Login    Register

Exhaust

What bits are you adding to your car? A Map ? a Induction Kit ?
Tell us more...

Moderators: WR 1mposter, The Swede, Megaman, danr55, WR1 Bro

  • Author
    Message

Postby wr1500 » Wed Aug 16, 2006 9:55 am

Do up pipes make much difference to performance? what kind of power gains we talking if any?
There can be only WR1!
User avatar
wr1500
 
Posts: 290
Joined: Wed Mar 30, 2005 5:37 pm
Location: Boro

Postby marky mark » Wed Aug 16, 2006 10:11 am

Not really, Gangsta is talking about a true one off
User avatar
marky mark
JPs little helper
 
Posts: 4910
Joined: Mon Oct 10, 2005 9:23 pm
Location: PMSL @ BOBFOC

Postby wr1500 » Wed Aug 23, 2006 9:53 am

Thanks very much for your help mate.
There can be only WR1!
User avatar
wr1500
 
Posts: 290
Joined: Wed Mar 30, 2005 5:37 pm
Location: Boro

Postby stijoy » Wed Aug 23, 2006 10:03 am

i know where there is blitz nur spec ehaust, only done 300 miles going :?:
User avatar
stijoy
Moderator
 
Posts: 12273
Joined: Thu Oct 14, 2004 12:26 pm

Postby wr1500 » Wed Aug 23, 2006 10:18 am

My mate has one of them fitted to his car, i feel its a bit to loud the blitz. Worth a look depending on price, is it a full 3 inch system.
There can be only WR1!
User avatar
wr1500
 
Posts: 290
Joined: Wed Mar 30, 2005 5:37 pm
Location: Boro

Postby stijoy » Wed Aug 23, 2006 10:21 am

wr1500 wrote:My mate has one of them fitted to his car, i feel its a bit to loud the blitz. Worth a look depending on price, is it a full 3 inch system.

he said it cost 580, so i take it that must be for a full system, think he is looking for 380 :!:
User avatar
stijoy
Moderator
 
Posts: 12273
Joined: Thu Oct 14, 2004 12:26 pm

Postby WR1 Bro » Wed Aug 23, 2006 10:24 am

wr1500 wrote:My mate has one of them fitted to his car, i feel its a bit to loud the blitz. Worth a look depending on price, is it a full 3 inch system.


3inch apart from where it joins the cat (2.5inch)
User avatar
WR1 Bro
Site Admin
 
Posts: 20279
Joined: Thu Aug 19, 2004 8:54 am
Location: If skinny, ugly and Scouse was best, then JohnMc would be a porn star legend.

Postby stijoy » Wed Aug 23, 2006 10:33 am

is that what you have got on stu?
does this exhaust involve a remap?
User avatar
stijoy
Moderator
 
Posts: 12273
Joined: Thu Oct 14, 2004 12:26 pm

Postby WR1 Bro » Wed Aug 23, 2006 11:44 am

stijoy wrote:is that what you have got on stu?
does this exhaust involve a remap?


Yes I have the Nur Spec R. I personally love the BOOM BOOM but we do only drive our WR1 for weekend fun. I get in other Scoobies and think they are awfully quiet.

Remap - no need since you aren't removing the Cat.
User avatar
WR1 Bro
Site Admin
 
Posts: 20279
Joined: Thu Aug 19, 2004 8:54 am
Location: If skinny, ugly and Scouse was best, then JohnMc would be a porn star legend.

Postby wr1500 » Tue Aug 29, 2006 11:55 am

Surely this exhaust wont make much difference performance wise, being 3 inch bore it is still restricted by the 2 and 1/2 inch downpipe.
There can be only WR1!
User avatar
wr1500
 
Posts: 290
Joined: Wed Mar 30, 2005 5:37 pm
Location: Boro

Postby marky mark » Tue Aug 29, 2006 12:23 pm

Thats not quite how it works WR1500 unfortunately or we would all be running around with 5" diameter exhausts!

Imagine your car is pumping out 320 BHP of exhaust gas. It goes through some small diameter headers, into a larger diameter up pipe, spins the exhaust turbine, goes down a 3" downpipe and through a bloody great cat, tapers for a short while to 2.5" then back to 3" before exiting the car. You can see that the main restriction will be the cat.

