fastnfurious Posted April 27, 2011 Share Posted April 27, 2011 (edited) Getting sick and tired running at only 0.8bar of boost, so ordered the Hallman Pro RX manual boost controller kit and set it to run at "1.15bar firm" now. No fuel-cut so far... oh yesss! This super cool gadget comes pre-installed with ceramic ball (instead of heavier metal ball) and light spring (for finer boost tuning) with a separate heavy spring for higher boost application. Took the limited edition Gunmetal Grey unit to match the color of my Supra. Also bought 2 packs of 4mm and 6mm Samco Sport silicone vacuum hoses (3m each pack) to replace most (if not all) of the old and hardened rubber hoses before it blows up during high boost operation. Edited April 27, 2011 by fastnfurious (see edit history) Quote Link to comment Share on other sites More sharing options...
fastnfurious Posted April 27, 2011 Author Share Posted April 27, 2011 (edited) Spent the whole day replacing the old rubber hoses, some are just so bloody hard to remove and need to splice then pry them off (as shown in the pixs)... WTF! Took this opportunity to DIY fix the turbo pressure sensor as I spotted some sticky stuff surrounding the port. Cleaned it up thoroughly with WD40 and few sharp-end toothpicks, then dry off the lubricant before applying the windscreen silicone sealant to shield the PCB assembly. Tested it and seems to work fine... hopefully! Also installed the Hallman MBC (according to the installation instructions supplied) using the bracket supplied (some modifications required in order to secure it on the shock mounting bolt) and set the boost to 1.15bar after few hot laps. The good news is, Hallman Pro RX MBC really hold the boost firm and no fuel-cut so far... thank God! Questions: Should I replace the rubber hoses on the vacuum canister as well? I assume 6mm silicone hoses will fit? Edited April 27, 2011 by fastnfurious (see edit history) Quote Link to comment Share on other sites More sharing options...
Thorin Posted April 27, 2011 Share Posted April 27, 2011 I've been meaning to replace my old vacuum hoses for ages. Does 4mm and 6mm sizes cover everything? Quote Link to comment Share on other sites More sharing options...
Nic Posted April 27, 2011 Share Posted April 27, 2011 You will definitely get fuel cut above 1.0bar without an FCD fitted. If the gauge is indicating 1.15bar either it has an FCD fitted or the boost gauge isn't accurate. Quote Link to comment Share on other sites More sharing options...
fastnfurious Posted April 27, 2011 Author Share Posted April 27, 2011 (edited) @Michael: yupp, 4mm and 6mm cover most of them. @Nic: no FCD being installed and it's a Defi digital boost gauge mate. could it be UK-spec only fuel-cut at 1.2bar? oh boy... now i'm worried... Edited April 27, 2011 by fastnfurious (see edit history) Quote Link to comment Share on other sites More sharing options...
Nic Posted April 28, 2011 Share Posted April 28, 2011 @Nic: no FCD being installed and it's a Defi digital boost gauge mate. could it be UK-spec only fuel-cut at 1.2bar? oh boy... now i'm worried... I'm not as familiar with the UK spec Supra but I *think* the fuel cut is also at 1.0bar, someone else may be able to confirm. Quote Link to comment Share on other sites More sharing options...
fastnfurious Posted April 28, 2011 Author Share Posted April 28, 2011 okie dok... lemme do some search in this forum... thanks Nic! Quote Link to comment Share on other sites More sharing options...
ManwithSupra Posted April 29, 2011 Share Posted April 29, 2011 Fuel cut comes in at 1bar, so sounds like the gauge is slightly out, who makes it? Also have you done the other bpu mods such as fuel pump and colder plugs, probably best if you haven't. Quote Link to comment Share on other sites More sharing options...
fastnfurious Posted April 29, 2011 Author Share Posted April 29, 2011 using Defi boost gauge and it has been accurate all these while. fuel pump is stock UK-spec and plugs are Denso Iridium which is a range colder. also fitted K&N drop-in element and Blitz Nur Spec R full catback exhaust kit with custom 3" downpipe (cat removed). Quote Link to comment Share on other sites More sharing options...
JustGav Posted April 29, 2011 Share Posted April 29, 2011 Surprised no-one has spotted this earlier.... You shouldn't use manual boost controllers, they are just bleed valves and aren't really the way forward. Far better off spending the money on a proper controller. Quote Link to comment Share on other sites More sharing options...
fastnfurious Posted April 29, 2011 Author Share Posted April 29, 2011 (edited) *ahemm* this Hallman Pro RX kit is not a conventional bleed valve actually... it's using ceramic ball + light spring design, so not venting the excess air to atmosphere unlike typical bleed valve. check this out... and this one too, MBC vs EBC on a STi... btw, i believe most electronic boost controllers are basically using the same ball-n-spring design concept + electronic control for auto climate compensation + scramble mode. Edited April 29, 2011 by fastnfurious (see edit history) Quote Link to comment Share on other sites More sharing options...
Mistermann Posted July 11, 2011 Share Posted July 11, 2011 The MBC isn't too bad - you don't get the "gain" feature that seems like such good fun on an EBC and its is difficult to manage it however they do fine until such time that an EBC can be purchased. Its only the bleed valve type that is a complete waste of time. It sounds to me like you have a FCD installed (previous owner?) ....suprised its not kicking in at 1 bar!! Quote Link to comment Share on other sites More sharing options...
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