leebottrill Posted September 9, 2014 Share Posted September 9, 2014 In October I'm going to have my zed upreved. I'm also going to put a cobra exhaust and y pipe on. Horsham developments also suggested fitting some HFC's. My question is firstly are they worth the money(not sure of their cost) for a very small gain? Secondly does fitting these cause problems with MOT emissions? I'm not looking for huge mods. My question is would a cobra and an uprev be worth doing? I going with cobra as I like the sound/price/reviews! They did recommend miltek as well. Quote Link to comment Share on other sites More sharing options...
Tinyflier Posted September 9, 2014 Share Posted September 9, 2014 Miltek with standard CATs will give you a whisper queit exhaust note. With HFCs the exhaust note is totally transformed and gives (IMHO) the ideal note/balance. Quiet at motorway cruise, purposeful on tickover and great on acceleration. There can be emission problems unless you get the CATS properly warmed up first, but they do pass the MOT without major issues (well mine has twice and others will comment appropriately!). David 1 Quote Link to comment Share on other sites More sharing options...
leebottrill Posted September 11, 2014 Author Share Posted September 11, 2014 Tbh the exhausts all sound the same to me lol. I'm going to stick with my standard cats and just go for a bbox and ypipe with cobra! Anyone got a cobra and been happy/unhappy? Quote Link to comment Share on other sites More sharing options...
Rock_Steady Posted September 11, 2014 Share Posted September 11, 2014 (edited) if you get HFCs you'll pass an MOT according to many on this forum, who have put HFCs on their zeds, and had MOTs with successful results. Will you get more power? NO, if you haven't gone through the process of a REVUP re-map. What most do, is put on a plenum spacer, HFCs, new exhaust system, Velocity stacker in the cold air box with a new filter. With these modifications combined and a REVUP re-map, you can get significant gains for an N/A engine. Some people get an increase of 15hp, if you're super lucky you'll get 25-30hp. Yes the car sounds different with HFCs i.e. louder. I have done all of the above except the re-map. The Cobra exhuast sounds fantastic iMO, especially with the HFCs. Hope this helps. Edited September 11, 2014 by Rock_Steady 1 Quote Link to comment Share on other sites More sharing options...
longsh07 Posted September 11, 2014 Share Posted September 11, 2014 Not had my Berk HFC's on long enough for MOT time to roll around but I've heard good things about Cobra HFCs. Berks apparently need a bit of warming up but otherwise should pass fine Quote Link to comment Share on other sites More sharing options...
WhackyWill Posted September 11, 2014 Share Posted September 11, 2014 Tbh the exhausts all sound the same to me lol. I'm going to stick with my standard cats and just go for a bbox and ypipe with cobra! Anyone got a cobra and been happy/unhappy? I just fitted a Cobra Sport back box with a custom made resonate centre pipe and standards cats, sounds really good maybe a bit quiet, my upgrade the cats in the future, but happy for now. :thumbs: 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.