Larger diameter pipework means the capability to flow more gas, but if you think back to physics it will also slow the gas speed down. This is very important pre turbo but also gas speed, pressure,etc after the turbo has an effect on scavenging the cylinders.

At this 320 BHP level, the 2 1/2" section is more than adequate to flow the amount of gas required at a decent speed. If you put a 3" on all you are doing is putting the same amount of gas through a hole that was already fit for purpose when it was a bit smaller. i.e you gain nothing.

At say 370 BHP, the 2 1/2" section is a bit restrictive. put a 3" system on at this point and you may well see a 10 BHP+ rise.

A 3" will see you up to 500 BHP+ before you need to think about anything bigger, unless you like to tell people in pubs you have a 3 1/2" sysyem so your car must be faster.

All the cat back systems wether 2 1/2" or 3" only give you a very small power increase, and this is just because the pipework is straighter and they are better made. If you want noticeable power increase you should look at the decat and remap route.

If you have no plans to change your turbo in the future, save money and put a 2 1/2" system such as the NUR spec on. If however you have further plans, then you would be wise at this stage to get a 3" system and save yourself money in the long term.
User avatar
marky mark
JPs little helper
 
Posts: 4910
Joined: Mon Oct 10, 2005 9:23 pm
Location: PMSL @ BOBFOC

Postby wr1500 » Tue Aug 29, 2006 12:40 pm

Thanks mate, your a great help. I find this exhaust business hard to get my head round i dont what to buy something that I'll end up replacing, or buy something then not get a re-map same then my car go pop, you know what i mean!
There can be only WR1!
User avatar
wr1500
 
Posts: 290
Joined: Wed Mar 30, 2005 5:37 pm
Location: Boro

Postby marky mark » Tue Aug 29, 2006 12:56 pm

as simple as i can make it-

Any system that fits up to your existing downpipe will be 2 1/2", will not require a remap, will not blow your engine, will make a small handful of BHP improvement. This is the one to go for if you are just after a bit of noise.

Any 3" thro' system will require a downpipe to suit. you can have a decat downpipe for the biggest gains, or a hi flow one for a small amount less. Both of these options you should really have a remap, if you dont it may still be all right if you use some NF and install a knocklink to give you a warning.

If you are eco-friendly, dont have a friendly MOT man and dont want the hassle of changing your downpipe at MOT time take the hi flow cat option. If you want max power and have a MOT man that takes a back hander save yourself a lot of money and get a decat one.

If you are planning on seriouslly hiking power in the lomg term, forget the 2 1/2" option.

Final option is youcan have your existing downpipe modified with a 3" end if you so desire, although as stated above this is not going to gain you anything.
User avatar
marky mark
JPs little helper
 
Posts: 4910
Joined: Mon Oct 10, 2005 9:23 pm
Location: PMSL @ BOBFOC

Postby wr1500 » Thu Aug 31, 2006 9:42 am

Thanks very much, again! that is a great help!
There can be only WR1!
User avatar
wr1500
 
Posts: 290
Joined: Wed Mar 30, 2005 5:37 pm
Location: Boro

Postby marky mark » Thu Aug 31, 2006 10:44 am

We do try :wink:

I agree, sorting out exhausts and systems etc........is exhausting.

When you sort out which way to go, there will be minimal power diferences between the systems (I.e a Milltek cat back will give very much the same power as a Blits NUR spec cat back)

Just base your decision on looks, sound that you like, quality, and price.
User avatar
marky mark
JPs little helper
 
Posts: 4910
Joined: Mon Oct 10, 2005 9:23 pm
Location: PMSL @ BOBFOC

Postby wr1500 » Thu Aug 31, 2006 11:08 am

i like the look of the TSL Firestorm, they look well good. Not heard one mind, i dont what a loud exhaust, my missus will want a divorce.
There can be only WR1!
User avatar
wr1500
 
Posts: 290
Joined: Wed Mar 30, 2005 5:37 pm
Location: Boro

Postby Anders_WR1 » Tue Sep 12, 2006 1:17 pm

marky mark wrote:
At this level an uppipe will make no diference, other than to cause your turbo to spool up slower. They are normally onlt fitted with headers anyway, and the standard headers and uppipe are more than adequate to flow 350 BHP. Leave alone till they become restrictive i.e if you are thinking of putting a different turbo on.


