You can see the mods I have in my sig.... At around 104,000 my torque converter started slipping so took it to the dealer and had it replaced. It's been two weeks and this one is slipping and making the trans over heat therefore going into limp mode. I'm not to the point of buying a good aftermarket torque converter so I thought about buying a line pressure booster. I've had the H&S overdrive software for about 15,000 miles now also. I wondered which booster is better.... Sonnax or BD-Power and can I use one of these with the overdrive software?