DIY Exhaust Mod – Gain of 10+ HP!!! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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DIY Exhaust Mod – Gain of 10+ HP!!!

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crios DIY Exhaust Mod – Gain of 10+... 03-02-2009, 11:41 AM

blueillusion97 I have done PSE mod on mine,... 03-02-2009, 05:10 PM

RandallNeighbour Now this is a great little... 03-02-2009, 05:44 PM

crios 30 min if that!! I'm wanting... 03-02-2009, 07:02 PM

wanna986 :cool: :cheers: 03-02-2009, 07:40 PM

crios Hi all, Below are some more... 03-03-2009, 10:08 AM

mikefocke How did you prove it added HP? 03-03-2009, 10:45 AM

crios Mike, I promise not to rev... 03-03-2009, 11:00 AM

clb0099 sh*t i like this idea.. now... 03-03-2009, 11:58 AM

tommy986 I think this exhaust tip... 03-03-2009, 12:25 PM

crios That's correct. I think the... 03-03-2009, 01:36 PM

23109VC we need to get someone with a... 03-03-2009, 03:23 PM

clb0099 So i have to get the tip... 03-03-2009, 04:24 PM

sd_boxster Started this last night,... 03-03-2009, 07:04 PM

clb0099 are you sure that is true... 03-03-2009, 07:39 PM

crios Yours are welded on, you need... 03-03-2009, 07:48 PM

crios 1.5 inches, wow! You have to... 03-03-2009, 07:58 PM

sd_boxster Video clip... 03-04-2009, 10:02 PM

clb0099 sounds awesome.. i got to do... 03-04-2009, 10:21 PM

sd_boxster I propose that Crios gets to... 03-05-2009, 07:34 PM

RandallNeighbour CDM Crios Drillout Method ... 03-06-2009, 10:01 AM

crios LOL, I guess I better start... 03-06-2009, 03:41 PM

23109VC last night i had a chance to... 03-08-2009, 11:59 AM

clb0099 I am in the same problem as... 03-08-2009, 12:37 PM

spine911 Just wondering if there are... 03-08-2009, 02:15 PM

23109VC i'd be suprised if two little... 03-08-2009, 04:12 PM

23109VC clb0099- i am in the same... 03-08-2009, 05:27 PM

sd_boxster Do it! That's what I did. :D... 03-08-2009, 05:52 PM

clb0099 what kind of headers?.. the... 03-08-2009, 06:38 PM

sd_boxster I picked up the MaxSpeed... 03-08-2009, 08:25 PM

clb0099 do u have a clip of how they... 03-08-2009, 08:33 PM

23109VC I'm impressed - you installed... 03-08-2009, 08:52 PM

crios Without a Dyno, it would be... 03-08-2009, 09:12 PM

George in Plano Drilling straight back with... 03-09-2009, 10:53 AM

clb0099 I have opted to do the pedro... 03-09-2009, 05:32 PM

23109VC I did the Pedro exhaust to my... 04-01-2009, 07:11 PM

tamarsha I was just about to do the... 04-02-2009, 04:30 AM

spyder803 Any difference in doing this... 04-04-2009, 04:30 PM

NWI Bill crios, the links aren't... 04-04-2009, 07:09 PM

crios All links have been update... 04-04-2009, 08:18 PM

tamarsha I did the 4-hole mod on my... 04-05-2009, 01:47 PM

MidMotor2TrunkToter Drill Baby Drill!!!!!!! 04-06-2009, 01:48 PM

MidMotor2TrunkToter Calling all the brave among... 04-06-2009, 02:01 PM

tonkasdog Just drilled the mother -... 04-13-2009, 05:59 AM

cWadeb How To Question 04-13-2009, 08:29 PM

tonkasdog Hi, I had the same problem, I... 04-13-2009, 11:17 PM

blue2000s You will want to use a center... 04-14-2009, 06:58 AM

crios Center punch as suggested by... 04-14-2009, 03:24 PM

MidMotor2TrunkToter No Takers? 04-15-2009, 05:04 PM

Mike_Yi I'd bet that you are seeing... 04-23-2009, 11:10 AM

23109VC i have a pedro mod on my car... 04-23-2009, 03:02 PM

2000PorscheBoxster PICTURES what's going on... 06-26-2009, 04:04 PM

2000PorscheBoxster nobody can chime in on this... 07-03-2009, 12:23 PM

Christian H Although the holes that you... 07-04-2009, 12:11 PM

joseph_number1 Emmissions issue? 07-13-2009, 06:08 PM

blue2000s The addition of holes in the... 07-13-2009, 06:13 PM

JFP in PA And some states do have... 07-14-2009, 05:49 AM

crios I just smog’d my car in CA... 07-29-2009, 04:07 PM

More replies below current depth...

