Hi guys, Am new to the mitsubishi scene. Recently sold my skyline gtr for a rare R1 motorbike and cash, And have now managed to pick up a rare jap import galant sport gt 2.0L twin turbo ( All in dark blue instead of that nasty white and blue!) , The vehicle has a boost tap fitted and boost gauge, Also the previous owner has drilled big holes into the air box as a cheap method of more induction i suppose. I know how much manual boost controllers via a boost tap is dispised against due to the dangers of boost spike etc. But considering i picked this car up for £400 for a twin turbo with only 45000miles on the clock i dont really fancy paying for a fancy greddy boost controller. Anyway, to get down to the point of me posting in this section is, With this boost tap fully unscrewed to its max, I am boosting at around 12psi, Ive read elsewhere that you can boost to 15psi at a max before the turbos start panting for air. Im unable to even get above 12. I know i have no boost leaks etc. Even removed the tap so it was not restricted but still only boosting to 12. Ive drawn a little diagram to show how its piped up, As im not clued up on this engine im unsure as to if its piped up correctly or not
http://i25.photobucket.com/albums/c8.../turbodiag.jpg
There is a 4way plastic pipe joiner (shown in pic), with one of the ports on it blocked off, The T piece tap governs the leak for the actuators to allow more boost into fooling the actuators of the signal pressure, Now My problem is, with the tap fully open, Im only getting 12psi of boost, Does it look as tho its piped up correctly from looking at this crude picture ive drawn( Note when i screw the tap in, It does reduce my boost). Or could it be restricted by those tiny metal pipes that run above the throttle body which connect to rubber pipes heading to the actuators?, If this is the case would buying some decent pipes to run directly from both actuators to the Tap and 4way pipe joiner whilst bypassing those small metal pipes above throttle body increase the boost? As im wondering if my only restriction right now is down to them?.
Thanks in advance
Craig