[Dinan_Engineering]

     Featured on BIMMERPOST.com

Part Number(s): D440-0200 & D440-0200-W

Applications:

• 2023-2025 BMW G87 M2
• 2021-2025 BMW G80 M3
• 2021-2025 BMW G82/G83 M4
• 2020-2024 BMW F97 X3M
• 2020-2025 BMW F98 X4M

Product Page(s) / Pricing:

• Dinan S58 PCU (Limited Warranty) - Click HERE
• Dinan S58 PCU (Factory Matching Warranty) - Click HERE

Release Date: Available Now!

Description: Developed wholly from the ground up, the Dinan Power Control Unit (PCU) is an evolutionary step in Dinan in-line tuning modules based off over a decade of lessons learned in the category. At its core the PCU is similar to its precursors and installs in between select sensors and the ECU, adjusting these signals in order to achieve increased performance the stock programming is unable to approach. However, what sets the PCU apart is its integration into more than just the fundamental boost sensors but also additional connections -- inclusive of OBDII. The result is a more capable system that can do so much more than just increase power. Live monitoring of vehicle health via logging, customizable gauges, and code reading/clearing, among others, are now possible ensuring a seamless tuning experience even a novice can be comfortable with.

The Dinan PCU is controlled by a free Bluetooth app, available for both iOS and Android, and is home to all the potent features the device offers. Equipped with 5 different pre-set performance levels, in addition to stock, you can choose to select your desired output and enjoy more power for a true install and forget experience, or you can opt to engage in the more advanced features at your fingertips. Boost by gear customization, as an example, allows you to limit power delivery as you see fit in lower gears ensuring optimum traction and a perfect launch. Where the PCU shines however is in data acquisition and monitoring that gives insight into the vehicles overall health and makes certain your tuned vehicle is always running at peak potential.

Safety and reliability have been cornerstones of the Dinan brand for generations and not only does the Dinan PCU not hinder any factory safeguards or emissions controls but incorporates its own safeties as well. Going one step beyond our own internal protections, the PCU also grants the end user the ability to monitor up to 20 different engine parameters in real time via customizable in-app gauges for verification of worry-free operation. Those same parameters can also be logged/viewed in app (or exported to CSV) for further scrutiny if desired.

All told, the Dinan PCU delivers more power and more features with improved reliability and drivability than ever offered before. Performance without sacrifice is alive and well!

Features/Benefits:

• More Power: Max gains between +61-67 HP and +57-73 lb-ft TRQ (Wheel); +70-76 HP and +61-77 lb-ft TRQ (Crank), depending on application
• Bluetooth connectivity and control via free iOS or Android PCU apps
• Multiple power levels, plus stock, to choose from
• Designed for peak performance utilizing pump gas fueling; 91 octane tuning (levels 1-3), and 93 octane tuning (Levels 4-5)
• Improves power and torque across the entire RPM range
• Customizable in-app gauges
• Real-time logging up to 20 (16 max at one time) parameters courtesy of CAN/OBDII integration and the supplied PCU app
• Logs can be viewed directly in the PCU app or exported/emailed as a CSV file for more detailed scrutiny
• Boost by gear user customization to reduce unwanted wheel spin in lower gears
• Read and clear fault codes as well as check emissions readiness
• Retains all factory safeguards and works flawlessly with onboard emissions controls
• Unaffected by factory updates
• Plug-and-play installation
• Unplug and go back to stock at any time or transfer the unit (Not VIN locked)
• Designed, developed and manufactured entirely in the USA

*SKU Variations / Warranty: The Dinan S58 PCU is available with a standard 2-YR product only warranty (Dinan S58 PCU – D440-0200) or a factory matching 4-YR/50k mile warranty (Dinan+ S58 PCU – D440-0200-W) that covers both consequential damages as well as labor reimbursement. Functionally, the units are identical but carry different warranty terms. In the case of the factory matching warranty Dinan+ PCU, the warranty ONLY applies to the first VIN the unit is installed on. Successive VIN’s will not be granted warranty coverage from Dinan.











