mellonman Posted January 10, 2011 Share Posted January 10, 2011 hi all i have a bpu jspec with no cats trd replica exhaust with 1.2 rr walbro fuel pump hks fcd hks front mount apexi bov apexi avcr blits panel filter stage 3 hybrids (fitted thinking turbos was the problem) aem fic (fitted after problem) aem afr ( fitted after problem ) been having a problem with not making full boost only getting 0.75 with second turbo sometimes a little more but has been getting worse first turbo making 0.65,but with the boost controler turning them up, just want to find out if doing it this way would increase the inlet temps? if it does effect it it used to make over 1bar some time ago but with the avcr fitted never noticed a problem as avcr was compensating, i have checked the exhaust for obstructions i replaced vacuum pipes i think i got them all when putting preasure into vacuum hoses it come back into the intake system,NOT SURE IF THATS BECAUSE OF THE AVCR? could this be the preasure tank valve? where do i go from here checking this fault, any help greatfully recived Quote Link to comment Share on other sites More sharing options...
SupraShaun Posted January 10, 2011 Share Posted January 10, 2011 Have you tested all your VSV's? Quote Link to comment Share on other sites More sharing options...
Nic Posted January 10, 2011 Share Posted January 10, 2011 Was the wastegate machined bigger when the turbos were rebuilt? Have you tried running without the restrictor ring to see what boost it makes? Quote Link to comment Share on other sites More sharing options...
mellonman Posted January 10, 2011 Author Share Posted January 10, 2011 i have not tested all the vsv how do you do that? the waste gates was not machined bigger i dont think i havent tried running with out the restistor ring as once was good so there must be another problem but still would uping the boost via avcr increase inlet temps this sequencial set up is confusing to me Quote Link to comment Share on other sites More sharing options...
SupraShaun Posted January 10, 2011 Share Posted January 10, 2011 Scroll to the bottom of the page: http://www.max-boost.co.uk/max-boost/supra/turbo.htm Quote Link to comment Share on other sites More sharing options...
mellonman Posted January 10, 2011 Author Share Posted January 10, 2011 thanks for that shaun i will give that ago tonight . anyone spread some light on the inlet temp situation Quote Link to comment Share on other sites More sharing options...
supra matt Posted January 10, 2011 Share Posted January 10, 2011 Sound to me like you might have a leaky bov mate as I've seen this a fue times on stock ones , that or you have a split hose in one of the vac lines . Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted January 10, 2011 Share Posted January 10, 2011 If you have checked everything else, then i would be looking at a boost leak, small split in a hose that opens up under boost, BOV as Matt said, or my favorite wold be the Apexi solenoid, hear of these causing problems before. Quote Link to comment Share on other sites More sharing options...
mellonman Posted January 10, 2011 Author Share Posted January 10, 2011 Sound to me like you might have a leaky bov mate as I've seen this a fue times on stock ones , that or you have a split hose in one of the vac lines . i have the apexi bov and is fully adjustable as stock was leaking so its not that Quote Link to comment Share on other sites More sharing options...
mellonman Posted January 10, 2011 Author Share Posted January 10, 2011 If you have checked everything else, then i would be looking at a boost leak, small split in a hose that opens up under boost, BOV as Matt said, or my favorite wold be the Apexi solenoid, hear of these causing problems before. the apexi avcr solenoid leaking? intresting surely if that was leaking it would make more boost? Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted January 10, 2011 Share Posted January 10, 2011 the apexi avcr solenoid leaking? intresting surely if that was leaking it would make more boost? I didn't say anything about it leaking, but they have been known to go faulty, as in not cycling as they should, and so cause boost problems, if you can find nothing else wrong, then it would be worth removing it and let it run actuator pressure, or temporally fit a bleed valve. Quote Link to comment Share on other sites More sharing options...
mellonman Posted January 10, 2011 Author Share Posted January 10, 2011 yeah rick i was thinking the same thing plumbing back to facorty setting and seeing what i get then Quote Link to comment Share on other sites More sharing options...
mellonman Posted January 10, 2011 Author Share Posted January 10, 2011 (edited) Okay the results are in and for all thows that had there money on Spilt vac = you where wrong Vsv = you where wrong Bov = you where wrong For all thows that had it down to the switched off avcr solonoid that should be doing abosolutly nothing you win, tricky ricky is the champion you sir are a star Edited January 10, 2011 by mellonman (see edit history) Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted January 10, 2011 Share Posted January 10, 2011 Glad you got it sorted mate:) Quote Link to comment Share on other sites More sharing options...
mellonman Posted January 10, 2011 Author Share Posted January 10, 2011 thanks again would never of thought that solenoid Quote Link to comment Share on other sites More sharing options...
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