boromfccup Posted December 11, 2006 Share Posted December 11, 2006 sorry cant get my head around this do i de cat front and back or just 1. does the restrictor ring keep it from over boosting because of the cats out, if i get a ebc will this allow me to go from the boost of the ristritor ring but only upwards not down ive a jspec car. can i have some of your expert advice please Quote Link to comment Share on other sites More sharing options...
wkdtime Posted December 11, 2006 Share Posted December 11, 2006 To go fully BPU, its reccomended that you take out both cats. Once fuly decatted, JDM TT's will in 'most' cases overboost due to runaway boost as the wastegates are easily overwhelmed due to their size. A restrictor ring is mated with 'Usually' the second decat and the exhaust mid pipe, the ring helps create more back pressure therefor 'limiting' the boost depending on the size of the ring. An EBC is normally used in conjunction with a small ring (E.g 1.0Bar) to help maintain the boost at any desired level above your base boost level i.e 1.0Bar (Set by ring) and to also help minimise boost spikes. Quote Link to comment Share on other sites More sharing options...
Mas Posted December 11, 2006 Share Posted December 11, 2006 thats pretty much all bout it what wkdtime said, in an easy way to say you need - full decat and RR - fcd -colder plugs -after market exhaust (if you havent got one yet) - uprated fuel pump (recommended) - boost gauge then any thing you add to this list is a + to BPU Hope I didnt miss anything though Quote Link to comment Share on other sites More sharing options...
boromfccup Posted December 11, 2006 Author Share Posted December 11, 2006 thaks how much on average for the decat pipes Quote Link to comment Share on other sites More sharing options...
Mas Posted December 12, 2006 Share Posted December 12, 2006 depends who you get them from but they usually start from £200 inc the restrictor ring Quote Link to comment Share on other sites More sharing options...
boromfccup Posted December 12, 2006 Author Share Posted December 12, 2006 is that for one Quote Link to comment Share on other sites More sharing options...
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