truegearhead Has anyone actually done this... 06-19-2012, 07:23 AM

hartids This sounds like an awesome... 06-22-2012, 07:50 AM

Spinnaker 2000 S with welded tips, see... 06-22-2012, 10:06 PM

More replies below current depth...

crios Just as easy, Voxster from... 04-04-2009, 08:07 PM

TimAustinW Are you running OEM Headers... 03-17-2009, 10:59 AM

MN 986 I did the crios mod on my 02... 05-26-2009, 08:26 AM

GT_YellowJacket Side-by-side comparison 06-22-2009, 10:38 PM

tamarsha I tried the mod with a 1/2"... 04-01-2009, 01:13 PM

crios I'm glad you like!!!! Add... 04-01-2009, 04:08 PM

2000PorscheBoxster Can someone please confirm... 06-24-2009, 11:52 AM

2000PorscheBoxster okay okay, i drilled THREE... 06-24-2009, 06:53 PM

2000PorscheBoxster bueller buelller bueller! ... 06-26-2009, 09:42 AM

Christian H Hi Fella! Sorry your... 06-26-2009, 11:39 AM

EZ2CY OK champ.. sorry to get here... 01-27-2015, 07:14 PM

Dzl210 Here's my sound check. ... 02-01-2015, 10:11 AM

nola911 Nice work guys. Just did... 04-02-2011, 06:06 PM

davey On the early welded single... 10-18-2010, 02:09 AM

tamarsha Sounds logical to me. The... 10-18-2010, 02:22 AM

wanna986 So, no drone with the 1/2"... 03-03-2009, 07:38 PM

crios None at 1/2 inch, don't know... 03-03-2009, 07:49 PM

mdimant Box-s Muffler drill out. 02-24-2010, 09:08 PM

bigborian I was thinking about this too... 07-20-2009, 01:11 PM

2000PorscheBoxster if christain H is right below... 07-28-2009, 07:28 AM

HDManny Great idea 08-13-2009, 06:42 PM

crios Since it's a dual pipe, you... 08-13-2009, 10:35 PM

HDManny I though that I read an... 08-14-2009, 07:37 PM

msediqi noob question 09-24-2009, 11:32 AM

fishfood Mod works on 00 non S Boxster 09-24-2009, 02:00 PM

MylesHye Clothing I did this tonight and it... 11-24-2009, 05:04 PM

Jamesleeworks Crios That is pretty cool,... 12-14-2009, 08:26 AM

jhandy did the drills, love it, and... 12-31-2009, 11:07 PM

HDManny I drilled two holes (one per... 01-01-2010, 09:42 PM

MN 986 What are the biggest holes so... 01-12-2010, 12:26 PM

More replies below current depth...

tuneme Do you guys think you could... 04-25-2010, 03:05 PM

tamarsha I have an 03 S with a BNC... 04-25-2010, 05:23 PM

tuneme Ok got a drill and did it,... 04-26-2010, 03:53 AM

tuneme im even considering drilling... 04-26-2010, 09:24 AM

More replies below current depth...

Seal Gray S I know this is a dead thread,... 01-16-2012, 07:50 PM

Renorush I know this is an older... 03-06-2012, 09:49 PM

fredpayne This looked like a great MOD,... 03-12-2012, 08:56 PM

Eric G OK, after reading all the... 05-07-2012, 05:18 PM

JAAY You lost a second because of... 05-07-2012, 08:08 PM

Eric G Your post makes me laugh! ... 05-07-2012, 08:39 PM

gilmanco Why ghetto up your car just... 05-08-2012, 12:50 AM

fredpayne I did, after I lost my drill... 05-08-2012, 05:12 AM

MN 986 I know how you feel. I almost... 05-08-2012, 05:50 AM

More replies below current depth...

Crono0001 Well, after driving around... 06-07-2012, 03:40 PM

Crono0001 Sorry for reviving this up,... 05-25-2012, 06:45 PM

MethosSVT Hi everyone, I have a few... 06-07-2012, 02:35 PM

Michiganstar 3yr old thread resurrection!!... 12-13-2012, 07:02 AM

Homeboy981 Cat Back System is a better... 12-13-2012, 07:51 AM

Michiganstar I will no doubt go for a cat... 12-13-2012, 08:10 AM

mangoman What about the MOT emissions... 03-11-2013, 02:43 AM

sub5kvm Hi Michiganstar My Boxster... 05-17-2013, 06:12 AM

smygolf I have a question regarding... 05-21-2013, 03:08 AM

germaneighter Did the crios muffler mod to... 05-27-2013, 08:25 PM

valiantechoes Another happy camper! Thanks... 09-20-2013, 05:39 AM

CrashTest I know this is an older... 11-01-2013, 09:56 AM

More replies below current depth...

