Porsche 996 Gundo hack review! Ft. before v after sound comparison

[@paulcester5348]

Definitely the best bang for your buck mod on a 996! I did the same mod on my 996 a few years ago, (1:5 inch pipe) and it still brings a smile to my face everytime I drive it. This is the way it should've sounded like from the factory. Keep up the good work Lee! 👏 Cheers from down under 👍

[@wilbertmcmaster8025]

My 996.2 C2 came with the gundo hack and a Dansk back box. Sound is low when leaving for work at 5am but accelerating through the gears entering the motorway is fabulous. It is compulsory to have the window half down when doing so! As my grandson says "You never get tired of that noise granda".

[@9WERKSTV]

You're doing it right, Wilbert!

[@logicreversed18t]

You missed out on listing one of the MAJOR issues with the Gundo hack: you will definitely drive at a higher rpm just to hear that sweet Germanic music. By far the most appealing mod I've ever done to ANY car. While tuning my turbo cars has produced more power, the sound from the Gundo hack is just perfect for the factory 315hp. Not too loud. Not trying to be anything more than it is. No pops. No bangs. It's very mature, and sounds great above 6k under an overpass!

[@BrendanG10]

Gundo here - thanks much for the terrific review. Loved the time and effort you spent. I’ve taken to track days and haven’t been red flagged. All good and thanks!

[@9WERKSTV]

Thank you for taking the time to watch! I think a lot of us owe you a thanks for your ingenuity. Great to know re: track days, which circuits have those been at?

[@BrendanG10]

@@9WERKSTV I've spent time here in CT at Lime Rock - super fun! Was trying to find one of my original videos - gotta keep digging.

[@jayringo77]

Great comparison video and thank you for the before/after visual and audio from multiple perspectives. Also appreciate the 9:11 runtime for the video - perfect.

[@TobyD]

Totally agree with your comments Lee. The 1.5 inch bypasses on my Dansk Sports sound exactly the same and best bang for buck. Lovely. Only downside as you say is track day noise limits. I had to cancel a generous 105dB track day after my personal dB tester said I was borderline and I couldn’t risk it.

[@grupofinanciero7439]

I did the Gundo hack on my 996 and it made the sound perfect. One of the best mods I’ve ever done. Sadly it seams that factory mufflers are very restrictive either way.

[@markwillis7014]

Great video Lee and great to see you with a smile back on your face where Little Irish is concerned. Welcome to the Gundo club. Had mine about 18 months now and still have the same smile I just saw on your face every time I drive it.. I can honestly say the radio has not be switched on once in 18 months, the window is always slightly ajar and the car is always kept on boil at 3 - 5,000 rpm. Such a no brainer mod & 10/10 for enjoyment factor. Hopefully catch up with you on the road somewhere soon.

[@Flat6Rebel]

Best bang for the buck! I also made this mod on my 996 the same month I got it. Getting ready to fit a GT3 center exhaust next 🤟🏼 I’ll keep you posted

[@9WERKSTV]

Good work!

[@bronrich3489]

I have this on my 99 996 c2. Love the sound! And I can startup and drive thru my neighborhood with out bothering anyone. I get lots of compliments on the sound.

[@9WERKSTV]

Glad you like it as much as I do.

[@QFXmusic]

Nice one lee my 997 has the Gundo hack and it sounds great :-)Coming from the music industry and sound recording you did a great job to capture the sound which is very difficult to do. 🙂

[@9WERKSTV]

Thank you indeed! Sound is always difficult to get right, I find.

[@QFXmusic]

@@9WERKSTV Yes it is but there is a lot you can do in post production now... I use Final cut for editing my shows and there is good sound plugins to help with noise and problems within this editor... FCX is great for multicam edit etc and if you have lots of sound then an audio editor like twisted wave. If i am scoring for film or shows i use my daw(cubase pro) for this then bring it all into FCX for the final cut. Great show lee...

[@ksteak27]

I did the same thing.... via Fister Motorsports.... TOTALLY worth it!!!

