I installed JICs flta2s this week and while driving now under acceleration car twists to right, when coming off throttle it twists back to normal. while driving at a steady speed everthing is normal. I haven't got an alignment yet I want to see if I can fix the problem before I go in for it. wheels are F 18x8 +20 with 235 40 18 and R 18x9.5 +20 with 275 35 18. Tires are slighty tucked in fender wells. Can anybody please give me a lead to the problem?

 

I had a shop install my front springs and I was getting the same issue. Turns out that they didnt tighten the bolt to the lower control arm. Check to make sure you tightened that bolt. Heres the orignal thread with pics.

https://my350z.com/forum/brakes-and-...-nut-pics.html

hope this helps

 

I never loosened those bolts.

 

It was the spring one side was compressed about an inch and the other wasn't. I didn't even think about having to mess with it from the factory. Eveything is working great now. The stiffness isnt bad at all.