All Things Mk5 > Performance Modifications

Which Exhaust??

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Powervalve Nige:
Thanks for that  :happy2:

Powervalve system below featuring the optional DP Wrap...


akbarirfan:
Hi Nice, any reason why just the dp is wrapped and not the whole length of the exhaust? Thanks

Powervalve Nige:
Hi there
Wrapping the pipe is designed to have two important effects
1) To reduce under bonnet temperatures in order to maintain a dense charge into the engine ( and in addition reduce heat soak into surrounding intercooler piping)
2) The more heat energy in your exhaust, the better spooling of the turbo as the hotter the exhaust gasses, the lower their density, and the higher the pressure drop.

Pressure behind the turbo outlet is a big red light for tuners - the lower the pressure here the more boost you can run - so go big Dp and wrap that sucker... :happy2:

Cheers
Nige

SurreyED30:
My downpipes wrapped  :P haven't had any issues but some friends of mine downpipes/manifolds have cracked due to the heat being stored by the wrap...they could have been given duff info from the garages they went to but it's odd that 2 friends on 2 occasions have had the same full systems, same diameter and material yet the wrapped mani has cracked every time. the cars where 106 GTi's ( we've all had them ) and the exhausts where bought from the same place as it was a group buy. Could be the quality of the exhaust but it's strange that on both occasions the wrapped manis cracked. Luckily my Quiksilver rallye head conversion never cracked  :P I Check my downpipe every time I jack her up for piece of mind but as said above, I've had no issues with mine.
Jake

Gene Hunt:

--- Quote from: betty_swollox on May 30, 2014, 10:55:19 pm ---
--- Quote from: JCWT on May 30, 2014, 09:54:48 pm ---Judging by YouTube videos, BCS would be my choice.

--- End quote ---

Sounds even better in real life ;)

--- End quote ---
..............my choice at the end of this month. Will be cat back only & think it's the sport?. Just want a bit more noise over the stock system. :happy2:

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