Install Video:

[mike@x-ph.com]

[Orange fever]

Oh nice finally works on 2025 M2's - Will add to my wishlist

[ScottyRyan2019]

Very nice! 👍

[mike@x-ph.com]

Originally Posted by Orange fever

Oh nice finally works on 2025 M2's - Will add to my wishlist

if you try it, please post a review

[BroDoze]

Very, very interested.

Dinan_Engineering can you please post some 91 octane dynos or at least numbers? I’m stuck on CO front-range 91 octane.

Mike I may be hitting you up soon.

I’ve talked with Dinan about their older piggyback solution and they answered a lot of questions I had around 91oct and high-altitude. Very helpful CS. Way easier to talk to and get ahold of than the BT guys.

Also, Dinan, can you explain the differences between this new PCU solution and your older piggyback solution?

[Trkmnstr]

I’m assuming the only difference between this new unit and the old one is the ability to data log?

[Dinan_Engineering]

Originally Posted by BroDoze

Very, very interested.

Dinan_Engineering can you please post some 91 octane dynos or at least numbers? I’m stuck on CO front-range 91 octane.

Mike I may be hitting you up soon.

I’ve talked with Dinan about their older piggyback solution and they answered a lot of questions I had around 91oct and high-altitude. Very helpful CS. Way easier to talk to and get ahold of than the BT guys.

Also, Dinan, can you explain the differences between this new PCU solution and your older piggyback solution?

Originally Posted by Trkmnstr

I’m assuming the only difference between this new unit and the old one is the ability to data log?

Had a pair of cars at the Ogden, UT location during development so that is probably the best comparison you are going to get in terms of 91 and at altitude. Only have the summarized data though which is below. Level 3 is the max level you would want to run with 91 octane and is shown below whereas level 4/5 are run with 93.



Again, data above is at altitude in Utah with 91 or 93 octane on a Superflow dyno with different vehicles then what was used and shown in the charts in the original post that were done here in Alabama (sea level) with 93 on a Mustang dyno.

As far as differences between the PCU and the prior DINANTRONICS X -- they 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.

[IanH]

Originally Posted by Dinan_Engineering

As far as differences between the PCU and the prior DINANTRONICS X -- they 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.

Is the B58 version of this tuner next in line?

[Dinan_Engineering]

Originally Posted by IanH

Is the B58 version of this tuner next in line?

2025+ LCI2 M340i/M440i's w/ the updated B58 harness and the S68 Engine (G9x M5) are the next targets. Going backwards to previous engines/models is always possible but really is dependent on demand/popularity.

[Trkmnstr]

Originally Posted by Dinan_Engineering

Had a pair of cars at the Ogden, UT location during development so that is probably the best comparison you are going to get in terms of 91 and at altitude. Only have the summarized data though which is below. Level 3 is the max level you would want to run with 91 octane and is shown below whereas level 4/5 are run with 93.

Attachment 3640852

Again, data above is at altitude in Utah with 91 or 93 octane on a Superflow dyno with different vehicles then what was used and shown in the charts in the original post that were done here in Alabama (sea level) with 93 on a Mustang dyno.

As far as differences between the PCU and the prior DINANTRONICS X — they 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.

I’m sold!

[BroDoze]

Thanks Dinan_Engineering . Couple more questions:

1. Is the G87 boost-limited in the lower gears at all with the stock tune?
2. With my 2025, would it be safe to say I’ll see higher HP&TQ numbers than those 91 oct cars shown? The 2024 M2 you show looks to be a manual, whereas mines an auto, so I’m sure my TQ will be significantly higher. I’m wondering if the higher base numbers of the 2025 LCI stock tune will yield higher numbers than prior years, using the PCU.

Thanks!

