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Commander Lex 02-28-2002, 09:52 AM Maybe some of you guys can help me. I have a 95 200sx Se-R with a 91 de motor Turbo (t28, corba maf, 50lb injectors, port polish, s3 cams, and dual boost controller.) I adjusted the boost controller for 10lbs and the other setting for 15 and I am only getting 5lbs. I had the ecu sent to jwt too but still low boost. I can not figure this problem out. Please HELP Alex TurbochargedSER 02-28-2002, 10:47 AM Make sure the dip switches on the back of your boost controller is set for internal wastegate! Are all of your vacuum hoses zip tied? Makes sure you don't have any vacuum leaks! Commander Lex 02-28-2002, 11:00 AM My boost controller is set for internal wastegate the boost gauge is reading at 20psi of vacumm so I don't think I have any leaks. Also at ideal my fuel pressure is at 32psi then goes to 43psi at wot and thats it. ? Alex nsracer 02-28-2002, 11:28 AM Are you running the 4 bar program? What kind of regulator are you running. Commander Lex 02-28-2002, 12:00 PM I am running the 3bar program with the stock regulator Alex nsracer 02-28-2002, 12:30 PM Strange. You are reading static pressure, right? (fuel pressure with the vacuum line disconnected from the regulator) Like Louis said, make sure all your hoses are zip tied and check for small cracks/tears; you may not see them at idle or on decel, but under boost a small tear/crack can turn into a big hole and start bleeding off boost... Commander Lex 02-28-2002, 12:34 PM True I'll check that tonight Low612 03-01-2002, 01:28 AM Also you may want to check any gain switches if there are any on your controller. Increasing gain will increas boost signal, giving more boost. This is something i overlooked on my Blitz before. Good Luck Larry TurbochargedSER 03-01-2002, 09:07 AM I forgot to mention this, check the adjustment nut on the internal wastegate! It should be adjustable up to 9 psi. ClassicSE-R 03-01-2002, 10:13 AM Originally posted by Commander Lex My boost controller is set for internal wastegate the boost gauge is reading at 20psi of vacumm so I don't think I have any leaks. Also at ideal my fuel pressure is at 32psi then goes to 43psi at wot and thats it. ? Something is screwed up with the way you have your hoses plumbed. If you have your fuel pressure set for 3 bar (43.5 psi) with the vacuum sensor disconneted, and you are showing 20 in HG vacuum at idle (about 9.8 psi), then you should have 33.7 psi of fuel pressure at idle. OK, that sounds about right. Now, if your boost gauge is reading 5 psi, you should be getting 48.5 psi of fuel pressure. But you say you're only getting 43 psi of fuel pressure at WOT. Sounds like your fuel pressure regulator is not seeing proper intake manifold boost. At the very least, it seems that your boost gauge and your fuel pressure regulator aren't tied in to the same source for intake manifold pressure. You need to fix that. Do not use the vacuum port located on the underside of the throttle body for any sort of vacuum signal associated with turbo function (boost gauge, BOV, wastegate signal, nothing). This is an attenuated vacuum signal that is cut off with the throttle closed. This is used in the EGR system. Be carefull to make sure all of your signal lines are using the right pressure source. Commander Lex 03-01-2002, 01:36 PM Thanks Rob that is some really good advice. I'll try that when I get home. Thank man!! Alex | ||