burgess18 Posted September 5, 2013 Share Posted September 5, 2013 Right my starlet ep82 has a uprated fuel pump an reg, a decat manifold screamer pipe, exhaust system and it rrolld 168bhp I have installed a boost controller an a fuel cut defender every time I put the boost to 1 bar it wont hold a bar it . rises to 1.5 bar or more it's been to a.jap sspeciaist tuning company where I live I have a mate that works their an they thought it was the map senosr I replaced that an it is still doing it its due back their saturday but has anyone had the same problem do I need my wastegate porting? Thanks Quote Link to post Share on other sites
AdamB Posted September 5, 2013 Share Posted September 5, 2013 What boost controller you using? Quote Link to post Share on other sites
burgess18 Posted September 6, 2013 Author Share Posted September 6, 2013 Hks evc mate Quote Link to post Share on other sites
AdamB Posted September 6, 2013 Share Posted September 6, 2013 Who set it up pal? Am not too clued up on the HKS units so not entirely sure how they work, but it could well have something to do with the setup of it. Quote Link to post Share on other sites
burgess18 Posted September 7, 2013 Author Share Posted September 7, 2013 one of the guys at this jap tuning place mate I don't no how to set it up to be fair it just wont hold boost at all Quote Link to post Share on other sites
AdamB Posted September 7, 2013 Share Posted September 7, 2013 Are you still on the standard actuator? That may well be your problem with a weak diaphragm. Quote Link to post Share on other sites
gazza g Posted September 7, 2013 Share Posted September 7, 2013 if the boost is increasing to 1.5 bar either the boost controller isnt set up correctly, the actuator arm on the turbo is sticking or if your using a uprated actuator the base setting (length of the arm) is too short holding the wastegate increasing the pressure. to rule out boost controller take the vacuum pipe from the turbo directly to the actuator, this should run it at its base setting (for uprated one hks ext). on my old Gt i suffered from boost creep but it didnt shoot up that high and i found as i ran higher boost the creep wasnt so bad lol does it hit a bar hold for a few hundred RPM and then steadily increase ? Quote Link to post Share on other sites
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