chipmunk 1 inch is quite a big hole. ... 01-12-2014, 08:00 AM

particlewave Slate - I put this off for... 01-18-2014, 03:33 PM

JAAY 1" sounds glorious. No drone... 01-18-2014, 03:57 PM

chipmunk OK - here is the sound of the... 01-19-2014, 12:23 PM

jb92563 Based on the great results I... 01-19-2014, 04:33 PM

silver-S chipmunk, looks like your AOS... 01-20-2014, 09:30 AM

chipmunk :) That's steam - it was less... 01-20-2014, 10:36 AM

JAAY Here ya go 1" holes. The... 01-20-2014, 12:31 PM

chipmunk That sounds pretty good - I... 01-20-2014, 12:39 PM

JAAY Yea, you hear it, but no... 01-20-2014, 12:43 PM

Benjamin I'm a little confused as to... 01-22-2014, 07:10 AM

chipmunk I see no reason why you can't... 01-23-2014, 01:54 AM

EssexPorsche Guys, I'm sure it sounds... 01-23-2014, 04:56 AM

particlewave That's essentially correct.... 01-23-2014, 06:19 AM

particlewave This one is a bit clearer :)... 01-23-2014, 06:25 AM

chipmunk I did look when my box was... 01-23-2014, 07:16 AM

particlewave The arrow diagram posted... 01-23-2014, 10:00 AM

nieuwhzn So what would happen if the... 01-23-2014, 09:35 PM

chipmunk In the extreme, opening up... 01-24-2014, 09:09 AM

EssexPorsche I would have thought it was... 01-24-2014, 10:59 AM

particlewave Here you can see the center... 01-23-2014, 10:05 AM

Ian c I'll try to dig out a photo I... 05-20-2014, 11:28 AM

chipmunk I have a 2003 so definitely... 05-20-2014, 11:50 AM

Ian c I thinki Drilled mine as well... 05-20-2014, 11:56 AM

More replies below current depth...

particlewave And after drilling... 01-23-2014, 10:11 AM

chipmunk That makes sense. Nice... 01-23-2014, 10:18 AM

JAAY Let me know if your able to... 01-23-2014, 11:45 AM

Slate 01 I may have missed it, but I... 01-23-2014, 03:51 PM

particlewave Not sure, but it worked on my... 01-23-2014, 05:16 PM

Slate 01 PartWave and everyone else, ... 01-23-2014, 05:26 PM

particlewave I followed the instructions... 01-23-2014, 05:42 PM

tommy583 I did it. 98 base. 1/2 inch... 01-23-2014, 06:14 PM

Slate 01 Thanks guys, I know what I'll... 01-23-2014, 06:23 PM

particlewave One tip: I had a heck of a... 01-23-2014, 07:05 PM

Slate 01 So how long does the drill... 01-24-2014, 05:41 AM

particlewave Just break through the pipe,... 01-24-2014, 05:52 AM

Slate 01 Thank you very much, I... 01-24-2014, 06:18 AM

particlewave This is just speculation... 01-24-2014, 11:51 AM

Slate 01 Son of a Bee-atch, I have a... 01-24-2014, 12:18 PM

tommy583 Start the hole with a long... 01-24-2014, 12:30 PM

particlewave Same here...I used the... 01-24-2014, 12:34 PM

Slate 01 I'll give it a go, but not... 01-24-2014, 01:36 PM

particlewave I went on an upward angle and... 01-24-2014, 01:59 PM

chipmunk Last stage of the test... 01-25-2014, 02:42 PM

jdlmodelt Excellent comparisons. I... 02-02-2014, 05:59 AM

chipmunk No, the volume is fine - not... 02-02-2014, 08:35 AM

edc Great comparison video... 01-25-2014, 03:34 PM

JAAY Now someone needs to get the... 01-25-2014, 04:32 PM

jdlmodelt I just drilled 3/8 holes in... 02-01-2014, 12:43 PM

chipmunk 3/8 will be fairly quiet,... 02-01-2014, 04:20 PM

chipmunk I took my car down the... 01-26-2014, 01:15 AM

chipmunk Update on my last post. I... 01-28-2014, 12:10 PM

JAAY Really? Drone? What other... 01-28-2014, 12:47 PM

chipmunk :) well - I'm certainly not... 01-28-2014, 01:08 PM

particlewave That's too bad, but at least... 01-28-2014, 01:52 PM

JAAY I have 1" holes. You hear... 01-28-2014, 04:28 PM

Slate 01 Okay you have all convinced... 01-28-2014, 05:03 PM

chipmunk It's always difficult with... 01-29-2014, 10:45 AM

JAAY The automatic would... 01-29-2014, 10:48 AM

chipmunk Changing the manifolds does... 01-29-2014, 10:53 AM

More replies below current depth...

