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Old 29-04-2017, 21:56   #1
Bennetts101
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Decisions decisions

Evening all

I cannot decide which cat back system im going to put on my 7, I do a few trackdays here and there so has to be under 99db, I already have a 3" downpipe and decat fitted.

Im currently looking at two HKS systems, the silent high power and the ss hi power 409.

Has anyone any experience with either of these, or should I be looking at any other systems?

Thanks
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Old 29-04-2017, 22:19   #2
Ben_r1
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99db is a push with a decat, I'd be looking at the hks silent or you may need a silenced decat to go for anything louder
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Old 29-04-2017, 22:37   #3
Phil2333
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Had both those systems on my 6...

Hi power silent.... Full stainless, good quality, very quiet on idle.... But tapered down in the back box and was quite restrictive.

Hi power 409.....big draw back is its not all stainless, so does rust. Better sound/growl than the silent... But bent around the diff which I didnt like.

To add... Both systems were totally fine noise wise on track. Silent was about 90db at 5000rpm ... Very quiet.
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Old 04-05-2017, 21:24   #4
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What about a kakimoto 92z ? only 92db
I have one and its a nice bit of kit other than where it joins to decat which is tapered to 2.75''
Sounds nice when giving it some
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Old 05-05-2017, 01:45   #5
adamfitz
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I have a hks silent hipower on my 2.3l evolution 6. I have a silence ctec Decat and had this tested at Bedford autodrome at 94db static and 84db drive by. I feel it's a little more restrictive thand what I had before, however it's a sacrifice to make to get on circuit!
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Old 05-05-2017, 06:43   #6
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Russ Fellows everyday of the week. Very competitively priced, full stainless and simply opt for the quieter version. Plenty are running this system both on and off track.

http://www.lancerregister.com/showthread.php?t=403032
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Old 14-05-2017, 13:56   #7
MrBlobby
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As above. I have a Evo 5 with a decat Russ Fellows and its 99BD at 4k RPM when I get noise tested.
Perfect exhaust.
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Old 12-08-2017, 18:07   #8
Bennetts101
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Thanks for all your input, ended up going for a mystery system, unsure of the make as it has no markings whatsoever only a date stamp (2007 I think it was).
Its a 3 inch system, awesome build quality and welds, sounds just right not too loud at all.

20170616_210138 by Tom Farrar-Bennetts, on Flickr

20170601_205009 by Tom Farrar-Bennetts, on Flickr
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Old 12-08-2017, 18:39   #9
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I have a kakimoto regu-r which I would highly recommend.
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