Pipewerx 3" Exhaust Down Pipe High Flow Sports Cat Help

[rashg60]

I need some advice. I am thinking of going for this:-

http://www.ebay.co.uk/itm/golf-mk5-gti-3-Exhaust-Down-Pipe-High-Flow-Sports-Cat/300361586764?_trksid=p5411.c100170.m2943&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20140131123831%26meid%3D0cfd795f9f82482ab3a6e93092a96b88%26pid%3D100170%26rk%3D1%26rkt%3D15%26sd%3D300361586764

I currently have the standard exhaust system. My questions are:-

Is the most power gain achieved from the downpipe/sports cat as opposed to the rear section?
Or is it recommended to change the entire system?
Would the above downpipe/sports cat fit the standard system? Or would this require additional chopping and changing?
What are people's thoughts on the Pipewerx system?
Is it any louder?
How much power gains to be expected?

I am due for a stage 1 R-Tech remap next week, so wanted something to compliment that.

All comments appreciated 

[mk5-beast-91]

Ive got the pipewerx decat downpipe and love it. Sounded abit raspy when bolted to the oem cat back but now have a miltek cat back and sounds awesome. But ive got a decat one so cant say with the sport cat. It will bolt straight to the oem exhaust so dont need to do any chopping. Fit is perfect to.
as far as im aware the restrictions are mainly in the downpipe and not in the cat back part. So id get the downpipe first and at a later date get a cat back system on if funds are short.

[GrayMK5GTI]

I had this on my old Ed30.

Saw 314bhp & 320lb/ft at R-Tech with only a panel filter & downpipe & sports cat. Sounds great with the OEM cat back, not too loud, but a great exhaust note 

Pre-map I had just shy of 260bhp so it gives around 15-20bhp. A cat back would have seen another ~3bhp  at this level of tune.

The BCS sports cats are better quality and higher flowing overall, but Pipewerx is great at the price.

I had Alex @ AKS trim 1.5inches off the pipe as the tailpipes stuck out a bit too much for my liking.

[rashg60]

Thanks guys - it's the price that I like!

I used Pipewerx about 12 years ago for some custom made quad tailpipes on my Corrado G60 - car pic is still up on their gallery coincidentally (the yellow Corrado on the 2nd row of Sports & Saloons section):-

http://pipewerxcars.com/pw2_gallery.html

[rashg60]

Also, just to be clear, the vast majority of the gains are achieved by the downpipe and sports cat - so why would you spend another £450+ on the cat back system? I'd be inclined to leave it alone if it's not even another 5bhp for so much money!

Unless I'm missing something of course........

[GrayMK5GTI]

Also, just to be clear, the vast majority of the gains are achieved by the downpipe and sports cat - so why would you spend another £450+ on the cat back system? I'd be inclined to leave it alone if it's not even another 5bhp for so much money!

Unless I'm missing something of course........

Your right. If you are after more than 330bhp then a larger bore cat back is required, but up until then the cat back is for noise and looks 

[rashg60]

I've finally saved up enough pennies for this but have been reading other people's thoughts on the exhausts and it appears that most people go for the 2.75 inch pipes. What are the main differences with the sizes (apart from the sizes of course)?

I just assumed that the 3inch pipes would be better as they are bigger? What is the standard size of the exhaust? Pipewerx tell me that their 3 inch pipe would fit the standard back box system.

[mk5-beast-91]

Standard size is 2.5inch. Milltek is 3inch downpipe to 2.75inch catback and other brands are 3inch.
i got told the milltek offers better torque but less hp. Wont be a problem on stock turbo tho.
and yes the pipewerx bolts straight onto the oem catback as it has a reducer to fit.

[hogan]

Did you end up getting one of these?

Wondering does the Pipe Werx downpipe and sports cat show up used often?

[rashg60]

Not come across any used ones on eBay or anything but I think for that price I wouldn't mind going for new (as I'm intending to keep the car long term).

Unfortunately not ordered yet. I've had some unexpected house-related expenses come up (roof and garden shed). Gotta keep the missus happy. Exhaust money has gone on roof......nnnnnnoooooooo!!!!

It just means I have to wait another couple of months for my precious exhaust. I have decided to definitely go for the Pipewerx downpipe and sports cat though. I really cannot wait.......

[grumpy]

Hi mate,
not sure if you've seen this bit of info but it helps explain the importance of a free flowing exhaust system. Yes I think the main restriction is at the front end but if you want your motor to flow fully then a free flowing rear system helps.

Thanks.

http://r-techperformance.co.uk/2-0-tfsi-stage-1-guide/

[rashg60]

After months of deliberation I have finally placed my order for the exhaust......and I've not gone for the Pipewerx one!

After reading many reviews and other people's comments I have decided to go for the BCS full Powervalve system. A lot more money but I didn't want to regret it later. I am booked in with Nige in 2 weeks time and cannot wait.

I had the stage 1 R-Tech remap done about 6 months ago, would people recommend getting it remapped again after the exhaust system has been fitted? I am going for the 200 cell sports cat instead of a decat for MOT reasons.

Has anyone else got this system and what sort of power is expected? With the stage 1 map I am running 247bhp.

Any help/advice would be appreciated.

[AJP]

I'd certainly go for a map tweak once the BCS is fitted, I'm pretty sure I've read the full turbo-back is good for 20+bhp with a map that takes it into account.

With an inlet on top you'd be at what's usually recognised as Stage 2, so being halfway there hardware-wise I'm sure a tweak to the map can get the best out of the BCS alone.

An uprated pump like Loba or APR would make things better still. Not cheap, but a good increase in midrange. You wouldn't see a massive peak bhp gain, but with the BCS you'll gain torque across the rev range, and that's what counts.

[rashg60]

Thanks AJP - not sure what inlet you are referring to?

I was secretly hoping the exhaust would let me get to stage 2 comfortably. How easy are the fuel pumps to fit?

[AJP]

Thanks AJP - not sure what inlet you are referring to?

I was secretly hoping the exhaust would let me get to stage 2 comfortably. How easy are the fuel pumps to fit?

As in Evoms, ITG Maxogen etc. Personally, I don't think they're that necessary unless you're chasing max peak hp numbers. Plenty of people on here saying they lose a bit of low-end torque, sound chavvy etc.

I wouldn't worry too much about having exactly the right hardware for 'Stage 2' - This 'Stage' thing is just a name at the end of the day. A car with an uprated HPFP, turboback and aftermarket inlet isn't going to be completely different to an identical spec car with the factory inlet. And as R-Tech's maps are truly custom you'll get the best software for your hardware, and you can call it Stage whatever you like..

Obviously there are generic Stage 2 maps that other tuners offer that will be designed to work with certain hardware - more often than not this would necessitate an aftermarket inlet. But that's irrelevant when you're getting a bespoke map at R-Tech.

As it happens, I'm Stage 1 R-Tech, and if I decide to go for more an uprated HPFP and turbo back will be how I do it. (Also looking at a hybrid k03 but that's another story..)

Should make for a very drivable, torquey car.