Slate 01 JDLMODELT, comments like... 02-01-2014, 04:23 PM

chipmunk My observations in all of... 02-02-2014, 12:22 AM

Niche So based on this thread I... 05-07-2014, 04:52 AM

chipmunk How big did you go? 05-08-2014, 08:39 PM

holtzy822 ill just leave this here... 06-27-2014, 10:03 PM

TeamOxford You can always tune your... 06-28-2014, 02:23 AM

fab986 Haven't laughed that hard in... 06-28-2014, 03:12 PM

JayG as long as you are not... 06-28-2014, 06:16 AM

Niche I did it, sounds better, but... 09-14-2014, 01:53 PM

Niche Sounds better, but slight... 09-14-2014, 01:54 PM

Violinman Hayward & Scott exhaust... 09-22-2014, 04:57 AM

SKOOSH1970 Carried out this mod... 10-26-2014, 01:52 AM

Giller You're pleased you made your... 10-26-2014, 05:10 AM

More replies below current depth...

particlewave This is a great mod. Sounds... 10-26-2014, 09:45 AM

silver-S I finally got out the... 11-07-2014, 09:20 PM

benstaples Box muffler reconstruction 11-09-2014, 11:58 AM

tommy583 I have drilled a one inch... 11-09-2014, 04:36 PM

Specwar I drilled used a .50 bit and... 11-29-2014, 08:47 AM

Dzl210 Only difference I notice is... 01-21-2015, 01:53 PM

silver-S Dzl210, that sounds good --... 02-01-2015, 01:01 PM

KRAM36 I did this to my car today,... 02-10-2015, 04:34 PM

tommy583 Wow that must have been a... 02-10-2015, 04:49 PM

KRAM36 Wanted to make sure I got far... 02-10-2015, 05:37 PM

tommy583 How long is it? I used a... 02-10-2015, 08:05 PM

Nine8Six Just borrow your wife's 45... 02-10-2015, 08:08 PM

KRAM36 Yep, I sure did. I was... 02-10-2015, 10:43 PM

sjbox The tip on my '02 non-S... 03-01-2015, 10:58 PM

KRAM36 Muscle, you have to use... 03-02-2015, 12:37 PM

01BOXYS I just want to clarify that... 09-03-2015, 08:36 AM

chipmunk Just drill through the pipe -... 09-03-2015, 08:53 AM

01BOXYS Great thank you for quick... 09-03-2015, 09:12 AM

antny I did not feel like buying a... 03-02-2015, 12:36 AM

silver-S Can you turn the screwdriver... 03-02-2015, 11:57 AM

chipmunk Have a look on this thread... 09-03-2015, 09:40 AM

aowolf I did this ~5 years ago on my... 11-28-2015, 12:45 PM

10/10ths For the 3.2 S engine folks... 05-29-2016, 10:35 AM

BoxsterSteve An S owner chiming in... 05-29-2016, 04:08 PM

silver-S I drilled 10mm (3/8") holes... 05-29-2016, 11:14 AM

njbray I have 2x 3/4" holes and they... 05-29-2016, 11:51 AM

TypeA Did this mod today. My 02... 05-30-2016, 11:05 AM

DWBOX2000 Just wondering now that some... 06-27-2016, 05:19 AM

silver-S Yep, still happy with 3/8"... 07-20-2016, 01:52 PM

jintwert better idea 01-01-2017, 06:16 PM

fridsten I'm considering opening up my... 06-27-2016, 06:00 AM

Ben006 It's a common mod that I've... 12-11-2016, 08:29 AM

More Thread needs more pics for us... 12-20-2016, 01:31 AM

professorman How long does the drill bit... 10-22-2016, 04:09 PM

BoxsterSteve Check the first post... it... 10-22-2016, 04:37 PM

silver-S I used 24-inch (60cm) drills.... 10-22-2016, 08:41 PM

tommy583 https://www.youtube.com/watch?... 11-01-2016, 07:23 AM

particlewave Ha! That's funny :) I did... 12-09-2016, 12:36 PM

geetee 2ndary cat delete and 2x 1... 11-30-2016, 06:06 PM

particlewave Or maybe all of the pictures... 12-09-2016, 05:37 PM

heymanwatchthis Crios + PSE = ? 12-10-2016, 03:23 PM

tommy583 I sold a crios modded muffler... 12-10-2016, 07:27 PM

geetee I'm finally happy with sec.... 12-10-2016, 04:50 PM

