08-20-2019, 04:40 AM | #1 |
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Downpipe question
Hi guys
I recently acquired a new 2019 430i. Running BM3 stage 1 right now but considering installing an ER DP and going stage 2 OTS map. I am aware that this will usually void my warranty, and in case of any engine issues, dealer will not cover. My question: if I change the downpipe and have CEL removed through BM3, will they notice the change when going for regular Service?
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2019 F36 430i | BM3 Stage 2 | ER Catless DP
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08-20-2019, 07:22 AM | #2 | |
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08-20-2019, 08:11 AM | #4 |
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Regular service shouldn't be affected. Now if you have to replace your transmission or turbo then they will check your DME and see that the car was tuned regardless of flashing back to stock. Regular service is going to be fine, but your warranty is already voided anyway
EDIT: also if you're running stage two you'll want to look into an intercooler and charge pipe upgrade. Not sure if you have them already but those are necessary for stage 2
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08-20-2019, 08:39 AM | #5 | |
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johnung4531.00 |
08-20-2019, 08:53 AM | #6 |
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Thanks for the clarifications.
Indeed I am aware that the warranty is already void by the books. But that said, only in the case where my turbo or engine failed for xxx reasons, and they're going to dig deep on what happened. I also don't want to make it obvious that I've flashed etc. Thus my question of would they notice the DP on regular service. I hold a pretty good relationship with my dealer here so for minor issues where I can claim warranty, I can slide my way through. About stage 2: I've posted on another thread earlier asking clarification. I've read that the B48 doesn't need or have(?) a FMIC, and on stock it will be fine. And, that CP issues have rarely been reported on B48 engine or even on n20/26, it was very specific to the N55. That said, the CP is on my bucket list, but I am not considering it as "must have" for stage 2, perhaps in 2-3 months time.
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08-20-2019, 01:32 PM | #7 | |
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08-21-2019, 06:41 PM | #9 | |
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Stage 1 93 octane: up to 16% HP / 26% TQ Stage 1 E30 octane: up to 20% HP / 28% TQ
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08-23-2019, 05:27 AM | #11 | |
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Did you mean to use "%"? Maybe you did. I'm just used to reading gains represented as like +14hp (like in JB4 literature) +14% on say a 250hp engine would be +35hp. Please clarify. The use of % just has me confused. Thanks. |
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08-23-2019, 05:43 AM | #12 |
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He did intend to use %. This is how PTF represents their tunes. It's a bit more accurate and honest as each n20, n55, s55 etc will vary slightly. Dyno's will also vary. To give a definitive number like "+35hp" would be a bit disingenuous.
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08-23-2019, 06:12 AM | #13 | |
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08-23-2019, 09:33 AM | #14 |
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08-29-2019, 02:25 PM | #16 |
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Indeed ... Bad Dyno run, the guy didn't pull to neutral and upshifted.
I'm going for a new run this weekend, and hopefully a much better one, and smoother. Will also do stock vs stage 1 etc. Apologies for that.
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