High flow 2.25" Cat convertor, 2.25" pipe with a good triple flow muffler should get a bit more up and go without sending you mad from the noise
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| GV Exhaust systems Flow Vs Noise https://auszookers.com/forum/viewtopic.php?f=5&t=15647 |
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| Author: | Kooz [ Tue Oct 05, 2010 10:55 am ] |
| Post subject: | GV Exhaust systems Flow Vs Noise |
Looking at an exhaust for my asthmatic GV . Now a decent exhaust will give me flow, but also noise, Im over noise, so the question is, will I get increased flow by increasing pipe diameter size ie 2 1/2 or 2 3/4 instead of the Factory 2" and say a stock Falcon or Commo muffler ? I figure that if a larger muffler/system can handle the flow of engines up to twice the size and still keep quiet, it must surely keep on a little V6 quiet but let it breathe. Am I wrong or heading in the right direction ? |
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| Author: | Fatzook [ Tue Oct 05, 2010 11:18 am ] |
| Post subject: | Re: GV Exhaust systems Flow Vs Noise |
High flow 2.25" Cat convertor, 2.25" pipe with a good triple flow muffler should get a bit more up and go without sending you mad from the noise
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| Author: | Mugwui [ Tue Oct 05, 2010 11:24 am ] |
| Post subject: | Re: GV Exhaust systems Flow Vs Noise |
Talk to the guys at Fatpipes, they gave me a stack of great advice for my GV that was low cost with higher performance and low noise. It was going to cost approx $300 for a complete system from the cat back. |
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| Author: | Kooz [ Tue Oct 05, 2010 11:29 am ] |
| Post subject: | Re: GV Exhaust systems Flow Vs Noise |
Mugwui wrote: Talk to the guys at Fatpipes, they gave me a stack of great advice for my GV that was low cost with higher performance and low noise.
It was going to cost approx $300 for a complete system from the cat back. Is Fatpipes the green place in Moss St opp Autobarn ? |
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| Author: | Mugwui [ Tue Oct 05, 2010 11:53 am ] |
| Post subject: | Re: GV Exhaust systems Flow Vs Noise |
Fat Pipes Custom Exhausts U10/ 1191 Anzac Ave Kallangur QLD 4503 (07) 3285 7417 |
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| Author: | Fatzook [ Tue Oct 05, 2010 11:55 am ] |
| Post subject: | Re: GV Exhaust systems Flow Vs Noise |
Kooz wrote: Is Fatpipes the green place in Moss St opp Autobarn ?
No, but they are good also. They quoted me $750 for a full system including extractors and a new cat. |
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| Author: | MacDaddy [ Tue Oct 05, 2010 1:22 pm ] |
| Post subject: | Re: GV Exhaust systems Flow Vs Noise |
Kooz wrote: Looking at an exhaust for my asthmatic GV . Now a decent exhaust will give me flow, but also noise, Im over noise, so the question is, will I get increased flow by increasing pipe diameter size ie 2 1/2 or 2 3/4 instead of the Factory 2" and say a stock Falcon or Commo muffler ? I figure that if a larger muffler/system can handle the flow of engines up to twice the size and still keep quiet, it must surely keep on a little V6 quiet but let it breathe. Am I wrong or heading in the right direction ?
I just got a 2in Sports System with High Flow Cat on my GV, i got a noisy straight thru muffler for even less restriction, but you can get a sports system with a Quiet muffler, i had one on my 89 Vit, couldnt even hear it... but from my understanding, and i may be wrong, to lower the noise, means baffles or offset flow in the muffler, which generally means more of a restriction, and the exhaust gases stay in the pipe longer... so its a trade off... My GV breathes alot better now, with a fair bit better power/torque in the higher RPM range, from 3000rpm on, it just winds out now... and you may notice a slight drop in power when at low RPM's, when driving in traffic or around town, but i adjusted my driving to suit, just drop back a gear more often, or hold a lower gear longer, easy... 
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