Have a few questions regarding a nagging issue I have had for years with my SVO. I currently am running the following engine mods to the car done about 6 years ago:
6K on rebuild, stock pistons, crank, etc. 70K on motor
Every nut, bolt, component in the entire engine bay was also cleaned, and/or blasted and repainted at this time
Ported/polished iron head with big valves 2.02/1.68 I think
Ranger Roller cam
Garret GT25/40R turbo
SS Rod's header/3" downpipe/Dynomax Turbo's
Tial 38mm Wastegate with open dump
Greddy BOV
Greddy Profec B electronic WG controller
Spearco FMIC
Custom Moates chip running 190lph pump and 55lb injectors
I orginally ran the stock turbo with the wastegate controlled by a cheapie manual controller, and left the BCS wiring and hoses intact. I then upgraded about 6-7 years ago to the above setup. I guess I did not think/know to remove the stock BCS and hoses when I put everything else in. I have never really gotten the wastegate to work, it never seems to really control the turbo(i.e. limit boost at set levels) and it seems almost as if there is no wastegate control at times. It will easily go to 20psi and I have always limited it by my right foot, to mean I have always have to lift way before the 5K rpm mark under hard accel. I have gotten the overboost light more times than I can remember and backfires/pops and high boost can occur. While killing time at work today I started looking into the BCS and am I correct that it should be diconnected? If so do I remove it entirely? Or do I just unplug it? And what about the vacuum lines? Is my car in effect not controlled at all by the wastegate and has that explained why is runs the way it has all these years. I have chased what I thought was improper WG springs and BOV settings for some time with no real change. I am finally able to devote some time to proper tuning of this car and it has been in the garage more in the past 4 years than not. I can try and send some pics of the setup if anyone would like to see them.