Hi Guys,
im going through an issue that im having for a year now. Now let me start by saying that the lower control arm is new OEM, knuckly is new OEM,, tie rods are new OEM, knuckle lower bushing is new OEM, full race traction bars, ksport upper control arms, running MT 225/50/15 street radials, build tranny with Quaife LSD, 5.9 DSS axles, new front hub bearings, new 70 grade tranny/engine mount bushings, new steering rack energy hyper flex busings. Now my issue is that i cant get the car to drive in a straight line. its seems the car cant find a centerlized point. This only happens when boost kicks in and car tends to go right left right left when full boost kicks in. im running a GT35R on a built B18c. The car is scary even when tires are warmed up and have good grip on 4th gear!

Could it be a steering rack issue? the steering rack is very old and is a power steering type with the power steering pump disconnected? what would you guys recommend in doing here? to be honest i dont want power steering i like the steering being heavy and think its safer in higher speed and even when boost kicks in

 

your toe is not set correctly, this can cause your car to hunt and dart, then when power is applied will cause the car to be almost uncontrollable. In other words take the car to a really good shop that drives the car, not just set to spec and send you in your way.
Regards
Dave