Quote:
Originally Posted by recompile
And just to close the loop on this one in case anyone's curious.
A 1.2mm pill (3/64") solved my problem. Now 0% = 20psi and 70% = 34psi.
|
I would not have been able to give you a solution, but I knew the cause when I read your first post (just read it now, not earlier and keeping secrets
) The forge WG actuator (I use one as well on my Ralliart) is set up to give aprox 20 psi of boost in conjunction with the stock boost control setup that is zeroed out, without tweaking the ROM to get the boost you want I suspect that the ECU steps in to limit over boosting... I don't know because I never tried to use it without someone tweaking the ECU. They know what car it is going on, and set it up accordingly.
On the other hand, the Tial WG (I had a 38mm Tial on my Red EVO VIII RS) is set up so spring pressure is accurate with an un-restricted boost source connected directly to the actuation nipple. They have no clue what car it is going on, so it is configured for a "direct" boost source.
A hack job option instead of changing boost pills would have been to go with a lighter spring in the Tial... they have a HUGE range of optional springs you can purchase. The problem with a lighter spring is that when you reach boost pressure aprox 2.5x spring pressure (depending on the A/R of your turbine housing) the wastegate starts to open just from the exhaust pressure on the valve. Your solution was the better choice by far
Later,
Keith
