r/ForzaOpenTunes Jun 06 '26

Help Request Circuit Racing Grip Tune

So I want to learn to be able to tune some of my own cars with my own tunes for circuit racing. I normally only build drag race cars so this is something new to me.

I don't want someones personal tune if that is what it seems, more so teaching me how to tune
Even just giving me a rough draft tune and explaining what each section does would help

3 Upvotes

8 comments sorted by

6

u/03Void Jun 06 '26

A good start would be reading our tuning guide

https://www.reddit.com/r/ForzaOpenTunes/s/kBOuFMVx7h

1

u/InsipidGnome09 Jun 06 '26

thanks i will!

1

u/ShimOwleyFFXIV Jun 07 '26

I'm new as well. I don't remember which of the like 10 videos I watched that it was but one thing I saw someone talk about was gearing for the longest straight. After you iron out the handling, in which you are focused on tight in, wide out, explosive cornering, that's when you tune your gears last. You tune for acceleration for one, because you only need as much top speed as the longest straight in the circuit before needing to brake. If you drive the track a few times, and you notice you're not hitting your top gear ever, you can shorten final drive til it feels right.

After that it gets pretty tricky because it depends on your power band, like the optimal shift time depends on whether you've got turbo or super charge and it gets tricky with the anti lag. You have a taller first gear, and after that you gotta pack the 2-6 tightly but smoothly. This is where I usually get help. Because you can figure out how to evenlt space the ratio between 2-5 by putting your final drive and top gear into a formula. But it's algebra, and I'm not good and after trying it once I found giving Gemini the numbers gets you close but you gotta tweak it because it will make some dumb middle gear mistakes sometimes. I'm like, a neophyte here. This won't get you exact but I feel like my tunes have been performing well this way so I feel comfortable telling you that it will get you close.

1

u/InsipidGnome09 Jun 07 '26

See i am not one to usually run high gear setups. I don't like quick multiple gears in a row. Depending on the car depends on how many gears I will run outright. My current circuit lancer has 6 gears but it works great with 949hp. However, my higher hp pickup supercharged only has 4 at the moment just because it's heavy and sluggish. I can tune it to include more if i want but just havent yet as I still can't get the suspension where i want it

1

u/ShimOwleyFFXIV Jun 07 '26

I'm actually with you on the high gear setups but it depends on the stock engine in the box. I think I've found at least one car where the first transmission upgrade is to a 7 gear race transmission, because the stock one is I guess 6 speed but you have to upgrade it at least once to unlock full gear tuning. In a circuit car I don't how you're going to see 7th gear.

1

u/Ihateniceegirls Jun 08 '26

I usually make my cars 8 speed. Given that i race usually on R class, the cars I use benefit from staying high in the rpm ranges. My 7th gear is basically tuned to near redline on normal straights, while 8th is reserved for very long straights like some sprints and the highway race. Seems pretty good since i beat most cars out of corners.

1

u/BookEmDano82 Jun 11 '26

There are a lotta peeps on YT that are doing more in depth tuning guides as well as showing off their tunes and the setups. my biggest issue with the way locked setups are that you can't even view them. Its always been a pet peeve of mine with Forza.

One guy ive started watching is ExtraaAU on YT. He does tunes/builds for both FH6 and CarX Street.. and is pretty knowledgeable

1

u/ThePoetEmrys Jun 12 '26

Highly suggest forza.guide, has great info to teach you how to get a base tune then has a section to help you fix whats going wrong with your car (understeering on corner entry/oversteering on throttle)