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Old 06-20-2011, 10:20 AM   #61
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It's on and for the price couldn't be any happier

It's not deafening with the top up and has a nice growl ,comment was made about sound discomfort at 2k-3krpm I noticed it but also realized it when I was in 3 rd gear and should've been in 2nd as the rpms were below 2k and as the car came up to speed thats when I heard the sound.

I did cat back only and plan to do air intake shortly,mine is a 2.7 2003 with 49000 miles and plan on doing 60 k service @ around 53 k and while the lid is off do the intake.

I also saw a post "eBay muffler" with a sound clip and I must say that's the exhaust I bought and mine sounds much better with no distortion,might be device used to record.


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Old 06-20-2011, 08:54 PM   #62
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Is there a break in period for these?as I drove my car throughout the day the growl got deeper
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Old 08-06-2011, 06:00 PM   #63
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Nhp

I believe mine is NHP. I did mine hole exhaust over last year. For a little over 2K. Straight headers, 200 cell cat mid-pipes and sport muffler. It does drone at highway speed in 5th gear. I moved the sensor to right before and after the mid-pipe cat. No codes. I replaced the intake with Agency Powers cold air intake. still no codes. With Dyno Scan on My laptop in the quarter mile dyno run showed 24 HP increase after intake and exhaust. I went to FABSPEED for a ECU tune the tech there showed me their exhaust. same sound.
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Old 08-07-2011, 05:41 AM   #64
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So if the stock exhaust is restrictive, and going cat-less with the headers and mid pipes is too free flowing, could you mix the two and get a great Porsche sound with just enough back pressure? or is that just wishful thinking?

Right now I have the v1 deluboz muffler with a cat-less setup using the chineese headers and well... its rowdier than a bullrun. It sounds like a racecar but just a little too crazy for putting around town.
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Old 10-10-2013, 06:31 AM   #65
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Resonance from a Dansk sport exhaust for 986

Hi all, I've just had fitted a DANSK Rear Sport silencer with twin outlet tailpipes (Part No.: 705331051) to my 2003 986 Boxster S but I do not like the resonance inside with the top up at about 2,000 - 3,000 revs. It's far too loud and is putting me off driving the car. Is there any way I can quieten it? Thanks Tone
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Old 10-10-2013, 08:45 AM   #66
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You could try this, though the fabrication may not be cheap:
Exhaust drone resonator fix - design and construction -
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Old 10-11-2013, 06:42 AM   #67
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subscribed. I am looking to beef up the sound on my stock 03 S.
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Old 09-28-2019, 10:16 AM   #68
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A more comprehensive review of Fabspeed on a 01 Boxster S

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 .


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Old 10-05-2019, 05:14 AM   #69
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Loved the video and explanation. Well done test method.

Have you considered the 987 airbox and IPD (or similar)?
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Old 11-13-2019, 07:46 AM   #70
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Quote:
Originally Posted by Elmer View Post
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/
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Old 11-13-2019, 01:50 PM   #71
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Rotofab Tune

@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
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Old 11-14-2019, 05:59 PM   #72
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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?

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