JackyBoi Posted January 13, 2016 Share Posted January 13, 2016 (edited) I'm currently looking at removing my HKS turbos, manifolds, wastegates and down pipes, and replacing with a single turbo, manifold, single wastegate and down pipe. My question is can I do all of this without a remap, or once the swap is done, is it absolutely necessary to take it to a dyno and have it mapped properly? My max boost at the moment is mapped to 1.5 bar, at around 560hp, controlled by a Syvecs S6. Thanks guys! Edited January 13, 2016 by JackyBoi (see edit history) Quote Link to comment Share on other sites More sharing options...
Mike2JZ Posted January 13, 2016 Share Posted January 13, 2016 If you want the optimum map for your new setup then yes you will need to get it remapped. Quote Link to comment Share on other sites More sharing options...
Thorin Posted January 13, 2016 Share Posted January 13, 2016 The boost characteristics will be completely different, of course you'll need a remap. Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted January 13, 2016 Share Posted January 13, 2016 As above. No point risking a £5k engine rebuild over the cost of a mapping session Quote Link to comment Share on other sites More sharing options...
Luxluc Posted January 13, 2016 Share Posted January 13, 2016 You need a remap EVERY TIME you change a (major) component! Quote Link to comment Share on other sites More sharing options...
JackyBoi Posted January 13, 2016 Author Share Posted January 13, 2016 Okay thanks guys. Was wondering because I've heard of a few people who have run the new turbo on wastegate boost only whilst 'waiting' or 'saving' for a remap. I was going to do the same, but after the advice above, I'll get it all done in one hit I suppose the boost difference between big twins and a small single would be huge anyway. Thanks again! Quote Link to comment Share on other sites More sharing options...
Style Posted January 13, 2016 Share Posted January 13, 2016 You could probably get away with what you've suggested but you'd have to be near enough off boost at all times as the map will need timing changes etc once the turbo kicks in. A small single will spool a lot quicker than your twins so that would be where things start to go pear shaped. Quote Link to comment Share on other sites More sharing options...
jcbt Posted January 13, 2016 Share Posted January 13, 2016 You need a remap EVERY TIME you change a (major) component! Don't we know that to our cost Luc;) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 13, 2016 Share Posted January 13, 2016 Near enough anything will be better than those lag monsters! If I hadn't driven a couple of MKIV's on them I doubt I would have believed how wrong HKS could get turbo matching. Quote Link to comment Share on other sites More sharing options...
Luxluc Posted January 13, 2016 Share Posted January 13, 2016 Don't we know that to our cost Luc;) Absolutely John Quote Link to comment Share on other sites More sharing options...
JackyBoi Posted January 13, 2016 Author Share Posted January 13, 2016 Near enough anything will be better than those lag monsters! If I hadn't driven a couple of MKIV's on them I doubt I would have believed how wrong HKS could get turbo matching. How about an XS kit then? Quote Link to comment Share on other sites More sharing options...
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