[@Pokertyme2009]

Agree with cost / results argument, am getting the Fister system on my 996 C2 within the next couple of weeks. As always, great vid.

[@hughgabriel1]

My 99 996 C2 had this gundo hack done on Cargraphic ETR (their middle noise) silencers before I bought it. I recently had TopGear equal length manifolds fitted and it has changed the noise and made it slightly higher pitched, but more characterful in the low-mid range. Before the manifold change it tested at 102dB at Brands Hatch, fine for their 105dB sessions.

[@kerrywh2001]

Thanks Lee. I'd been looking forward to this video after mention of the 'Gundo Hack' having been done in your last video. I've recently bought an early 996 and this was the first modification I wanted to make. For me, it's all about the noise, and the value for money this represents is just an added bonus. My car is now booked in :-)

[@9WERKSTV]

Very glad the video has helped you, Kerry.

[@HawkMillFarm]

What size dia pipe did you go for, not sure you said.

[@matthewhomyak1665]

The hack is awesome. Amazing sound. I opted for FD Motorsports exhaust which is quite similar to the Gundo/PSE hack on my x51 40AE paired with magna flow cats. The sound is transformative.

[@aboyandhisdog]

Gotta say, I prefer the OE exhaust sound (or lack of) the best, but that's just me! In the "original" exhaust shot of the rear of the car, your left exhaust tip has dropped quite a lot. Looks fixed in the other newer shots. Was it a bad motor mount? Thanks, Lee!

[@9WERKSTV]

That's a great spot, Tom! Yes I had a knackered engine mount, which has since been replaced.

[@sibbese3740]

Nice, totally agree about the pse / gundo hack. What would be really nice would be to get some airbox modification to get more of that intake sound too. Maybe try swap cats also ?

[@wesleycarusos8225]

I just did the muffler bypass and in my opinion it's just too loud. I don't really like the sound that much I'm wondering if this would be a nice medium between that mod and stock

[@Sto950]

Big yes for the Gundo hack! Sounds marv

[@dazsolimani2437]

Great video will be getting wrightune to do mine next time its in

[@helploveinspire2006]

My 2001 c2 came with the gundo when I purchased it. Starting the engine always sounds lovely. Getting it out of the neighborhood sometimes feels a little too loud, I try to make sure to shift quickly. But on the open road or highway it can’t be beat.

[@timbranton7950]

Mine came with switchable Dansk. Similar noise to yours on bypass. I'm a fan of induction noise - upgrading air filter can release more induction noise.

[@enriclibert545]

Thanks Lee for you chanel ever with gooooood information about porsche, 996 👍🏻👍🏻👍🏻👍🏻🇪🇸

[@9WERKSTV]

My pleasure!

[@yammy1000]

Reminds me of how good my 996 sounded. I miss it!

[@BarnesysBuilds]

Definitely a great mod, roars when you want and is compliant when your on the hwy. I have listened to all of the muffler notes and keep coming back to the Gundo note. Maybe a sports Cat Gundo combo would be the next phase of sound from here.

[@mateszlanka2511]

Epic 9:11 length of a video! 😃👏

[@johnash826]

Good mod. However it depends on the state of the existing silencers, to determine how long they will last before replacement is necessary.

[@nigel.w]

Good that it doesn't drone, and also, IMO, that it doesn't pop and bang, which I think gets annoying fast. Sounds good. However, for my tastes, it adds too much bass. Again, for my tastes, I thought the Dansk mufflers had the the right tone; probably a bit too quiet to hear in the cabin, so finding a way to amplify that sound would be for me. Maybe the bass/treble factor comes down to the size of the pipe used for the Gundo hack? Still, I'd probably be afraid to ruin the Dansk sound. Out of the various exhaust systems, I tend to be drawn to the Top Gear system.

[@Henders72]

Sounds superb Lee👌

[@shahzadchoudhry7399]

Will it effect emissions ?