particlewave I'm going to go right through... 12-10-2016, 04:54 PM

The Radium King i wonder if you could go in... 12-20-2016, 03:50 AM

particlewave I'm not completely convinced... 12-20-2016, 04:58 AM

More Any 98ers on here that have... 12-20-2016, 05:02 PM

particlewave Internal muffler bypass that... 01-03-2017, 02:05 AM

fridsten Excellent! :) 01-03-2017, 02:07 AM

particlewave It's "voilà", lol... 01-01-2017, 06:30 PM

jintwert No, you are mis understanding... 01-01-2017, 07:09 PM

jintwert Why would you pay 200 just... 01-01-2017, 07:16 PM

particlewave Plenty do it and are more... 01-01-2017, 07:22 PM

jintwert Its only money...LOL. Have... 01-01-2017, 07:29 PM

particlewave No, the Brinks trucks drive... 01-01-2017, 07:33 PM

jintwert OK :cheers: 01-01-2017, 07:40 PM

geraintthomas Apologies if this has been... 01-03-2017, 02:19 AM

particlewave Ger: performance gain was... 01-03-2017, 02:26 AM

geraintthomas Ah! Aye I was aware of the... 01-03-2017, 02:40 AM

Jgkram Muffler mod 01-04-2017, 02:26 PM

particlewave The Universe hates me. :) It... 01-04-2017, 03:01 PM

Jgkram Holy cow... 01-05-2017, 04:01 AM

particlewave Thanks for the concern. :) ... 01-05-2017, 02:09 PM

particlewave The internal bypass sounds... 01-07-2017, 12:38 PM

Boxtaboy Neat trick you did there. I... 01-13-2017, 06:07 AM

particlewave Update: I've driven the car a... 01-12-2017, 03:56 PM

Jgkram Muffler Mod 01-13-2017, 04:38 AM

particlewave Sorry, poor wording. :) Yes,... 01-13-2017, 08:04 AM

professorman I finally did this mod on my... 01-24-2017, 09:46 PM

Nine8Six If I were you I'd just call... 01-24-2017, 10:10 PM

mgfranz Got her number? She can... 05-16-2019, 02:50 PM

maytag Dood, that's my sister..... ... 05-16-2019, 03:54 PM

mgfranz I'll have here home before... 05-16-2019, 03:56 PM

Slate 01 She's a mid-western 10 and a... 05-17-2019, 03:55 PM

mgfranz If your under 40, yes, a Cali... 05-17-2019, 04:05 PM

particlewave What a coincidence! Your... 05-22-2019, 10:20 AM

namooz Hey, new to this forum. Nice... 02-19-2017, 07:36 PM

thefunkygibbon Sorry for the thread... 05-10-2019, 01:55 PM

particlewave You're looking at the wrong... 05-22-2019, 10:22 AM

thefunkygibbon considering doing this, but... 05-22-2019, 02:29 AM

thefunkygibbon ugh, just tried to take the... 05-22-2019, 04:52 AM

ThreeSheds Another Crios convert... ... 08-27-2019, 09:58 AM

M9G Hi, my exhaust tip is one... 09-19-2019, 07:58 AM

tommy583 Yes if you look inside the... 09-19-2019, 10:41 AM

M9G Ok yeah, so am I drilling on... 09-19-2019, 12:15 PM

More replies below current depth...

particlewave The internal bypass sounds... 09-19-2019, 11:45 AM

particlewave On an upward angle and a... 09-20-2019, 07:43 AM

M9G All done and de-snorkeled :-)... 09-20-2019, 07:45 AM

particlewave Yep ;) ..... 09-20-2019, 08:42 AM

M9G sweeeeeet :-) thanks for your... 09-20-2019, 11:58 AM

bigfy39 +1 satisfied DIYer. Did this... 12-13-2019, 02:43 PM

DPhantom679 After reading many of the... 08-29-2020, 08:29 PM

Farmlifer So does anyone has a... 01-07-2021, 07:19 AM

Stroked & Blown See DPhantom's post just... 01-07-2021, 10:33 AM

tommy583 +986 :) +986 01-07-2021, 02:50 PM

Farmlifer Thank you much, have the... 01-08-2021, 06:05 AM

07-03-2009, 12:23 PM	#11
2000PorscheBoxster Registered User Join Date: May 2009 Location: Long Beach, CA Posts: 14	nobody can chime in on this one?

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