First time out with aero

[Fresh1179]

Some very helpful information here for those of us who are taking the dive into aero over the winter. Thanks.


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[bigjae46]

I kinda agree, it's hard to tell which was the biggest impact, but I agree with your comment about feeling like you're really coasting. The combo of weight loss, aero, and a diff really brought the car to life. The diff can't get enough credit, cuz coming out of corners is amazing!

A ZF clutch type diff? That really makes the car much more fun to drive. It really connects the rear wheels to your right foot. I think it also adds a lot of stability when trail braking.


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[sc_tr0jan_m3]

I find myself underdriving the car. It’s ridiculous when I see my buddy wiggling and struggling in a fast sweeper and I’m on his butt just coasting.

I thought the weight loss was more transformative than the aero. I did the aero last.


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I kinda agree, it's hard to tell which was the biggest impact, but I agree with your comment about feeling like you're really coasting. The combo of weight loss, aero, and a diff really brought the car to life. The diff can't get enough credit, cuz coming out of corners is amazing!

[bigjae46]

Holy crap... reporting back after my first day out with full BW splitter/aero setup.

God, the grip is addictive!

It's insane how much it can transform a car and the G's you can pull with the same tires. It's pretty much a night and day difference and within 4 sessions, I was able to beat my previous personal best time by over 4 seconds.

The limit is so high now, it's getting scary... and this is without Hoosiers! lol

I find myself underdriving the car. It’s ridiculous when I see my buddy wiggling and struggling in a fast sweeper and I’m on his butt just coasting.

I thought the weight loss was more transformative than the aero. I did the aero last.


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[sc_tr0jan_m3]

did you do anything else to the car or just the aero? any weight reduction?

I got the full beans TCDesign update. Full cage, full weight loss, diff, 5 speed swap, a crap ton of stuff. I'm now at ~2800 lbs with ~340whp. I need a retune from Epic to fit into TT3 rules, but I have a backup DME for full power mode that can put me in TT2 rules.

[Sergmann]

Holy crap... reporting back after my first day out with full BW splitter/aero setup.

God, the grip is addictive!

It's insane how much it can transform a car and the G's you can pull with the same tires. It's pretty much a night and day difference and within 4 sessions, I was able to beat my previous personal best time by over 4 seconds.

The limit is so high now, it's getting scary... and this is without Hoosiers! lol

did you do anything else to the car or just the aero? any weight reduction?

[sc_tr0jan_m3]

Holy crap... reporting back after my first day out with full BW splitter/aero setup.

God, the grip is addictive!

It's insane how much it can transform a car and the G's you can pull with the same tires. It's pretty much a night and day difference and within 4 sessions, I was able to beat my previous personal best time by over 4 seconds.

The limit is so high now, it's getting scary... and this is without Hoosiers! lol

[jk715]

I have a secondary pump on the left side and I still have to keep the fuel tank over 1/4. I was wondering if I had an issue but that is a good point. I've been up to 1.55g's, typically around 1.3 to 1.4, Got to wonder if there is something else that I need to do.

Secondary pump fixed the fuel starvation for me. Initially, I thought the aero was adding a parachute effect in the rear bumper but it was only occurring on the long right sweeper. Aero adds just enough g's to the turn for fuel starvation to kick in.

[bigjae46]

If your local track has a long right sweeper you might see fuel starvation. One of the first complications after adding aero.


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I have a secondary pump on the left side and I still have to keep the fuel tank over 1/4. I was wondering if I had an issue but that is a good point. I've been up to 1.55g's, typically around 1.3 to 1.4, Got to wonder if there is something else that I need to do.

[jk715]

If your local track has a long right sweeper you might see fuel starvation. One of the first complications after adding aero.


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[sc_tr0jan_m3]

The new ones from BimmerWorld come with the gurney flap.

Cool, good to know. thanks!

[AXDB]

Oh do you know if it was the BimmerWorld wing too? Or a diff manufacturer?


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The new ones from BimmerWorld come with the gurney flap.

[sc_tr0jan_m3]

I bought the car like that. I assume it came with the flap.

Oh do you know if it was the BimmerWorld wing too? Or a diff manufacturer?


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[eacmen]

Did you add a gurney flap at the end of the BE wing or does it come with one already?


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I bought the car like that. I assume it came with the flap.

[sc_tr0jan_m3]

High rise mounts from BW. Since I am doing auto-x this weekend I have it at 10 deg relative to the ground. At the highest setting on the wing.

I have the fan clutch tool that is basically flat tool steel that I tape to the wing with angle finder.

Normally I am at 2-3 deg angle relative to the ground.

Did you add a gurney flap at the end of the BW wing or does it come with one already?


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