03-28-2024, 01:25 PM | #1 |
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Drives: '14 BMW 640i Gran Coupe Msport
Join Date: Oct 2020
Location: Northern California
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New headlight: Should I remove tunes?
Hi all,
I have a quick question. My car is at the dealership for a new LED headlight replacement, and the new lamp/modules have to be programmed. The car has a MHD engine tune & a XHP transmission tune. The dealer called me to let me know that programming the headlamp will wipe out the tune. Should I remove the tunes first before the headlight re-programming? According to the dealer, it should not cause any issues, but I want to be safe. Kind regards, Junius |
04-03-2024, 11:02 PM | #3 |
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Im_an_alien is correct, this happened to me last year when I got my M Performance brake coded in. I put in a negative survey and immediately got called by my service advisor who claimed to have no idea it would happen. Getting my DME unlocked again was like $350 I think
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04-04-2024, 03:24 PM | #4 | |
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Quick question, since you got your DME locked and then unlocked...When it's time to smog again, don't you have to relock the DME and go back to stock tune? And do you have to pay to unlock the DME AGAIN? I heard some states are starting to check for tunes and following commiefornia's stupid regulations. |
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04-04-2024, 06:41 PM | #5 | |
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The cars where DME locking is a real problem (Requires bench unlock or similar) likely havent been smogged yet since they arent 8 years old |
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04-04-2024, 07:00 PM | #6 |
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Some people go to extremes and get a clone of their DME. Keep the original and tune the clone, then swap back and forth as circumstances require. I myself looked into cloning my DME, something I may revisit as ICE regulations get tighter in some states
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04-04-2024, 08:47 PM | #7 |
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What's the ballpark pricing for a DME anyways? Haven't heard of that one yet. But in CA, we just assume and prepare for the worse
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04-04-2024, 08:54 PM | #8 |
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They are not too expensive for used ones on eBay, you don't need a new one. The difficult part is finding someone who has the equipment to clone it. You have to send out both of them.
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04-05-2024, 02:04 PM | #9 |
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This doesn't solve the problem of not being able to run certain hardware mods without a tune. i.e., i cant install a HPFP that requires a tune, because i need to drive my car to get a smog check on a non-tuned DME. So even if i have a 2nd non-tuned DME, if i swap that into the car i wouldnt be able to drive it lol
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04-05-2024, 02:26 PM | #10 | |
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But yeah, it's not fool proof. |
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