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Author Subject: Decat, strait through to scorpion back box
eddiebeano

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Location: Edinburgh

Registered: 31 Dec 2008

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Post #26
It took mine a while aswell, 2 or 3 months, now I can get them regularly, just need the exhaust hot, wot through to about 6k then ease off, whilst feathering the throttle, I can get upto 5 small pops and sometimes a bang.

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Posted 4th Nov 2012 at 22:38
eddy_gti6

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Location: Durham

Registered: 20 Oct 2008

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Post #27
Al just have your exhaust off you if you dont want it Wink

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Posted 12th Nov 2012 at 08:13
rob_humphrey

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Location: St Austell

Registered: 16 Sep 2011

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Post #28
Will having this setup change back pressure or do anything negative to performance

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Posted 23rd Nov 2012 at 21:20
eddiebeano

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Registered: 31 Dec 2008

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Post #29
I didn't find it did, if anything it made it pull a lot better. When I was on track with Jeffers at knockhill it was neck and neck. He had mild cams, a cat and scorpion whereas I had a standard engine a decat and straight through / scorpion.

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Posted 23rd Nov 2012 at 21:49
eddy_gti6

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Post #30
I loved this set up i sold you eddie. Cant wait to have it back for the V6 Cool should sound awesome

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Posted 23rd Nov 2012 at 21:57
rob_humphrey

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Post #31
Do you know if the centre section on a hdi is the same shape and length as a 6 the reason i ask this is because ive got a straight through centre section on my hdi that i could switch over

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Posted 23rd Nov 2012 at 22:00
eddy_gti6

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Post #32
rob_humphrey wrote:
Do you know if the centre section on a hdi is the same shape and length as a 6 the reason i ask this is because ive got a straight through centre section on my hdi that i could switch over


Yes they fit mate. Mine was 2.25inch if i remember right. Will measure it sunfay when i pick it back up

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Posted 23rd Nov 2012 at 22:33
rob_humphrey

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Post #33
Ideal thanks mate hoping it was so it should free up the revs a bit as well

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Posted 23rd Nov 2012 at 22:36
eddy_gti6

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Post #34
rob_humphrey wrote:
Do you know if the centre section on a hdi is the same shape and length as a 6 the reason i ask this is because ive got a straight through centre section on my hdi that i could switch over


Yes they fit mate. Mine was 2.25inch if i remember right. Will measure it sunfay when i pick it back up

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Posted 23rd Nov 2012 at 23:18
JWP EFi

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Location: edinburgh

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Post #35
eddy_gti6 wrote:
rob_humphrey wrote:
Do you know if the centre section on a hdi is the same shape and length as a 6 the reason i ask this is because ive got a straight through centre section on my hdi that i could switch over


Yes they fit mate. Mine was 2.25inch if i remember right. Will measure it sunfay when i pick it back up


its just over 50mm, or 2 inch in old money
Posted 23rd Nov 2012 at 23:21
eddy_gti6

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Post #36
T99PUG wrote:
eddy_gti6 wrote:
rob_humphrey wrote:
Do you know if the centre section on a hdi is the same shape and length as a 6 the reason i ask this is because ive got a straight through centre section on my hdi that i could switch over


Yes they fit mate. Mine was 2.25inch if i remember right. Will measure it sunfay when i pick it back up


its just over 50mm, or 2 inch in old money


Knew it was round about that Smile

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Posted 23rd Nov 2012 at 23:26
JWP EFi

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Post #37
eddy, i had yur old system on my 6 for couple weeks and i can honestly say it made a big

difference, pops, bangs and engine pulled a hell of alot better higher up, even with no centre box

it was relatively quiet on light throttle yet sounded mean as feck when i gave it some torture lol
Posted 23rd Nov 2012 at 23:31
eddy_gti6

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Post #38
I Love it. Thats why i am buying it back. Just hope its good on the v6. I seen on the 406 forum people put 3" bore on them what to be hinest is far too big. I have a 3" on my audi s4 what was 2.7 v6 twin turbo and it was fine but on an NA car its too big. 1/4 " bigger than standard i would say is best as it keeps the back pressure aswell and gives off an awesome sound Cool

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Posted 23rd Nov 2012 at 23:40
JWP EFi

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Post #39
ive just put my 2.5'' magnex back on, mid range feels better but top end isnt as good as scorpoin

weird as you'd think it would be the opposite
Posted 23rd Nov 2012 at 23:43
eddy_gti6

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Post #40
Av had 3 magnex systems and loved them on my 1st 6 and my rallye then i had a scorpion system and found them so much better, then had another magnex and i hated it Sad

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Posted 23rd Nov 2012 at 23:46
JWP EFi

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Post #41
magnex are VERY boomy, but i repacked my back box, so much better now but tbh i'd prefer

scorpion for when your giving it the high rev treatment, rev limit seems endless then your greated

with a nice pop at the limiter/gear change
Posted 23rd Nov 2012 at 23:49

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