I would disagree with this bit. I've been running on ported OEM headers with a matched up-pipe and the car feels like its gained some good torque. The combination of headers and up-pipe have lowered the spool of the turbo by 200 - 300 rpm. I'm now hitting 1 BAR at around 2,700 rpm in 5th gear. So I've got more torque over more of the rev range.

The car feels more alive off turbo as well around the 2,500 to 3,000 rpm area. Personally, I would keep the standard exhaust and fit some ported headers and the matched up-pipe. The whole lot will cost you about
Engine: FMIC with K&N CAIK, Oil Catch Can & MD321H turbo. Next mod: TBD
Brakes: Turbo Groove Discs, Pagid RS29's & Braided Hoses.
Suspension: Whiteline front and rear ARB's, ALK
Anders_WR1
 
Posts: 646
Joined: Sun Sep 18, 2005 10:01 pm

Postby marky mark » Tue Sep 12, 2006 6:20 pm

I was talking about an aftermarket up pipe Anders, which are almost all of a significantly bigger diameter than a o.e one, hence slower spool.

The ported ones (along with headers obviously) work very well indeed and for a moderately tuned car is by far the best option.

I have done a few sets for people and all have said they notice a significantly better spool up.
User avatar
marky mark
JPs little helper
 
Posts: 4910
Joined: Mon Oct 10, 2005 9:23 pm
Location: PMSL @ BOBFOC

Postby Anders_WR1 » Tue Sep 12, 2006 7:52 pm

Ah, ok! I've heard the ported OEM's match well to a TD05-18G. I plan to fit one of these next year, when the warranty is out. I'll probably fit one of Harvey Smiths FMIC's for about
Engine: FMIC with K&N CAIK, Oil Catch Can & MD321H turbo. Next mod: TBD
Brakes: Turbo Groove Discs, Pagid RS29's & Braided Hoses.
Suspension: Whiteline front and rear ARB's, ALK
Anders_WR1
 
Posts: 646
Joined: Sun Sep 18, 2005 10:01 pm

Postby osaka » Sat Dec 16, 2006 10:17 am

aps system is the daddy - we just fitted one to our WR1
3.5" straight through. i think the pro drive one was 2 and 1/4 inch
User avatar
osaka
 
Posts: 162
Joined: Tue Jun 07, 2005 8:03 am
Location: cardiff

Postby chelspeed » Wed Dec 20, 2006 12:07 am

> aps system is the daddy

Excellent, post the dyno sheet so we can see how good it is.
chelspeed
 
Posts: 152
Joined: Thu Aug 19, 2004 11:20 am

Postby SPIKE LIKE MIKE » Wed Dec 20, 2006 7:57 pm

osaka wrote:aps system is the daddy - we just fitted one to our WR1
3.5" straight through. i think the pro drive one was 2 and 1/4 inch


Any problems with the turbo blowing the hoses off with the 3.5" system?
Crash bang wollop!!
User avatar
SPIKE LIKE MIKE
"Special Needs" constable
 
Posts: 13889
Joined: Thu Nov 11, 2004 10:35 am
Location: On stage - drummin!!

Postby osaka » Thu Dec 21, 2006 9:31 am

running sweet as a nut!!

here it is - running 376bhp and approx 370ft llbs of torque
1/4 mile in 11 secs
They mapped is safe for every day use - could have done it to 430bhp, but would have caused problems to the internals.
after christmas is the next stage with the stroker, ecu etc which will easily boost it up to 550bhp plus....
the car sounds nuts and there is no lag what so ever... it goes like a supercharged car with boost from the get go!!

