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BMW M2 Forums 2023+ (G87) Engine, Exhaust, Drivetrain, Tuning Modifications

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      01-24-2025, 02:59 PM   #23
BroDoze
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Another solid reason to recommend DINAN over others is for high-altitude, 91oct customers. This is a niche DINAN has tons of intimate experience with. Others don’t focus in this area because it’s a smaller portion of their customer base.
Tuning can be finicky/challenging/dangerous up here with that combo running generic OTS 91oct tunes.
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      01-26-2025, 10:22 PM   #24
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So what are the differences in the Dinan PCU and the Dinan DINANTRONICS X? Running E10 with MAD intake, Milltek downpipes, and Milltek x-pipe midpipe. I which Dinan unit is preferred? How does the Dinan differ from the JB4? Is running E85, or a mixture, preferred with these tunes? I searched but what I seem to find is old data or not for the G87.
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      01-27-2025, 09:03 AM   #25
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Quote:
Originally Posted by MikeyP View Post
So what are the differences in the Dinan PCU and the Dinan DINANTRONICS X? Running E10 with MAD intake, Milltek downpipes, and Milltek x-pipe midpipe. I which Dinan unit is preferred? How does the Dinan differ from the JB4? Is running E85, or a mixture, preferred with these tunes? I searched but what I seem to find is old data or not for the G87.
The PCU and the prior DINANTRONICS X elicit roughly the same power gains as they are reliant on the same levers to pull being a piggyback system. Where the PCU differs is in additional features given the CAN/OBDII integration. This allows logging, in app gauges, the ability to read/clear DTC's, monitoring of emissions readiness and the ability to tweak boost by gear if you are having issue with wheel spin. All features that are not possible on the X. The other large difference is the PCU offers a variant that carries the Dinan factory matching warranty (4yr/50k) that covers parts/labor/etc. whereas the X is only offered with the limited product only 1-year warranty.

Neither unit is going to completely remove the CEL associated with DP's (assuming catless) nor are they designed to handle ethanol mixtures. If you are after support for ethanol mixes or supplemental fueling (meth, etc) you would want an alternative product.
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      01-27-2025, 09:43 AM   #26
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2025 BMW G87 M2  [10.00]
2025 BMW G87 M2  [9.90]
Will these be available in California?
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      01-27-2025, 10:46 AM   #27
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Quote:
Originally Posted by Dinan_Engineering View Post
The PCU and the prior DINANTRONICS X elicit roughly the same power gains as they are reliant on the same levers to pull being a piggyback system. Where the PCU differs is in additional features given the CAN/OBDII integration. This allows logging, in app gauges, the ability to read/clear DTC's, monitoring of emissions readiness and the ability to tweak boost by gear if you are having issue with wheel spin. All features that are not possible on the X. The other large difference is the PCU offers a variant that carries the Dinan factory matching warranty (4yr/50k) that covers parts/labor/etc. whereas the X is only offered with the limited product only 1-year warranty.

Neither unit is going to completely remove the CEL associated with DP's (assuming catless) nor are they designed to handle ethanol mixtures. If you are after support for ethanol mixes or supplemental fueling (meth, etc) you would want an alternative product.
Great! Thanks for the info. I dont have the DPs yet and I was looking at getting the Milltek Hi-Flow Sports Cat DP's. Im assuming these DP's will not cause a CEL? I plan on running E10 or lower ethanol. If these DP' and PCU dont cause a CEL, it looks like this is the setup I will be going with. Mike @ EPH, Ill be in touch soon!!
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      01-27-2025, 11:27 AM   #28
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Will these be available in California?
PCU doesnt currently have a CARB EO but that is the desire. Remains to be seen how quick that process will take though given some of the long waits we currently see across the brands. We have little concern of it passing once it does get to that point thoguh given our own in house emissions testing for EPA requirements.

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Originally Posted by MikeyP View Post
Great! Thanks for the info. I dont have the DPs yet and I was looking at getting the Milltek Hi-Flow Sports Cat DP's. Im assuming these DP's will not cause a CEL? I plan on running E10 or lower ethanol. If these DP' and PCU dont cause a CEL, it looks like this is the setup I will be going with. Mike @ EPH, Ill be in touch soon!!
Typically sport/hi-flow cats don't cause CEL's but I would confirm with Milltek to be sure. Not something we ever test given our stance with emissions and being a public company.
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      01-28-2025, 01:08 AM   #29
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YEAH BUDDY
Let's see some be4 and after Dyno numbers ///
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      01-28-2025, 11:42 AM   #30
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I understand the unit can be removed before smogging, but when do you expect to have CARB approval? These crazy cops here in S. Cali want to inspect your car everytime they pull you over now.
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      01-28-2025, 11:57 AM   #31
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I understand the unit can be removed before smogging, but when do you expect to have CARB approval? These crazy cops here in S. Cali want to inspect your car everytime they pull you over now.
Not even going to speculate as we have had an EO get pushed through in 6 months (albeit that was a fluke) and others that took years because of constantly shifting requirements. All I can really say is the process has been started.
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