Jellybean Posted January 10, 2013 Share Posted January 10, 2013 Is the Hi Power Silent and the SS Hiper Muffler the same exhaust ; they have the same part number: 31019-AT005 Just don't what to order the wrong exhaust, the shop said "SS Hiper Muffler" but they have the same part number: 31019-AT005 thanks Quote Link to comment Share on other sites More sharing options...
Dan_Turism0 Posted January 10, 2013 Share Posted January 10, 2013 they are not the same exhaust Quote Link to comment Share on other sites More sharing options...
Nic Posted January 10, 2013 Share Posted January 10, 2013 (edited) HKS USA - which is no longer trading - used the name Hiper for their exhausts. HKS Japan use the name Silent Hi-Power. HKS USA exhausts had different part numbers to HKS Japan and the exhaust designs were different. 31019-AT005 is the correct part number for the HKS (Japan) Silent Hi-Power for the Supra. Edited January 10, 2013 by Nic (see edit history) Quote Link to comment Share on other sites More sharing options...
Jellybean Posted January 10, 2013 Author Share Posted January 10, 2013 HKS USA - which is no longer trading - used the name Hiper for their exhausts. HKS Japan use the name Silent Hi-Power. HKS USA exhausts had different part numbers to HKS Japan and the exhaust designs were different. 31019-AT005 is the correct part number for the HKS (Japan) Silent Hi-Power for the Supra. thanks Nic, found that when I googled it; they both looked the same but called hiper muffler in the US! Surprised it is a hell of a lot cheaper to get it here versus the UK! Murraymotorsport again ! Quote Link to comment Share on other sites More sharing options...
Jellybean Posted January 10, 2013 Author Share Posted January 10, 2013 One more q, the decat pipes the supra are mainly 2.5 inch ; should you be running 3 inch pipes? I think the his comes with a 2.5 to 3 inch adapter? Quote Link to comment Share on other sites More sharing options...
Nic Posted January 10, 2013 Share Posted January 10, 2013 One more q, the decat pipes the supra are mainly 2.5 inch ; should you be running 3 inch pipes? I think the his comes with a 2.5 to 3 inch adapter? With the j-spec stock turbos it doesn't really make any difference as you need to fit a restrictor ring either way. The flange on the exhaust is the same whichever size you go with. Quote Link to comment Share on other sites More sharing options...
Jellybean Posted January 10, 2013 Author Share Posted January 10, 2013 Thanks Nic Quote Link to comment Share on other sites More sharing options...
Jellybean Posted January 14, 2013 Author Share Posted January 14, 2013 (edited) I cant find any information on the HKS decat pipe (AKA Mid-pipe) (Other than the Part Number-- HKS-3103-RT006) is this 3" or 2.5"? Better getting the Blitz midpipe over this one because it is larger and 100% stainless steel? All these Mid-pipes should mate up to the HKS Slient hi power system? Edited January 14, 2013 by Jellybean (see edit history) Quote Link to comment Share on other sites More sharing options...
Nic Posted January 14, 2013 Share Posted January 14, 2013 HKS 2nd decat pipe is diameter 75mm http://www.hks-power.co.jp/product_search/product/10 I'd go with whichever is the cheapest, both use the standard flanges. Quote Link to comment Share on other sites More sharing options...
Jellybean Posted January 14, 2013 Author Share Posted January 14, 2013 Thanks Nic! Quote Link to comment Share on other sites More sharing options...
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