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celicamad
Forums Junkie

Location:
newcastle
Registered:
June 2002

Re: Found Flow Limit on 1JZ Turbos

Sun, 31 August 2003 00:33

7m-brisbane

ill quote myself

Quote:

however in your case the big increase in flow has found the limit to factory wastegate. even with no controller in place boost is high .( you already know this).no controller can lower the boost more than this

i certainly dont claim my controller can reduce the boost lower than no controller at all

my original post was

Quote:

boost controll is EASILLY fixed my controller will controll the overboost issues( tried and proven) .YO-JIMBO get your arse over my place and ill fit one to your car .we have already proven it works better than the hks electronic controller

The reason the elctronic cant controll boost is because of the way it controlls boost .daves gt4 had the same problem it now holds the same boost (any boost) in all gears .

i have NEVER claimed my controller will fix (wastegate's )problem

try reading what i posted before you get all shirty

how exactly did you test the wastegate ???? at what psi where they fully open .

im not trying to argue here just help .

My rear wastegate actuator was leaking .causing the rear turbo to overboost .power was way way down .0-100 times where back up into the high 5 sec .
boost was set at 16 psi . i replaced the rear actuator and boost fell to 12 psi (with no changes to the boost controller) .i reset the ecu and wound boost up to 16 psi .problem solved 4.69 0-100.with the 6mm bleed valve fitted boost higher in 3rd than other gears .fitted 8mm valve all is good

daves gt4 had similar probs and had an earlier boost controller(of mine) fitted .in 4th gear on a long hill boost went up from 17 to off the gauge .why? the flow limit of the 6mm bleed valve had been reached .we fitted an 8mm valve and it holds exact same boost in all gears

Yo- jimbo yeah matt bring the supra up one day and we will fit the controller .im sure it will fix your prob .however i think andy has a different issue .probably an actuator .(but ive been telling him that for months now)

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