04-18-2024, 12:21 AM | #1 |
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For a tune done at the dealership and warranted between Carbahn and Thompson BMW I can’t complain! After running several pulls on roads and tracks the average results from stocked to tuned are in:
0-60 from 3.1 to 2.7 on 93. Best run 2.6 on 100 octane 1/4 mile from 11.1 to 10.7 on 93 octane 1/8 mile from 7.4 to 6.87 on 93 octane Car is running all weather continentals, 20” wheels front and back, AA downpipe, Valvetronic exhaust, CSF cooling with manifold, Mishimoto Charge pipe, Carbahn stage 2 tune with warranty. After warranty, all this needs is flex fuel, port injection, tranny with torque converter and the car is in the mid 9s. No doubt!!! |
04-18-2024, 08:17 AM | #2 |
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Nice setup, but one thing that should be corrected is that downpipe… the second turbo pipe should be piped into the main one at a 45° minimum and not just 90° straight in. 🤦*♂️ Seems like a novice mistake to make. Actually a more ideal design would be to bring both into a smooth Y and pipe into one.
Take a look at a Tomei R34 downpipe to get an idea of how a proper straight 6 (non sequential) twins downpipe should be for most efficient flow and power. |
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04-18-2024, 08:30 AM | #3 |
i can haz horsepowr ??
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Coming along nicely! I'm not sure how the CarBahn tune/CarBahn in general works with flex fuel and how it would interact with port injection/any port controller.. but I'd definitely ask them before going buying anything just in case.
Enjoy her!
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04-18-2024, 08:52 AM | #4 |
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^^^ They do, but the limits of their warrantied version of their tune is where it’s at. I don’t believe it’s a carte blanche for unrestricted mods. I could be wrong on this, but this is generally how these tuners work in terms of the warrantied staged tunes… some will even make a little less power, but that’s generally because it’s a 91 octane mapping as opposed to 93.
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04-18-2024, 10:12 AM | #5 |
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Thank you for sharing
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https://x-ph.com/sale/ Phone number 702-494-9435 |
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04-18-2024, 02:49 PM | #6 |
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Nice gains!
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04-18-2024, 07:07 PM | #8 | |
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2) Very nice carbahn gains, but I gotta think you smoke that warranty if you go way past, port injection, etc. Hasn't car Carbahn fussed about different downpipes vs stock? (And yeah - that car looks fire....) |
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04-19-2024, 01:29 AM | #9 | |
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Thank you. |
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04-19-2024, 01:41 AM | #10 | |
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I will be in the shop adding a few upgrades so we will take a look to see if a 45 degree angle is possible. We have scanners since I own a mechanical contracting business and can run the models. I agree decreasing static presssure on airflow is the way to go but without reconfiguring everything sometimes that’s not possible. Again, thanks for the suggestions. |
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04-19-2024, 01:50 AM | #11 | |
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If the goal is to track the car then there will always be someone there that will smoke you. For those of us that focus more on street racing a 10s car with a strong 60-130 time will put you in the cool kids club. With that said the Carbahn tune takes you out of the stock category and makes you significantly faster at all speeds. It does it without over stressing your stock parts. Like I said earlier, I’m happy with it!!! |
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04-19-2024, 01:54 AM | #12 | |
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Thank you!! Carbahn approved the downpipes, flipped on the flex fuel and port injection. That will not happen under their warranty. Waiting to see what their stage 3 tune and what Steve Dinan has up his sleeve. 100 WHP and a high 10s car is not more appealing than the BM3 and JP4 capabilities. If he gets more aggressive and unleashes the S58 a little more he will make up the warranty costs with the excess profit from more sales. |
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04-19-2024, 01:56 AM | #13 |
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