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      06-23-2023, 05:45 PM   #1
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2023 BMW M4 xd  [10.00]
"No Prep" Drag racing tomorrow...

Heading to a track rental tomorrow where they won't be laying down prep, it's mainly street cars just doing fun runs.

Any suggestions for traction? I had a challenge last time completely stock, I have a custom tune now so I imagine it's not going to be any easier.

M4 xdrive:
I have XHP Stage 3 in Drag Mode (high pedal) v1.4

M1: programmed to RWD traction off for burnout
- Do I just lay on the brake and gas?

M2: programmed to Sport plus, S3, comfort suspension
I plan on using launch control

Anything I'm missing? I'll be getting videos and will share after.
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      06-23-2023, 07:35 PM   #2
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Yes don’t go too heavy on the brakes, you will find the car does a burnout easily modulate the throttle don’t bounce off the limiter. Use LC have fun good luck!
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      06-25-2023, 02:29 PM   #3
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Meh… couldn’t get a good launch but still did well… 10.2 hitting the brakes before the end

https://youtu.be/HIRuTK3LZI4
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      06-27-2023, 05:19 PM   #4
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Decent. What octane gas?
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      06-27-2023, 05:41 PM   #5
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xhp on 3, line pressure bump, and drag mode .

4wd regular not sport, D3 trans, drive logic on bar 3 and start in manual mode from second. Power brake to about 2800-3k rpms and get a little spool, let it go and when you get to about 5k rpms in 2nd after launch slap the shifter over to drive and let it shift. (you can try all that with launch control as well vs power braking and see which one your car likes) drop some psi out of the tires too but not a ton if you're on stock rims and tires
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      06-27-2023, 07:17 PM   #6
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Originally Posted by Hit_Apex View Post
Decent. What octane gas?
E56
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      06-27-2023, 07:54 PM   #7
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Nice! What mods do you have other than the XHP?
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      06-27-2023, 09:14 PM   #8
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Originally Posted by Jasinedward View Post
Nice! What mods do you have other than the XHP?
MAD catless DPs
AA resonated Midpipe
BMS drop in filters
BM3 flex fuel kit
Paul Johnson flex fuel tune

That’s it. Every penny has gone in to making it faster 😊
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      07-07-2023, 04:19 PM   #9
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Quote:
Originally Posted by 2Times View Post
MAD catless DPs
AA resonated Midpipe
BMS drop in filters
BM3 flex fuel kit
Paul Johnson flex fuel tune

That’s it. Every penny has gone in to making it faster 😊
Should definitely be able to hit 9's with those mods... I've the same mods (mst intakes) I'm still debating on which tuner to go with right now. Maybe sent some data logs of your runs to PJ for another revision?
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      07-07-2023, 05:22 PM   #10
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Originally Posted by timmyg789 View Post
Should definitely be able to hit 9's with those mods... I've the same mods (mst intakes) I'm still debating on which tuner to go with right now. Maybe sent some data logs of your runs to PJ for another revision?
I'm not worried about it... it was 100 degrees out and I hit the brakes before the end (you can see the G's drop on the draggy at the end)... Bad launches was still hitting 138 trap. It's def a 9 second car.
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