Scott Posted June 4, 2009 Share Posted June 4, 2009 so i should be seeing a relatively strong amount of positive pressure once accelerating? im getting 1-2 psi under heavy throttle use where my foot is almost reaching the floor. im not sure why, i hope its the gauge but could it be a bad tune? i havent gotten the car tuned so its stock but i have replaced the turbos? that could be the problem? i do admit the original pair of turbos did feel to pull harder. Sounds like you don't have any boost due to something not working correctly buddy. Have a look at the technical section for a thread about the sequential system. There is a fair bit of trouble shooting info in there Quote Link to comment Share on other sites More sharing options...
Digsy Posted June 4, 2009 Share Posted June 4, 2009 Surely the figure would depend on how restrictive the filter is? Or is the 0.3 a measurement without the filter in place? Yes, and also on the amount of air flowing through it. 2kPa is a good working figure for a complete intake system including the filter. Quote Link to comment Share on other sites More sharing options...
sup_dawgTT Posted June 4, 2009 Author Share Posted June 4, 2009 cheers Scott M, im fairly confident my sequential system is functioning as i had it looked at not so long ago by the service center and he owns a supra as well so i trust him. everything is running properly and has been refreshed. i checked the lines no pinches or leaks and iv made sure the hoses are on tight. the gauge will be looked at, failing that ill go send the car in for another check. But has this happened t o anyone before? i knew i should not have cheaped out on the gauge it came up at a steal though. Quote Link to comment Share on other sites More sharing options...
sup_dawgTT Posted June 5, 2009 Author Share Posted June 5, 2009 hey, just an update. I took the gauge back and tested another gauge and still the same reading of 1-2 psi under full boost from the first turbo so its something mechanical as Scott M said. ill head over to the tech section, but thank you guys very much for the help Quote Link to comment Share on other sites More sharing options...
Digsy Posted June 5, 2009 Share Posted June 5, 2009 Check out that T peice. I cant't think why you would have what appears to be a one way valve in the part that you have connected your gauge to. Quote Link to comment Share on other sites More sharing options...
Marmoot Posted June 5, 2009 Share Posted June 5, 2009 hey, just an update. I took the gauge back and tested another gauge and still the same reading of 1-2 psi under full boost from the first turbo so its something mechanical as Scott M said. ill head over to the tech section, but thank you guys very much for the help Sent you a PM. I don't mind having a look and compare it to my supra to see if we can figure out something. Quote Link to comment Share on other sites More sharing options...
sup_dawgTT Posted June 5, 2009 Author Share Posted June 5, 2009 To Digsy - o really? is that maybe my problem? what would taking it out achieve? any risks? To Marmoot - cheers that would help immensely mate much appreciated i shot you a PM as well Quote Link to comment Share on other sites More sharing options...
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