Hi all.
Having an issue with the 356A Speedster. As with most rear-engine cars, I’ve taken the steps to soften front springs/ARB’s and tighten the back.
The Speedster seems to fish-tail around most corners. I’ve countered most of it with rear downforce but still can’t tune it out to a satisfactory level.
Any thoughts? I’ve tried C, B and A class (A class is insane…don’t bother with that class). Thought it was a power/throttle problem but seems that there’s more issues.
I have yet to drive that car but how much power does yours have?
Not much…175 HP. Car is only 1399 lbs but it’s still not that bad. Currently running a B class build. It’s not very fast in C class. I don’t race D or E class (too slow for me. lol).
Sure! Thanks for offering.
Edit: I should mention, this is a corner exit/throttle issue.
Build as follows:
Forza front and back aero, rear bumper removed.
Race tires
Front/rear tire widths maxed (trying to build a small track car)
Cragar Boneville Series 391 rims, 17" rim size (I do this for stability…and to add style. ha ha)
Street Transmission, Race driveline, Race Diff
Race Brakes, Race springs/dampers, Race anti-roll bars (front/back), Race Weight reduction.
Sport Filter, Race Intake, Race Carburetor, Race Ignition, Race Exhaust, Street Cam, Race Valves, Race Block, Sport Pistons, Sport Oil
Open source tune (current, not the same as the shared one I have):
Tires: 27.5,27.5
No gear changes available
Chamber: 2.0,2.0 (don’t usually set it this way but other settings made it worse)
Toe: 0,0
Front Caster: 5.0 (no affect from adjustment)
Anti-roll bars: 5.89,35.86 (adjusted to the extreme due to understeer despite high handling rating)
Springs: 315.4, 459.2 (rear) (again, understeer countering)
Ride Height: 6.7,6.7 (tried a rake (higher back than front) no affect).
Rebound: 7.0, 7.8 (not my usual settings for cars)
Bump: 2.0, 2.1
Downforce: 70, 200 (rear increased to max for grip)
Braking: 65%, 199 % (running abs so I just max it. Would re-tune for no ABS obviously)
Diff: 20%, 20% (increased diff settings for both front and rear had little to no affect whatsoever. (???))
Will have a quick look when I get home if I’m not too tired, can you post your build??
I didn’t build it, but that diff setup seems way too low for me. I’d be looking more on the 60+ acc and 25-40 dec settings.
Actually the defult differential setup in FM6 seems to be favoring much more agressive diff setup than any previous FM game. and my RWD cars that used to run below 30acc diff setup always in FM4 and 5, now run on 60-80 acc diff setup.
My observation as well, default diff values (70/35) are a good starting point in FM6.
@Audible: try reversing the springs and dampers/rebound (rear softer than front) and dial up accel
Yup and yup…tried both. Dialing up acc diff makes this car drift even more and I’m barely touching the throttle. Reversing springs and dampers is how I started. MASSIVE understeer is the result. You guys should try the build. This car’s default understeer…even with the high handling rating (5.9!)…makes it feel like a brick
Tried that…as above…makes the car worse. Rebound and compression changes do practically nothing for this car. I think tuning is just broken, for the most part, on this car.
I totally agree! The problem is reversing/lowering the rear spring, with or without the rear anti-roll bar lowered, makes the car drift like mad in B class. I reversed the spring/anti-roll bar setting to counter the worse understeer.
In the end, I went with an extreme chamber: 3.5 front/3.0 rear and 0.2 degree rear toe (corner grip). This slightly improved the car but not much. This thing is just strange in this game.
Yup…that’s just it…I would agree but I tried 75% acc with 20% dec with no affect. I’ve noticed that some DLC cars can’t be tuned properly…or it seems that tuning has less of an affect.
Try 4.6/4.1 rebound and 5.7/6.4 compression and drop the rear 3 clicks below the front (6.7/6.4)
If that’s an improvement then boost the acel lock to about 82, decel to 36, should help stability. If that improves it further double the front ARB and bring the rear down to 27.6ish
Should clear the skittish behaviour.
Let me know how you get on.
its what your talking about is the lowers pi porche its upping the ride height on the rear and stiffening the suspension.
Still havn’t built the car as you did. I tried to push it up to B class when it came out. but I came in to conclusion that the car is bad in high classes, and I ended up in D class with it.
The main issues with this car are
-Wheelies
-Understeer
-Oversteer
the car is doing at least 2 of these in any case in higer classes. it’s almost like Fiat 595 Abarth
In entry it never turns, on exit it possibly lift’s the front up. and then the rear goes, or then the front won’t lift and the rear just snaps loose.
I’d like to say that try lower classes.
I’m going to have a look at it when I get back from work. It’s going to be another Ferarri 458 job by the sounds of it…
Oh trust me, the 458 is a pleasure compared to this.595 abarth is pretty close how the porsche drives.
This pic is B class with street tires, 
GetPhoto8.ashx by MrPomomies, on Flickr
It turns in, pops a wheelie, and then the rear goes… Granted that the picture is taken before I got it as good as I was able to. but the handling didn’t really change at all.
Boom 1 lap in to testing the gorgeous 356 and I’ve found the problem. Working to fix it, will update as soon as I’ve tuned this beastie.
Ok then chaps, try this one on for size… Be aware, do not poke it with a stick because when it lets go it’s gone. BUT it does have a much improved lateral grip rating over your the OP tune.
Search either my GT or RBBTS 356 in the description.
Feedback would be appreciated.
I got one in a class shared, not hooked up but very driable.
Good job rabbit, it’s bit more drivable than what I got out of it. But it’s still way too oversteery for my liking.
Overall, it’s good for what it is, but overall it’s rather horrible.
Yeah I don’t like it either. Nice to look at but would I race it??? Nope.
Heh, thanks guys, for trying this thing. It’s good to know I’m not the only one who thinks this car is more for drifting than racing. lol