Paul22uk Posted September 2, 2002 Share Posted September 2, 2002 Looking to buy a new exhaust system & mainfold for a 1700 xf what is the best type of mainfold to get 4 to 1 or 4-2-1 ? would it be worth getting a repackable silencer ? if so which one ? where would be the best place to get the system from ? any advice, tips & ideas would be of great help Many thanks Paul Link to comment Share on other sites More sharing options...
Jaseb Posted September 2, 2002 Share Posted September 2, 2002 Paul Can't answer all your questions but would recommend a call to Chris Wheeler at the 7 workshop (I think he's in the contacts list on the home page) he fitted me a rather shiny Tech craft silencer onto my existing down pipes,all in all rather nice - took me down from 104db to 98/99db just in time for a Silverstone evening sesh Oh and he's generally jolly helpful (replaced one of my hood poppers when I happened along for somenew brake pads) and generally quite jolly (just don't mention getting his truck knicked - I think it's still a sore subject) Jason Link to comment Share on other sites More sharing options...
Paul22uk Posted September 2, 2002 Author Share Posted September 2, 2002 thanks jason i'll give chris a go ! any other ideas people espically xf owners? what type of mainfold is besty and were is the best place to get on from ? come on i need to order one this week please help ! Paul Edited by - paul22uk on 3 Sep 2002 09:17:12 Link to comment Share on other sites More sharing options...
Paul22uk Posted September 3, 2002 Author Share Posted September 3, 2002 btt any ideas need to order this week Link to comment Share on other sites More sharing options...
c7kjt Posted September 3, 2002 Share Posted September 3, 2002 Can second comments regarding Chris Wheeler and the Techcraft product. My (limited) understanding is that the difference between 4:2:1 & 4:1 on a standard (sprint or s/sprint) x/flow is that it makes very little difference (possible slight diff in mid range vs. top end). But if you're planning engine upgrades then 4:1 is a must from what I understand. I want to be careful not to generalise 'cos the parameters and complexities of exhaust design (primary length, width etc) mean that you quite simply can't. I changed my 4:2:1 primaries for 4:1 at the same time as I got the Techcraft silencer, Chris also supplied a modified collector to fit one to t'other. Probably not the cheapest but looks the DBs (especially when professionally polished - see my website). Kevin Thomas kevin.thomas@bigfoot.com www.7gallery.co.uk Link to comment Share on other sites More sharing options...
Mark H Posted September 3, 2002 Share Posted September 3, 2002 At our area meet last night AMMO brought along a raceco silencer and i have to say it was a very nicely finished piece of kit (ti, i belive and also in alloy) it may well be worth giving Raceco a call . Ammo may well be worth speaking to himself as he knows all the ins and outs on these Mark Link to comment Share on other sites More sharing options...
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