[@stevemyers2092]

I had 2 993's, a 95 C2 and at another location I had a 96 C4S - i had both of their mufflers cut open - holes punched in the baffles and tig welded backup...looked like they weren't touched but had a deeper throaty (light V8) rumble... loved them. Wonder if it would make a difference 997 or 993 I don't see why it wouldn't be the same...just mufflers.

[@peanutbutterpadre1519]

a lot of people can't get over the 996 head lights I personally don't mind them. the thing that keeps me away is the interior design, a lot of it is the dash & buttons. Recaro sportster cs are expensive but I think they would go along way especially if they had Porsche style fabric upholstery

[@picklemetimbers3003]

I have been debating this for a while now. I'm worried that having it not fully stock will hurt the resale.

[@TheAmishSasquatch]

In the first start up clip, of the gundo hack; I noticed your car has the same weird rattle or noise from the left side, as my car does. Any ideas what it is? Did this occur after the Gundo, or was it present before? Thanks

[@benbomcars]

Probably loose chain tensioners causing rattle - my 996 has the same thing! Tensioners are oil fed and don't always hold their tension when the car is off for an extended time. Once they fill with oil again after starting the car the sound should always go away. If not, probably another issue.

[@Carrera-gp9od]

I think that sounds great , not too loud . My wife has just bought a 987 boxster gen 2 , I’m looking for a local exhaust place to do a similar mod to the exhaust . It’s way too quiet , even with the roof down .

[@AR2Rcayman]

You can't do the Gundo hack to 987.2 exhaust due to design difference. Carnewal GT mod is the way to go. I had it done to 987.1 S and now have it done to my 987.2 base. It's a great sound!

[@Carrera-gp9od]

@@AR2Rcayman Ah , that’s where they open the boxes and alter the inards? I had thought about that , it seems a lot of hastle sending them off to Belgium . I have heard them on KZbin, they do sound good though Maybe just have to bite the bullet and go for it 👍🏻

[@9WERKSTV]

Thanks for clarifying this with the 987.2, hopefully for the benefit of others.

[@duncanbennett8539]

I’d do this but I want to keep my track day options open. Sounds great by the way.

[@9WERKSTV]

Yes it appears the only drawback.

[@rynomite_]

Wow, it was three years ago that you put the Dansk mufflers on? Seems like it wasn't that long ago.

[@9WERKSTV]

Yes, time has flown!

[@steveallen3335]

Interesting comment on the sound of the sports car being a key ownership component. I do wonder what the increasing number of EV converts will really think when they own an EV if they switch from having owned a flat 6 n/a. Great video and car sounds great!

[@trackdaylbs]

Not always sure more noise is better. As stated, could put a question mark on track days, it can really pi55 people off when driving in quieter areas, and it can bring unnecessary attention from the police. Also, it can drop power, not increase it.

[@mikenorthern1024]

Sounds fantastic!

[@johnnavarro3188]

That's perfect! Definitely the way forward, it's just so Norty! 🍳🦆😉

[@garyhaddock7264]

Sounds great!

[@nova-oy4qy]

I thought gundo hack was to remove the capped off PSE outlet plugs and then merge weld a new pipe from the PSE outlet into the single outlet pipe. This looks like the Fister mod to me. kzbin.info/www/bejne/e3SYgJ-jh5xpqLM and kzbin.info/www/bejne/hYeclYyJoJWCfJY

[@8hoffa]

Is the gundo hack legal?

[@Jacksonhabib1000]

A great video Lee, thanks. I'm wondering what the difference is between performing this upgrade on the exhaust versus some sort of induction modification. Has anyone done either on an X51 set up? I'm in two minds whether to do anything like this to my 40th anniversary.

[@9WERKSTV]

Thanks for the kind words. The Gundo hack is all about sound for me, I'm not sure on any performance stats. The right induction mod will give a small improvement in performance.

