titec2

I had this post in the suspension forum but I did not get very many responces I hope you guys do not mind me reposting in this forum. I am having a problem with my civic hb. Let me give you a little back ground on the car. It is 92 hb it has a jdm GSR swap and a Jackson supercharger. The transmission is a usdm type r with no grinds or other obvious problems. I have H&R coilovers on all 4 corners. The car is lowered about 1 1/2" below stock.
The problem that I am having is a power on pull to the right and a power off pull to the left. I have checked the easy stuff like tire pressure and have had it aligned in the last month. The car does not pull left or right as long as you are holding a steady speed. Do any of you have any suggestions as to what may be causing this problem?