[BroDoze]

Originally Posted by MikeyP

So I installed the Dinan PCU and I must say that I can definitely feel much stronger pulls. I have done some other modification as well with the PCU, so I can say what it did by itself. I can't seem to find a Dyno in N. Alabama, so we just have to wait for numbers. It was super easy to install but installing the Boost Sensor chewed my arm up like a Pitbull.
I was having a slight "chug" in the power curve, so I reached out to Dinan and they are wonderful to work with. They looked over my logs and reviewed the data and nothing really jumped out. Even though the logs looks okay, they had me return my unit and sent me another one, all within 3 day. I ordered thru XPH, so I had to go through them for the swap. These guys are exceptional too, Mike and the support team got me taken care of.
Just want to say everyone was top notch. The Dinan rep on this forum and Garret at Dinan were extremely helpful.
Also, I have Milltek high-flo cat downpipes and I did not get a CEL. I never got a CEL period.

Thanks for the review. So can you explain what the chug was about?
Was it a defective unit? Did they adjust fuel or something in the maps in the one they sent back to you?

[MikeyP]

So I dont really know what the chug was. When I looked at the log graphs, it looked to me like there was a slight dip in the torque curve around 4K to 6Krpm in the lower gears. I really didnt have the roads, and where I was going I needed roads!, to run it in the higher gears. It was almost like I was feathering the throttle. I never just slammed the pedal but if I was cruising up to ~3.5Krpm and then just got on the pedal I felt it. Dinan looked at my graphs and said that they did see anything abbi-normal and since I was not throwing a CEL light, the diagnostic was difficult to pin point. They sent me a new PCU. Dinan said they have swapped units in the past and it has fixed possible issues, so I opted for that. Remeber, this is a new Dinan product.

[BroDoze]

Originally Posted by MikeyP

So I dont really know what the chug was. When I looked at the log graphs, it looked to me like there was a slight dip in the torque curve around 4K to 6Krpm in the lower gears. I really didnt have the roads, and where I was going I needed roads!, to run it in the higher gears. It was almost like I was feathering the throttle. I never just slammed the pedal but if I was cruising up to ~3.5Krpm and then just got on the pedal I felt it. Dinan looked at my graphs and said that they did see anything abbi-normal and since I was not throwing a CEL light, the diagnostic was difficult to pin point. They sent me a new PCU. Dinan said they have swapped units in the past and it has fixed possible issues, so I opted for that. Remeber, this is a new Dinan product.

MikeyP Still all good? No more chug stuff with the new unit? Any more feedback to report? You running 91 or 93?

[BroDoze]

Originally Posted by Redbeemer

Mike: have you or anyone else experienced a possible BMW software install recently which is causing Dinan and maybe other piggyback tunes to start throwing a Check Engine light relating to the Manifold pressure not correlating properly with the throttle position sensor? OBD readers can NOT clear this code, only removing the piggyback does. BTW I have the older Dinantronics Sport piggyback on a G42 which has worked fine for over a year.

Dinan_Engineering Can you speak into any of this?

I’m now ready to install my PCU, but I don’t want to deal with any CELs or error codes or other issues related to the PCU.

[Dinan_Engineering]

Originally Posted by BroDoze

Dinan_Engineering Can you speak into any of this?

I’m now ready to install my PCU, but I don’t want to deal with any CELs or error codes or other issues related to the PCU.

Not something I have ever heard about. To date the only "issues" that have come up with the PCU are primarily app related oddities that are being addressed as they arise. Feel free to call in to support though and inquire directly with that team if there is concern -- they are the closest to it and would be intimately aware of any problems.

[MikeyP]

Originally Posted by BroDoze

MikeyP Still all good? No more chug stuff with the new unit? Any more feedback to report? You running 91 or 93?

I am still working some issues with the Dinan maps. Dinan does not support downpipes of any kind. The current thought is that there is too much flow. I will be taking some more logs later this week and work with Dinan.

