Exhaust Bypass Mod in West London - Anyone?

Hi guys, just wanted to know if anyone can recommend a place to have the bypass mod done in west London near heathrow/hounslow. Just wanted to know if there was anything local before I consider Hayward and Scott in Essex. Thanks Roy

Anyone used style dynamics or top gear in Hayes middx?

Plenty of Welders in London.

Yes, I can tell from the sheer amount of reponses I've had [ ]

Morning all, going to get my bypass mod done today from an exhaust company in Hayes middx called styledynamix. A bit excited like a kid going to buy a new bike. Will take photos and try and post later. Thx Roy Ps. I've read a lot about nuts and bolts breaking etc, if anyone is able to send me the part numbers of the nuts, bolts or brackets that I may need, that would be very helpful. Many thx!

Hello, glad you got it sorted. I just used the old clamps and put better stainless nuts and bolts through. http://www.type911shop.co.uk/shop/article_451/996-Exhaust-Clamp.html?shop_param=cid%3D486%26aid%3D451%26 http://www.type911shop.co.uk/shop/article_5355/996-Exhaust-Clamping-Sleeve.html?shop_param=cid%3D486%26aid%3D5355%26

As you should be, it is a very childish thing to do. EXCELLENT!!!!!! [ ]

I LOVE IT!!!!!!!!!!!! Sounds abit more grown up on tick over! Went for the 1 inch tube as I wanted it just abit more throatier! They did a great job, I had an existing bypass tube done by a previous owner but was approx 1.5 cm in radius. Took lots of photos but not sure how to post them...will ask Richard for advice. All in all it took 3 hours to do. Good job on the tig welding and also in the taking off and putting back on! Really pleased and only £200 all in. Thanks Roy

Hi All, Here goes, wanted to post yesterdays events getting my bypass mod done!! When I got my 996 C4S approx 6 months ago, I thought to myself "Roy.................... be sensible...it's a nice car, just drive it, enjoy it..Porsche make some nice cars so things on it will be more than enough for you". Well a week onto the forums and I had had my wishlist started, proper geo setup from CG, a couple of check-ups from indies to make sure I hadn't bought a lemon and a few visits back to Cridfords to get stuff sorted that they seemed to mess up along the way (all resolved though thanks to Jeff). Top of the list though was a more sporty note from the exhausts. I was told that the car had a sports exhaust....stay with me and I'll show you how sporty it was! Had the usual pain that those who don't buy from an OPC experience....The dreaded "Do I buy an aftermarket warranty, and ifso, where do I get it from??, i wish Hartech were in London type of woes" Anyway, after trying to do a fair bit of research on the bypass mod and reading GT4's superb posts on 911uk, I decied to go with the 1" bypass but didt fancy doing the 50 odd miles to get to H&S in Essex...There had to be somewhere closer that could do a a good exhaust mod given that I live in Hounslow, the land of mark1 VW GTi mods!! Anyway, after a couple of months of research, still no joy! A quick chat with a guy in Kwik Fit suggested I try a place called Styledynamix in Hayes, approx 3 miles away from me... So I did!! Also spoke to Sid from RSJ who said that he knew them so that instilled me with some confidence! I spoke to Arif who's the mgr, went to visit them with thread links and photos in hand of what I wanted doing and we agreed that I would turn up on Thurs at approx mid day! I got there at 12 o'clock a bit confused about what diameter to go for but a quick chat with our resident guru Mr Hamilton reassured me that 1" was what I needed, a bit louder but nothing head turning...abit too old and ugly for that whole stuff! Immediately, Arif explained to Craig and Aslam what needed doing and they were away with WD40 in hand. Once the boxes were off which took about 30 mins (that was lucky as all brackets and nuts were new) I saw my Sports box, the bypass was what can only be be described as a couple of straw-like diameter pipes that probably had no effect at all. Old bypass mods were duly removed by the guys and new ones put in place before the TIG welding took place... They said it was harder to remove and re-attach as the weld wasn't holding as well as they'd like ............and hence their not so entirely happy clean job! But it looked OK to me. Car getting put back together and they straightening the tailpipes as originally they were not sitting right! All in all, it took the best part of 3 hours, they took their time and were nice and gentle with the car!! Craig, Aslam and Arif did well . Highly recommened and fairly well priced. They used good grade stainless steel and are longlife agents which I'm told is good. Sounds so much better than before!! Roy

Wow, Who bothered putting the pencil sized bypass pipes in beforehand LOL. I doubt an SPL meter could have heard the difference. At least your sorted now!.

Hi, Iwas thinking of the same mod, phoned H&S and was quoted £400, but for Turbo so a bit more work involved i was told, so yours was a good deal! H&S suggested a 1.5" tube. Have you got a video for listening pleasure anywhere posted, would love to hear new sound

I'm very happy with the sound but I could have possibly gone for 1.25" bypass. Afraid I didn't do a before and after sound. Not even sure I would know how to do it

Hey Roy, Glad you got the mod done. You have been looking into it for a while. You Big Kid !!!!!! [ ] Enjoy!!

I'm still fairly new to all this, how do these work with MOT etc?

I had absolutely no problem with MOT's on mine. It is only bypassing the silencer - not the cats.

Bump for Meng

Can you do this mod on a stock 2001 996 C2? I have always thought the standard exhaust sounds a little 'timid' and nowhere near as nice as the sound my 993 makes!

Yes you can. The principle is the same. My friend did the mod on his Boxster. Worked a treat

Went to style dynamix thanks to rohit good price £199 the sound now I am more happy about selling my sports bike proper growler

Bump

Not bad, but I have seen better versions of the 'Pedro' or 'Gundo' exhaust bypass mod. btw I know both of these guys from my time in USA.

Hi Nick, do you mean better workmanship or something else? If so, any places that you can recommend that are local to west london? What two guys are you referring to ? I think I may be having a dumb moment today... Thanks

I think probably method & workmanship.

The guys are friends of mine in USA. It looks something like this although this photo is the 997 version: Uses a wider bore cross pipe. Here is one from a 996:

It can also be done from the top same as oem PSE, But supposedly not as good on pre 2002 cans.

The sport exhaust is much the same as the photo above although it has a valve in the pipe. The valve operates on switching it on. However it also has a speed dependent cut-out for 'town' driving. Some disconnect the switch control and wire the valve to be permanently loud.

Like Me!!![ ]

How am I not surprised that you wanted to be noisy all the time [ ]

However, Unlike me, the switch still operates to make it quiet![ ]

These are the two types of genuine PSE. The old one (originally for the 3.4 engines) gives a 1" bypass between inlet and outlet pipes. This is the type of bypass Roy has (and that I had). The newer one (introduced with the 3.6 engine, but suitable for both) has a much larger bypass which bypasses only half the silencer. Richard's photo (post #25) shows the fixed equivalent.

Hi Dave, With mine, I know that my Indy disconnected the speed dependant wire from behind the fuse box I think. If you want it loud all the time, some people have disconnected the vacuum hose that operates the flaps.

Don't forget to plug the disconnected pipe.

Its over @Rentech

Does anyone know of a company in the uk that does this same as oem pse conversion on 2004 boxes .

Really like the look of the conversation on post 25 if anyone can point me in the right direction would be fantastic. I based in Hertfordshire so near would be good. Many thanks in advance. Cliff.

style dynamix in hayes will do it for £199 or call sid at porsche torque 01895 814446 in uxbridge