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Enthusiast ![]() Joined Jan 10, '11 From Trail BC Currently Offline Reputation: 1 (100%) ![]() |
Hello doctors, get your surgical gloves on, because i need help.....
i have asked this question before with no solutions, so i will try again, maybe someone will pick up something i missed, hopefully!!!!! basically, my 94 celica gt, which i swapped a st205 into, was up and running last may ( 2011 ), ever since then, my boost climbs to around 19-20psi, i have hit fuel cut twice, and smacked my face into the windshield the first time ( seatbelt safety ), ![]() anyways, in order to stop hitting fuel cut, i have to let off around 5500-5700rpms, because im right on 18psi, and dont want to keep hitting fuel cut....cant be good ![]() so heres what ive trouble shooted so far: hooked air compressor up to wastegate with 15psi pressure....opened perfectly, quickly and smoothly have an XS Power DP, checked to make sure the actuator clears the DP flange....it does there is a line that comes off the wastegate and goes behind the bottom of the intake manifold to a sensor called a VSV valve???? i think its called, anyways, hoses are hooked to that and return up front, cant remember where the line goes up front though?? ![]() thats about it, kinda outta ideas I was thinking of purchasing a manuel boost controller, but isnt that for turning up boost, or can you turn down boost as well ( explain please ) If that doesnt work....is there some sort of a bleeder type valve i can buy, to vent some pressure, or does that screw-up vaccum Thanx, hope one or alot of you have an answer to my problem ![]() ![]() |
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Enthusiast ![]() Joined Jan 10, '11 From Trail BC Currently Offline Reputation: 1 (100%) ![]() |
Thank-you everyone, for all of your ideas, I believe Smaay is right, our ST205 engines are prone to boost creep,I was trying to figure out what would be the best to go about it, and didn't want to do any fabricating, or downsize my DP, basically put out money I didn't half too....then it dawned on me, I have a tuned muffler, which I took the silencer out of, and have never ran it on the car I'n the first place, my theory behind this is, this will add some restriction to my fulll 3" system, and make my wastegate vent properly.....i was scared how it would sound with the silencer in, but when i turned key and started her up, i actually like it better then open cannon, it sounds deeper and a throatier pitch, my Blitzz DD BOV is more of a high pitched whistle, and believe it or not, but when you rev it the RPMs raise quicker then before.......want to take it for a rip to see if my wastegate can keep up now, and if my boost has leveled off to a power making stable level. Insurance is off of it right now, and for another 4 months ( Damn Canadian Winters! ) but the roads are dry right now, if nice tomorrow will go down the street n back, see if there is a difference, am very excited, if this works, Smaay, you da man, then Rav Race, I will have to buy a boost controller to up the boost, depending how much I've come down, u have an APEXI right'?
I don't know if I would get electronic, little to much right now, I know they fine tune better then the Manuel ones, but a Manuel will have to suffice, if, the silencer idea works.... ![]() |
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Lo-Fi Version | Time is now: August 21st, 2025 - 12:54 PM |