inverted tie rod end or Roll centre adjuster?

[SHRUKA]

This is an Internet forum, you're not going to get professional assistance.

The DC5/EP3 front suspension is unstable for a number of reasons, it has a lot of bump steer, high SAI, not a lot of caster and usually scrub radius issues with aftermarket wheels fitted. Your alignment sheet shows that your SAI is 1.6° different left to right which to me is enough to indicate there may be some damage to the suspension, and this difference in SAI will result in a difference in scrub radius from left to right and may be contributing to the pulling and steering kickback you're experiencing. I'd look carefully for any damage to the suspension.

What size and offset are your front wheels?

To improve the behaviour you're describing you have to increase the stability of the front steering system. There's a number of obvious ways to improve this:

- Add positive caster
- Less negative camber
- Reduced SAI
- Reduced scrub radius
- Improve the bump steer behaviour further. The J's RCA have probably improved this slightly, but measurement and then tie rod attachment point modifications are the only way to do it precisely. Due to the rack location the DC5/EP3 will always have bad bump steer behaviour over a large range of suspension movement.

I appreciate your suggestions/feedbacks as I really want to get rid of this heavy pulling on the steering.

In saying that, I will do the followings you mentioned to improve it.
But in order to add more positive caster, reducing SAI/scrub radius, what would be the first step?

I can adjust the camber at the front as Im running BC BR coilovers but not the rears (no rear camber arms) meaning I would have to raise the car but I like how it is sitting at the moment.

At the front, Im running 17x9 +35 (225/45).


ALSO
I've read and got told, with Tegiwa Steering rack raisers, it will correct the angle of the tie rods bringing it back to OEM angle which is a reason to this steering pulling issue but I'm not 100%. Don't hear many EP3R use them.