Keep us updated. I wouldn't have expected that with your coil-overs but it seems with this car, the height affects it too greatly. EasyE's EP3 is pretty low tho and my DC5 is at 4.5" front pinch and 4.75" rear pinch. Tie rod arms are close to perpendicular (forget the exact degree it is off) but jumping into a double wish car made the bumpsteer in the DC5 much more noticeable despite years and years of daily driving and track use w/o complaint.
It's funny...I didn't really notice it too much until 1.) I got to Buttonwillow and felt like I was wrestling a juiced up grizzly bear and 2.) my teammate who has won H1 and run in Speed World Challenge was completely blown away with how he had to fight the car. It's weird, it's not torque steer really, but the car just pulls and fights with every surface discrepancy.
The car is great under trail braking (as long as the braking zone isn't bumpy), and sometimes understeers mid-corner, but is fairly neutral for an FF car...but throttle on corner exit is rough. As much as I'd like to try to get on the throttle early, it's difficult with the understeer on corner exit, so instead I brake incredibly late, upset the car and try to minimize any coasting, thus rotating immediately before understeering.
I'm going to see what I can do to mitigate it, but from what it seems like, it's a bit of a problem that even the top teams had to compromise with to some extent.
While my teammate disagrees that it could be much of a possibility, I do sort of feel like it got worse once I didn't have to adhere to the Redline ride height rule. That said, I watched a bunch of my old videos and I always had a bit of bump steer. Hopefully I can resolve it before Super Lap. The car is pretty dialed in otherwise.
I think the revelation was a result of a decent amount of seat time at a new track that's really smooth (Thunderhill) and then going to a brand new track (Buttonwillow) that I wasn't used to. The bumps, especially in the higher speed stuff, were pretty unsettling when my first time out I was attempting to run close to 2-min.
After the weekend my arms were actually tired...something I've never experienced save for my first karting enduro. Kinda weird.
I'm trying to see if I can get some data from Realtime to see what they did with their RSX (rear suspension nonwithstanding), but so far no luck.
I'm not running any inverted tie rods, but I am running the J's steering arms (tie rods), RCAs and the Racing Gear/J's suspension has the flat, level bracket for the steering arms. I wonder if I need bigger RCA/ball joints to compensate for the lower roll center? Toe is neutral in front, maxxed out in the rear. I just don't know how to measure what the difference would be.