power lost on straight though exhaust system ( please answer ) - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

Not logged in [Login - Register]

You Are Not Registered Or Not Logged In

Corsa Sport » Message Board » General Chat » power lost on straight though exhaust system ( please answer )

New Topic

New Poll

Subscribe | Add to Favourites

You are not logged in and may not post or reply to messages. Please log in or create a new account or mail us about fixing an existing one - register@corsasport.co.uk

There are also many more features available when you are logged in such as private messages, buddy list, location services, post search and more.

markx14xe

Member

Registered: 5th Oct 08
Location: grimsby
User status: Offline

13th Oct 08 at 15:05

i had a scropin 3 inch imola exhaust system 2 boxes
replaced with a remus race pipe and magnex 5x3 oval backbox sounds nice but ive lost power my
corsa b 1.4 16v sport (x14xe)
did 112mph top speed
now it does 105mph does anyone know why???

Dan Lewis

Member

Registered: 31st Jan 05
Location: Leicestershire
User status: Offline

13th Oct 08 at 15:06

why do you need to go that fast? its only 7mph

deano87

Member

Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
User status: Offline

13th Oct 08 at 15:08

It isn't just about top speed - more how you get there.

swill_omnibus

Member

Registered: 12th Dec 07
Location: : S. wales Drives: Dodge Caliber
User status: Offline

13th Oct 08 at 15:16

Some say ti's a myth, some say theres evidence, but all in all:-

Maybe it's something to do with because its a straight through, theres no pressure in the system?

Fonz

Premium Member

Registered: 12th May 06
Location: Newbury, Berks
User status: Offline

13th Oct 08 at 15:19

you may have lost power but gained in torque.....get it on the rollers!

it is said however that losing pressure will lose power

geth_16vsport

Member

Registered: 7th Jan 08
User status: Offline

13th Oct 08 at 15:21

my 1.4 sport with ebay inlet,4-1 sportx and cat back i got my car off the clocks but tom tom(sat nav) sed it was 124mph on the limiter in fifth gear
this doesnt help at all but its was fun

deano87

Member

Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
User status: Offline

13th Oct 08 at 15:26

Limited in fifth

I wish my car could do that.

Daimo B

Member

Registered: 20th Mar 00
User status: Offline

13th Oct 08 at 15:48

Bore sizes give different gains.

Larger bore, less torque, more peak power.

Small bore, more torque, less peak power.

I think its that way round anyway.

From memory, Remus has a STANDARD exhaust bore to the rear box. So the only increase your really getting is a slight less restrictive middle box, and rear can.

Being straight through will only really effect an NA engine if you've gone too large. Doesn't work like a turbo where you need the gasses out as fast as possible.

flybikeslee

Member

Registered: 2nd Jan 07
Location: Liverpool
User status: Offline

13th Oct 08 at 15:49

back pressure

Ellis

Member

Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline

13th Oct 08 at 16:06

quote:
Originally posted by flybikeslee
back pressure

Nick-S

Member

Registered: 3rd Mar 04
Location: Leigh. Drives: RS Megane 230 F1 Team R26
User status: Offline

13th Oct 08 at 16:11

dave a once explaned back pressure and i still dint realy understand it

JM_16v

Member

Registered: 17th Oct 05
Location: Essex Drives: GLC63S
User status: Offline

13th Oct 08 at 17:00

quote:
Originally posted by flybikeslee
back pressure

alan-g-w

Member

Registered: 9th Nov 07
Location: Glasgow
User status: Offline

13th Oct 08 at 19:04

quote:
Originally posted by VXR

Larger bore, less torque, more peak power.

Small bore, more torque, less peak power.

Would have thought it was the other way round tbh - the faster the gasses are leaving, the easier it'll be for the engine to turn, thus creating more torque?

Just a theory, possibly monumentally wrong.

sport16v

Member

Registered: 25th Jun 07
Location: Ipswich, suffolk
User status: Offline

13th Oct 08 at 19:48

I always thouight that straight through gives better flow characterists so you should get MORE power, how weird

Hamish

Member

Registered: 4th Apr 05
Location: Ashtead, Surrey Drives: 100bhp Mint with Hole
User status: Offline

13th Oct 08 at 19:49

quote:
Originally posted by sport16v
I always thouight that straight through gives better flow characterists so you should get MORE power, how weird

on forced induction cars maybe

markx14xe

Member

Registered: 5th Oct 08
Location: grimsby
User status: Offline

14th Oct 08 at 13:03

thanks guys

markx14xe

Member

Registered: 5th Oct 08
Location: grimsby
User status: Offline

14th Oct 08 at 13:06

quote:
Originally posted by Dan Lewis
why do you need to go that fast? its only 7mph

because i like to

Daimo B

Member

Registered: 20th Mar 00
User status: Offline

14th Oct 08 at 13:14

quote:
Originally posted by alan-g-w

Would have thought it was the other way round tbh - the faster the gasses are leaving, the easier it'll be for the engine to turn, thus creating more torque?

Just a theory, possibly monumentally wrong.

Can't remember tbh, been so long since i've needed to

Graham88

Member

Registered: 16th Apr 07
Location: South East Kent Drives: E46 M3
User status: Offline

14th Oct 08 at 13:33

Well on my old bike I could reach 142 on the clocks with an exhaust, when the silencer came loose and came off I could only do 125, I imagine it's the same situation?

sand-eel

Member

Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
User status: Offline

14th Oct 08 at 13:48

you can setup the management to work with the exhaust better.

Nick-S

Member

Registered: 3rd Mar 04
Location: Leigh. Drives: RS Megane 230 F1 Team R26
User status: Offline

14th Oct 08 at 16:07

quote:
Originally posted by sand-eel
you can setup the management to work with the exhaust better.

theres not alot you can do to the map once the exhaust gasses have left the engine tbh

[Edited on 14-10-2008 by GSi_16v]

Mobby

Member

Registered: 31st Dec 07
Location: Leicestershire
User status: Offline

14th Oct 08 at 16:16

quote:
Originally posted by Graham88
Well on my old bike I could reach 142 on the clocks with an exhaust, when the silencer came loose and came off I could only do 125, I imagine it's the same situation?

my brother took the muffle packing out of his can, will this do the same?

New Topic

New Poll

Corsa Sport » Message Board » General Chat » power lost on straight though exhaust system ( please answer )

23 database queries in 0.0105472 seconds