Image
User avatar
osaka
 
Posts: 162
Joined: Tue Jun 07, 2005 8:03 am
Location: cardiff

Postby chris » Fri Dec 29, 2006 3:00 pm

Looks good. 8)
Too petty to be a traffic warden...
chris
 
Posts: 6661
Joined: Fri Aug 27, 2004 9:46 pm
Location: At a car dealers blagging a test drive

Postby WR 1mposter » Fri Dec 29, 2006 7:04 pm

[quote="Anders_WR1"]Ah, ok! I've heard the ported OEM's match well to a TD05-18G. I plan to fit one of these next year, when the warranty is out. I'll probably fit one of Harvey Smiths FMIC's for about
2007 BMW M5
2004 Petter Solberg STi
User avatar
WR 1mposter
 
Posts: 14095
Joined: Mon Jun 27, 2005 12:04 am
Location: Sunny Falmouth

Postby WR 1mposter » Fri Dec 29, 2006 7:06 pm

osaka wrote:running sweet as a nut!!

here it is - running 376bhp and approx 370ft llbs of torque
1/4 mile in 11 secs
They mapped is safe for every day use - could have done it to 430bhp, but would have caused problems to the internals.
after christmas is the next stage with the stroker, ecu etc which will easily boost it up to 550bhp plus....
the car sounds nuts and there is no lag what so ever... it goes like a supercharged car with boost from the get go!!

Image


Give us a run down on what you have had done :wink:
2007 BMW M5
2004 Petter Solberg STi
User avatar
WR 1mposter
 
Posts: 14095
Joined: Mon Jun 27, 2005 12:04 am
Location: Sunny Falmouth

Postby osaka » Sat Dec 30, 2006 9:38 am

this is it so far:
Engine:

GFB Stealth FX BOV
Buddyclub Positive charge unit
Banner Unibull 4 point battery
STI Earthing kit
Walbro Fuel Pump
HKS Turbo timer
HKS Iridium Plugs
HKS Guages In Triple Carbon Pod
APS 3.5" turbo back exhaust
APS header 4-2-1 Header
Blitz SBCI Boost Controller
APS Induction kit Induction Kit
GFB 3 Pulley Kit inc belts
Power Enterprise Timing Belt
Power Enterprise Oil Filter
Re-map ECU
Power Enterprise Injectors
APS SR40 Turbo
APS Top Mount intercooler
Fuelcat


Suspension:

Tein Type flex suspension & EDFC controller
Osaka Carbon Fibre Strut Bar
Whiteline Suspension Parts (everything they list in the book for the car exc anti roll bars)

Brakes:

Brembo 4 pots
EBC Red Stuff ceramic pads
EBC Turbo Groove Discs

Exterior Styling:

Osaka STI8 Carbon Spoiler
Carbon fibre FQ style Diffuser
Custom Carbon Fibre Ganador Style Mirrors
Chragespeed full kit inc wings
STI Mud flaps

Interior Styling:

Carbon Fibre Custom Guage Pod

Misc Mods:

PIAA Lighting
AES HID conversion
PIAA Wipers
PIAA Sports Horn
GFB 6 Speed Short Shifter
Tein Bonnet damper kit
Osaka front carbon strut bar
Cusco rear strut bar

Wheels:

Trafficstar RTS in custome gold 18
User avatar
osaka
 
Posts: 162
Joined: Tue Jun 07, 2005 8:03 am
Location: cardiff

Postby osaka » Sat Dec 30, 2006 9:42 am

Spike "THE LEGEND" Mike XXX wrote:
osaka wrote:aps system is the daddy - we just fitted one to our WR1
3.5" straight through. i think the pro drive one was 2 and 1/4 inch


Any problems with the turbo blowing the hoses off with the 3.5" system?


no problems with this or anything else so far - touch wood!!
User avatar
osaka
 
Posts: 162
Joined: Tue Jun 07, 2005 8:03 am
Location: cardiff

Postby WR 1mposter » Sat Dec 30, 2006 5:29 pm

osaka wrote:
Spike "THE LEGEND" Mike XXX wrote:
osaka wrote:aps system is the daddy - we just fitted one to our WR1
3.5" straight through. i think the pro drive one was 2 and 1/4 inch


Any problems with the turbo blowing the hoses off with the 3.5" system?


no problems with this or anything else so far - touch wood!!


Not anymore for me since fitting of Samco hoses :wink:

Osaka, have similar engine stuff to you, APS stuff, running virtually identical power etc :wink:
2007 BMW M5
2004 Petter Solberg STi
User avatar
WR 1mposter
 
Posts: 14095
Joined: Mon Jun 27, 2005 12:04 am
Location: Sunny Falmouth

Previous

Return to Tuning and styling On the WR1

Who is online

Users browsing this forum: No registered users and 11 guests

cron