The best thing would be for you to experience it for yourself. Take the Gr. 4 WRX to Dragon Trail - Gardens. Run a few laps with 5 to the rear and then a few laps with 5 to the front. Take note in turn 1 and in the cuadruple-apex right hander how differently the car handles under acceleration. Especially in turn 1, you can tell with BB all the way forward you can really power out of that turn, but with it all the way to the back you need to take a sharper line to avoid understeering off the track. BB should only affect understeer and oversteer under braking. It should not have any influence whatsoever under acceleration beyond a split-second weight-shift effect when lifting off the brake pedal.
Being that the WRX is so bad on tire wear, believe me, I spent hours during the FIA seasons trying to find a way to get the car to be fast while at the same time easy on tires. That's how I discovered this, and it applies to all cars, though in the RWDs it is less pronounced.
Aight, imma try this when I get back home
Im driving 1:35:627 at Yamagiwa II for Race B in the Jaguar and I'm working hard. Can you look at my driving here and see if I can improve somewhere?
My struggles are in turn 2 and 3 as well as in the last turn were I have not decided how tight I have to go.
I use km/h, so it'll be a bit hard to give specific advice. But I noticed that when you brake, you keep a bit of gas. While this could be helpful in balancing the car, especially if it's loose under braking, try to lift completely when you're still braking in a straight line. It would help shorten your braking distances a bit more, which as it stands is already pretty good. You've got an idea of where to brake already, you juet gotta shorten it a little bit more. You can still apply a bit of gas when braking, though you'll want to do it when you're already starting to turn
For turns 1-3, your exits were very conservative. You can definitely power out earlier than you currently are. In T4 (the hairpin) however, the opposite happens. You didn't overcook your braking point, but rather you lifted the brakes a little too early and powered down before the apex. That gave you a really wide exit and you weren't able to fully apply the throttle until well after the exit of the turn
For Turns 5-7, I honestly don't know how well you did there, since while it does look messy, you maintained a consistent speed and didn't seem to lose much time from the wiggles. In terms of km/h, I lift a bit just before Turn 5, hitting the apex at ~210 km/h, where I then brake and try to maintain a speed in between 140-145km/h through turns 6-7. If your mph speed matches that, then I think you've got it right
For Turn 8, the entry speed was too fast, compromising the exit. Rather than braking in the middle of the turn, brake ever so slightly on the part where you lift, and then gently drop your speed to what's the mph equivalent of 180 km/h. From there the corner will widen up, and you can power out while still being able to tighten your line and hit that late apex.
I can't give advice after that, sorry
I'm struggling in that sector as well
It was still a Dr.A to DR.D room, at least all SR.S this time. Not that that was any better. First couple laps were a mess. Then at the end I get accused of punting someone off. I check my footage, turns out the guy accusing me, bumped me off the road in T3, coming from behind bumped me twice into the sand. I never hit anyone, I take pride in avoiding people! I passed him in lap 1 when he was way out in T2, probably bumped off by another Canadian. They always get me in trouble.
. It's also very handy as a last ditch effort to stay on the track being able to drop gears quickly. I used to race RC buggies, so using the sticks for throttle/braking and steering was normal for me. R/L 2 for gear changes is much less of a strain on my fingers than R/L 1, which is what I used on the PS2.
. At one stage I was up to P5, but that was because cars were coming off the track. Sadly I'm too cautious in certain places because I've come off in previous races there. My guess is I'm not making full use of the aero. I'd see a decent gap behind me, then watch as it starts to shrink with the passing laps. I think I only saw two orange SRs, and didn't incur any SR's that carried a time penalty. I did pick up a couple of track penalties (I think I was the only one who was trying to stick to the track boundaries who got any 
.).
.
.
