-4-Exhaust-Muffler-Silencer-Baffle-Insert-Motorcycle-Chopper-ATV-Db-Killer/153732248608?hash=item23cb27f420:g:~CgAAOSwJzpc0yP 3

^^^ couple of these might do it right.

[2ata]

Originally Posted by PeterBleakney

I'll add my 2 cents here. I had a Fabspeed Maxflo exhaust installed on my 2001 Boxster S. The upside is that it sounds great when hammering on from 4000 to the redline, and there seems to be more urge than before up there, but on the downside, the drone at 2000 rpm is driving me nuts and there's a noticeable dip in midrange torque. I'm wondering if it's possible to reinstall the standard muffler with the Fabspeed secondary cat delete pipes

This is interesting.

While not an exact comparison, I have the Fabspeed MaxFlo on my 3.6 996 and there is zero drone.