[DrewNewM2]

This looks like a great option for decent power increase with peace of mind with warranty. Could run this for a few years and see where it goes with updates, hopefully eventually E85 Compatibility and then switch to an unlock after warranty and when you get bored of the power need need more which always happens. Maybe unlocks become possible state side in the next few years?

I have/had multiple modified Subarus which are custom flash tuned (Cobb) and a Bronco that has a Ford Performance tune which is also a flash tune. This would be my first piggyback type tuner. I do like that you can adjust the power delivery in lower gears for traction.

I see these appear to be tested on completely stock cars. Would you get any power differences with downpipes and /or intake?

[Dinan_Engineering]

Originally Posted by BroDoze

Thanks Dinan_Engineering . Couple more questions:

1. Is the G87 boost-limited in the lower gears at all with the stock tune?
2. With my 2025, would it be safe to say I’ll see higher HP&TQ numbers than those 91 oct cars shown? The 2024 M2 you show looks to be a manual, whereas mines an auto, so I’m sure my TQ will be significantly higher. I’m wondering if the higher base numbers of the 2025 LCI stock tune will yield higher numbers than prior years, using the PCU.

Thanks!

Would be the same general HP. Torque would be a bit higher given the higher baseline but would be the M3C 91 data.

Originally Posted by DrewNewM2

This looks like a great option for decent power increase with peace of mind with warranty. Could run this for a few years and see where it goes with updates, hopefully eventually E85 Compatibility and then switch to an unlock after warranty and when you get bored of the power need need more which always happens. Maybe unlocks become possible state side in the next few years?

I have/had multiple modified Subarus which are custom flash tuned (Cobb) and a Bronco that has a Ford Performance tune which is also a flash tune. This would be my first piggyback type tuner. I do like that you can adjust the power delivery in lower gears for traction.

I see these appear to be tested on completely stock cars. Would you get any power differences with downpipes and /or intake?

Likley pick up a bit on the DP's (10-15) although you would be fighting against the associated CEL as we would not permanently eliminate that (can clear the code but it will just come back). Being a public company we do not do any testing with parts that compromise legality (emissions included). Would also be no additional power benefit with the intake as the stock intake flows more than enough to support well over these power levels.

[DrewNewM2]

Originally Posted by Dinan_Engineering

Would be the same general HP. Torque would be a bit higher given the higher baseline but would be the M3C 91 data.



Likley pick up a bit on the DP's (10-15) although you would be fighting against the associated CEL as we would not permanently eliminate that (can clear the code but it will just come back). Being a public company we do not do any testing with parts that compromise legality (emissions included). Would also be no additional power benefit with the intake as the stock intake flows more than enough to support well over these power levels.

Thanks. If I had one of the few catted downpipes on the market that don’t cause CEL, I wouldn’t get a CEL from adding the Dinan unit correct?

[mike@x-ph.com]

Originally Posted by DrewNewM2

Thanks. If I had one of the few catted downpipes on the market that don’t cause CEL, I wouldn’t get a CEL from adding the Dinan unit correct?

Correct

[DrewNewM2]

Originally Posted by mike@x-ph.com

Correct

Thanks! Figured that… just wanted to confirm.

[BroDoze]

YEAH BUDDY

[997CABOVA]

Originally Posted by BroDoze

YEAH BUDDY

Niceeee
Keep us in the loop

[SpaceGhost]

Originally Posted by BroDoze

YEAH BUDDY

Any plans to dyno before and after? Would be great to see real world numbers....

Anyone ever had to use the Dinan warranty? Curious if it is legit or just a marketing ploy.

[fanofbmwe46]

Interested in some real life reviews of this

[mike@x-ph.com]

Originally Posted by fanofbmwe46

Interested in some real life reviews of this

We sold a few since release, so far ,no complaints

this tune is becoming of the top ones im recommending to my customers, especially the ones that dont want a complicated setup and wont use E85