35 replies to this topic

[Jay05]

I have been using search and found a few answers, but i am very interested in the PIPER SYSTEM i live about 5miles away from them! can you tell me more about the VX220 PIPER exhaust is it a good system would you say ites better than the others for sound + quality + Bhp Gains MILLTEK-? PIPER-? JANSPEED-? CUSTOM powerflow or others-? Info: sound clips, pics, would be awsome thank you. i know this type of queston must get realy anoying but please try and help its just i dont know whats best to do i want the pre-cat removed but do you think i shoud get a backbox and get powerflow to remove the pre-cat>?

[Craige_o1]

I've got the Janspeed.. Nice system, Sounds great but maybe a bit loud for track days. I think the piper is similer system..

[clipping_point]

Made a table

HERE

Edited by clipping_point, 01 October 2005 - 11:39 PM.

[Jay05]

clipping_point- thanks alot thats a realy good read! but after all that im still thinking "what shall i get!??" Craige_o1-cool whats it like (looks?-sound any sound clips?-have you just got the backbox? Thanks

[Craige_o1]

I've got a full system.. i orderd a de cat pipe & back box but when it turned up i had a performace cat lol.. The look is cool.. the pipes are a bit square if that makes sence witch suits the car.. The sound is wicked... really loud and makes the car sound like its got a lot of power.. I've not got any pics or anything yet.. The system was 700quid and me and a mate fitted it in two eves.. we could of done it in one if we did not have to cut all the old bolts off. . Craig

[LazyDonkey]

clipping_point-   thanks alot thats a realy good read! but after all that im still thinking "what shall i get!??"

Craige_o1-cool whats it like (looks?-sound any sound clips?-have you just got the backbox?

Thanks

The standard wisdom i've noticed on here is that if you want BHP gains, go for the full Miltec.

If you just want noise the a Janspeed / VSE or Regal will make your ears bleed ......with the likes of Piper not being far behind.

I know Jim Cross got a custom set up made, but more others just get an off the shelf set up. My car came with Piper on it and i love it, but then I'm childish and like loud zuasts !

Edited by LazyDonkey, 03 October 2005 - 06:15 AM.

[Ratspants]

The standard wisdom i've noticed on here is that if you want BHP gains, go for the full Miltec.

If you just want noise the a Janspeed / VSE or Regal will make your ears bleed ......with the likes of Piper not being far behind.

Any exhaust that removes the pre-cat and adds a sports cat will give you the power gains, the actual differences between the manufacturers is small. Miltek is alleged to give the "most" but it's a marginal difference and they are all good.

IMO: The VSE makes the best sound and the Piper looks the best design (big bends).

I think I would pick a full Piper.

Ben

[Jay05]

Thanks for rounding it up for me. the janspeed sounds great and so does piper i think i may go for a piper as they are just around the corner and i might ask them to make me one with a different size tip! would there full system remove the "pre-cat"? also i dont even know where the pre-cat is! its got such a small system on the vx and its ment to have 2 "cats""?? also i quit liked the look of KOMO-TEC and is the Lotus-special any good and where can i get one of them? Thanks alot if you can all help me please.

[Ratspants]

would there full system remove the "pre-cat"? also i dont even know where the pre-cat is! its got such a small system on the vx and its ment to have 2 "cats""??

also i quit liked the look of KOMO-TEC
and is the Lotus-special any good and where can i get one of them?

There are two cats, a pre-cat and the main cat. The Pre-cat is there for cold-start EU emissions legislation and the main-cat is there to pass the MOT. The "full" systems have no pre-cat and replace the main cat with a lower density but more efficient sports cat.

The Komo-tec looks ace but you'll need to import from Germany (someone on here has ordered parts from the German Komo-Tec website before so it's not as much hassle as you might think).

I wonder if Piper would do black tips like the VSE....

Ben

[Thorney]

I think its was the Piper that someone has had huge issues with (running lean) I tech2'd it at the National meet and he took a picture of it to get his money back. That was a Piper wasn't it?

[Jase_MK]

I wonder if Piper would do black tips like the VSE....

I asked them and they said no. HOWEVER... the twin tail pipes bend round to the right as they enter the car and after about 3 inches there's a join where they can be removed. So technically you could remove that small section and get it powdercoated (or whatever the best way of blackening exhausts is). If you asked them nicely they could probably sell you a spare set of tailpipes as well.

[Jase_MK]

I think its was the Piper that someone has had huge issues with (running lean) I tech2'd it at the National meet and he took a picture of it to get his money back. That was a Piper wasn't it?

Pretty sure that was Ben (Blue NA?). If so, it's a Janspeed. He's had all sorts of probs with the ECU light etc.

[Jay05]

so what part of the system is the pre-cat sitting? An is this true about PIPER? if so im not interested! reason im asking is tht i want a realy good system and dont realy want to get the milltek (dont get me wrong i know its one of the best!) but want to get somthing else also with a bit more grunt! i may even just get a Realy well made backbox from one of the selected companys piper,milltek,janspeed,Komo-tec,moto-concept then go down powerflow and get a 2.25" straight through system decatd all the way-would that give realy good gains also wont damage the car, (i had the same on my Clio Cup and was a realy good mod on them. is it the same on the VX?

[Thorney]

Ah, Janspeed, thought I was wrong. Hitec tested the Janspeed and Piper against the Milltek and found the Milltek gave least back pressure, hence Hitec now fit the Milltek as part of their SC kits so if you want power your choice is pretty clear

[Jay05]

Thorney-Ok well would the Milltek backbox + a custom straight throught system do well? and just wonderd if you can tell me, would a straight throught not CAT work well? meaning a custom setup cos i dont realy want to spend £1000 i thought maybe a nice well made bakbox and then get the rest done custom. would be great if you could help thanks.

[Ratspants]

Hitec tested the Janspeed and Piper against the Milltek and found the Milltek gave least back pressure, hence Hitec now fit the Milltek as part of their SC kits

Did they produce any comparative figures for non-SC NAs? I'd like to see just what sort of percentage difference in torque and power there is between the full Piper, Janspeed and Milltek systems on a stock NA.



Edit: (Jay05) On another note, do a search for "decat". It's been debated quite a bit. For example, see >here<

Ben

Edited by Ratspants, 03 October 2005 - 10:57 AM.

[Thorney]

To pass an MOT/roadside test you need a cat. Removal of precat is fine. The MIlltek removes the precat, replaces the main cat with a race cat and a decent back box. Hitec tested the systems on their own on a stock car and a SC car and found the Milltek was most efficient and offered least back pressure. You could try a decat pipe over a race cat which would be cheaper and likely to offer a 'little' more power over the race cat I doubt you'd get enough to actually feel it and you'd still fail and MOT. Assuming you did that you'd need to get the Milltek/other exhuast first and then have the decat pipe welded in - not a pita but hardly that straightforward.

[Jay05]

Ah ok well just one more question would a 100cell cat Pass MOT? also does just the milltek backbox in its own replace the pre cat? or is that part of the system? sorry if a stupid question! i dont an never seen a VX system in the flesh! Ratspants-good read thanks but now just thought it may be a pain when MOT time! it was ok witht he clio cup as it still had like 2 years before MOT!

[Jase_MK]

100 cell cat should be fine for MOT. This official Vauxhall diagram might help you understand where stuff is located:

Attached Files

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[Jay05]

Jase_MK- that clears it up! thanks the 100cell is the better out if the two yes as in its better than the 200cell more flow, I just was on the phone to PIPER and they have got a sports cat option + a decat option but they are £450 + 360 for the backbox. but if i can get a 100cell cat il get that custom made onto whatever backbox i choose.