exhaulst
15000
Joined: Feb 2005
Posts: 19
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It entirely depends on what specification your engine is, what capacity, is it turbocharged, what sound limits are you trying to meet (ie intend to track day it?).
I'd assume as you are going for 3 inch bore piping then its a turbocharged engine, and as your name is Astra12sec then its a significantly modified 2 litre turbo (LET aint it?).
If it is then you will not be getting a huge amount of noise from the exhaust compared to a highly tuned NA set up, so one scilencer would probably give an exhaust with a fruity note. The scilencer volume and design is also important. For high flow rate, a 'straight through' design, with perforated tube in the centre and then a can surrounding it filled with deading matrial. The convention for road cars i think is a total scilencer volume of 15 x the engine capacity, but this obviously varies massively with engines and the noise levels.
It really is hard to say, if my assumptions about your engine are correct then i'd say go for a single scilencer of about 10 litres volume, but thats really a guess, it depends purely on what noise you want.
For the turbo application minimal backpressure will give you the fastest turbo spool up, but you will sacrifice off boost performance and low range torque.
It totally depends on what you want.
I'd assume as you are going for 3 inch bore piping then its a turbocharged engine, and as your name is Astra12sec then its a significantly modified 2 litre turbo (LET aint it?).
If it is then you will not be getting a huge amount of noise from the exhaust compared to a highly tuned NA set up, so one scilencer would probably give an exhaust with a fruity note. The scilencer volume and design is also important. For high flow rate, a 'straight through' design, with perforated tube in the centre and then a can surrounding it filled with deading matrial. The convention for road cars i think is a total scilencer volume of 15 x the engine capacity, but this obviously varies massively with engines and the noise levels.
It really is hard to say, if my assumptions about your engine are correct then i'd say go for a single scilencer of about 10 litres volume, but thats really a guess, it depends purely on what noise you want.
For the turbo application minimal backpressure will give you the fastest turbo spool up, but you will sacrifice off boost performance and low range torque.
It totally depends on what you want.
Thread Starter
15000
Joined: Jan 2006
Posts: 17
Likes: 0
NICE ONE MATE, YES IT IS A 2.0L TURBO WITH 361BHP(WITH GAS). IM GETTING RID OF THE LITTLE HAIR DRYER IVE GOT AND FITTING A T34 ON A CUSTOM MANIFOLD TO FIT MY ENGINE, WAS THINKING OF A SCORPIAN BACK BOX ?
ALSO DITCHING THE INTERCOOLER AND GOING FOR A CHARGE COOLER SET UP AS THE BOYS AT PACE RECKON THIS WILL BE MUCH BETTER ON THE STRIP,ETC.
ALSO DITCHING THE INTERCOOLER AND GOING FOR A CHARGE COOLER SET UP AS THE BOYS AT PACE RECKON THIS WILL BE MUCH BETTER ON THE STRIP,ETC.