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 Posted: Fri Dec 31, 2010 8:48 am |
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Joined: Oct 03, 2010
Posts: 417
Trade Rating: +1
Location: Neath, South Wales.
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| Edward wrote: |
| Powerflow and other custom outfits do not use mandrel bends. So you new system could well be more restrictive that the original system. |
In a recent Redline issue they tested 3'' systems, a ''crinkle'' bent pipe and a mandrill bent pipe and the crinkle was only slightly down on power as most of the gas flows on the outside of the curve 
They had some silly gains on the car though, it was an impreza and they had 30bhp with the off the shelf one
Sam.
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Posted: Fri Dec 31, 2010 8:59 am |
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Joined: Feb 07, 2010
Posts: 1493
Trade Rating: +8
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If it's for performance gains powerflow are generally pap from numerous years on many forums, for just a factory replacement i'm sure they are ok though, i'd imagine they would be the best bet if you don't want a loud replacement, which is probably why they aren't good for gains (restrictive).
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Posted: Fri Dec 31, 2010 11:21 am |
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Joined: Feb 07, 2010
Posts: 5574
Trade Rating: +11
Location: UK
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its just the backbox he wants so mandrel bends dont need to be taken into consideration here? (as apposed to a full system obviously)
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Posted: Fri Dec 31, 2010 11:22 am |
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Joined: Feb 07, 2010
Posts: 13077
Trade Rating: +65
Location: England
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Mine seems fine
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Posted: Fri Dec 31, 2010 3:31 pm |
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Joined: Feb 08, 2010
Posts: 960
Trade Rating: +11
Location: Hertfordshire
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never had problem with mine from fitment to removal 50k later
tbf there have been good/bad comments about most of the 'budget' aftermarket exhaust systems
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Posted: Fri Dec 31, 2010 10:28 pm |
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Joined: Mar 25, 2010
Posts: 2670
Trade Rating: +11
Location: Ipswich
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No problems at all with mine!
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| PM me for Valeting & Detailing services at great rates!
Detailing Guides are also available ask me for more information. | |
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Posted: Fri Dec 31, 2010 11:02 pm |
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Joined: Feb 07, 2010
Posts: 1261
Trade Rating: 0
Location: Leeds
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customs are s**t mines powerflow at the min and it could be so much smoother piping, my sportex on my old gti was cheaper and much better less piping better bends etc
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| Signature removed due to size | |
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Posted: Fri Dec 31, 2010 11:03 pm |
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Joined: Feb 07, 2010
Posts: 1261
Trade Rating: 0
Location: Leeds
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never read the just a backbox bit, tbh it wont matter too much what you get
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| Signature removed due to size | |
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