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      09-24-2023, 03:43 PM   #6
ZedEx
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Drives: 2023 BMW M3 Competition xDrive
Join Date: Mar 2009
Location: Wilmington, NC

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Quote:
Originally Posted by Sbm007 View Post
Wow that's crazy for 93 on JB4! Curious to hear what settings you are running on XHP Stage 3 - also are you using Drag Mode in XHP?
That's another thing I learned: JB4 cars have way different limitations for drag race mode than flash-tuned cars. Below 27psi and drag race mode reduced ET by .1s repeatably. Above 27psi, and it resulted in consistent shifting issues that worsened as temperatures dropped, as the car was making more power. The car became unusable beyond 27psi on drag race mode. The 9.99s run was done on Stage-3 with no other options.
__________________
- 2023 BMW M3 Competition xDrive - locked/unflashed ECU on JB4: 9.68s at 140.13mph on the street
- 2015 Nissan GT-R NISMO No. 48 - 100% stock
- 2000 Acura Integra Type-R No. 686 - owned since 2006, fully restored
- 2018 Toyota Tacoma TRD Off-Road - daily driver and soft roader
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