[@Jacksonhabib1000]

@@9WERKSTV Thanks Lee. I appreciate the effort you put in. I’m just thinking about the soundtrack. If you look at 4:46 in the vid below , you’ll see what I mean. kzbin.info/www/bejne/aqmQhq2EeNyeaMk Even the “mythbuster” type vids that “prove” that the induction kits (e.g. K&N) reduce power, state that the soundtrack is improved. I’ve never seen anyone compare the induction soundtrack improvements versus the exhaust soundtrack improvements. And I’m guessing the induction sound improvement will carry less risk for track days as it’s more in the cabin than external? I have no direct experience in either and so am guessing.

[@daggidding4478]

Hi Lee, maybe you already know, but Jay Read did a comparison of aftermarket exhausts for his 996. Check out his video

[@johnrb9397]

Drone?

[@DarkMarkMedia]

Exhaust electric valve between the pipe? Best of both worlds

[@9WERKSTV]

Great idea!

[@BluCat86]

Anyone have any recommendations for someone to do this in Hants or Surrey?

[@JohnKaufmann]

Happy boy right here!!!!

[@marcosunt1206]

Beautiful, which green color is the car? Original porsche color?

[@9WERKSTV]

It's Irish green, feel free to take a look at my back catalogue where I document the paint quite substantially.

[@hellviper944]

Just put the v8 style electriconic cut outs in the tube so you can shut it off or open it up

[@9WERKSTV]

Great idea!

[@Porsche9174Ever]

Told you so ;)

[@ghostriderpa31]

Anyone done the hack on just 1 side?

[@melgendemaisonvlog3428]

Thanks a lot for sharing ❤️❤️❤️❤️🔔🔔🔔

[@JamesThomas-wf9sl]

got to be honest gundo on a dansk sounds better than gundo on a stock silencer. thats a proper win!

[@randominternetuser2888]

Good luck passing vehicle emissions (MOT?) next registration.

[@MrBatwa]

How much £ did the hack cost 💲

[@9WERKSTV]

A few hundred, that's it!

[@richardwilson57]

It’s good but I still think the CARNEWAL system is better, similar price, better sound (only loud at high revs) and bhp upgrades ……. Just lets the car breath better

[@robp2728]

I hadn’t yet called my 996 a “classic.” Ouch….haha

[@DonziGT230]

Too much emphasis was put on it being irreversible and un-switchable. Reversing it wouldn't be much work at all, possibly less than the hack. Installing a simple butterfly valve in the pipe would make it switchable.

[@epson552]

Model3 had the best Timing 😂

[@9WERKSTV]

hahahaha!

[@Mckorzi]

IMHO there is no better sound then the original PSE. No Gundo or Dansk will come close. After all it’s original and with the money spend on dansk and gundo mods, it’s not that more expensive anymore. As usual, you get what you pay for😉

[@madfemurfast]

I think I like the original better 😱

[@9WERKSTV]

Shock and horror!

[@madfemurfast]

@@9WERKSTV 😂😂😂😂 Poor Little Irish! Thanks for the film!

[@t.kausch419]

..well done, but not for Germany (for shure to lound). The police is espacialy wathing the sports cars the last two/three years.

[@mattonthewater]

This is a fister mod, not a gundo hack

[@grahamirish3315]

Really enjoy your videos Lee they are informative and useful in giving an insight into the brand. I have a 996.2 cab...which is standard spec and I am very happy with it. Chris at Wrightune takes care of it. I follow you on Instagram ( which I really don't get on with....nightmare to navigate). I'd be interested to know if any other 996 owners are quite happy with their car in standard spec? For me, the badge and its heritage is its gravitas. Even folk who are not into cars will know what it is because of its iconic status. Personally I don't think it needs anything else to enhance it...but of course mine may be a minority view? We all probably had hot hatches back in the day and would mod them to sound more awesome than they actually were...ohh the follys of youth ? :) So I'd be curious to know from other followers who may share my view. Many thanks Lee....Best regards Graham Le Fevre

[@9WERKSTV]

Thanks for your kind comments Graham! There's absolutely nothing wrong with a stock 996, I have just always had a propensity to modify my cars, plus I like exploring new things on my 996 as it seems to be of interest for others and makes for a good excuse to create some new videos. Hopefully others can pitch in on their experiences with these cars!