[BroDoze]

Originally Posted by MikeyP

I am still working some issues with the Dinan maps. Dinan does not support downpipes of any kind. The current thought is that there is too much flow. I will be taking some more logs later this week and work with Dinan.

How has the support been?
As-in what are they doing with you to troubleshoot?
Are they asking you to run WOT with logging enabled and they’re reviewing the .csv files?
Have they sent you any new maps to try?
How do you flash a new map onto the PCU?

I called them yesterday to ask some basic questions about the PCU to get an idea of what some troubleshooting processes could look like if I ran into issues with any of the maps. I never really got past the pre-sales mindset - I was hoping to talk more with the engineering/development folks.
It really seems like they designed the PCU to not be as adjustable (custom maps back n forth with support type of thing), but more of a plug n play, set n forget box. You pick the map the works for you and that’s it. 91 oct has maps 1-3 to choose from. Start with 1, test it out, move to 2, test it out, move to 3 test it out etc.
It’ll be interesting to see if those built-in maps work out for most all cars/fuels etc.
I honestly really don’t want a box where I’m having to go back and forth with logging and support etc.

Obviously I assumed I’d be running map 3. Well, sounds like I can’t assume yet n will need to see what I can get away with - maybe I’ll only be able to run map 2 safely, or something.
I wish DINAN had a lot more (or any) notes about each tune and what the differences are.
What exactly are the differences between maps 1-3? Which one is best for the Colorado front range at 6,800ft on 91oct?

[MikeyP]

Originally Posted by BroDoze

How has the support been?

Support has been great for me. Most of it is done through email. Yes, I am sending them log files as well as any error codes that might throw with the software (in app). The PCU is a safe option for a piggyback tuner. I was told the fuel trims in map 5 dont look good for me. They want me to log the other maps, so we can find a safe map to run on my car. I would say this is a plug and play system, no back and forth with maps. I just jumped the gun with a tuner, not knowing how well it would play with my other mods. One of the maps will work for me, I just need to find the safe one, and it will provide gains.

[BroDoze]

Originally Posted by MikeyP

Support has been great for me. Most of it is done through email. Yes, I am sending them log files as well as any error codes that might throw with the software (in app). The PCU is a safe option for a piggyback tuner. I was told the fuel trims in map 5 dont look good for me. They want me to log the other maps, so we can find a safe map to run on my car. I would say this is a plug and play system, no back and forth with maps. I just jumped the gun with a tuner, not knowing how well it would play with my other mods. One of the maps will work for me, I just need to find the safe one, and it will provide gains.

^^ Cool, thanks - probably a good idea for me to (once I find the map that *seems* to be happy) send them logs so they can confirm. I don't want to think I'm running a safe map and it not actually being the case, or having it right on the edge or something.

[DrewNewM2]

Originally Posted by MikeyP

I am still working some issues with the Dinan maps. Dinan does not support downpipes of any kind. The current thought is that there is too much flow. I will be taking some more logs later this week and work with Dinan.

That’s too bad. What downpipes do you have? I was looking at the AA DPs thinking that if they don’t cause a CEL, should be good.

[MikeyP]

Originally Posted by DrewNewM2

That’s too bad. What downpipes do you have? I was looking at the AA DPs thinking that if they don’t cause a CEL, should be good.

I am running the Milltek high flo cat downpipes and the Milltek single midpipe. I got confirmation from Milltek that the high flo DPs will not throw a CEL and they do not.

[mike@x-ph.com]

Originally Posted by MikeyP

I am running the Milltek high flo cat downpipes and the Milltek single midpipe. I got confirmation from Milltek that the high flo DPs will not throw a CEL and they do not.

As expected GESI should not trigger the CEL

[BroDoze]

Got my PCU hooked up today. That Boost Sensor is an absolute MFr to get to.

Wow! Very impressed so far!
I’m just on map 1 and the car feels great! I was adised to start with map 1 and work my up to map 3 (all 91oct). Car pulls like a freight train and is very smooth. The whole power band feels great. This S58 continues to amaze me.

As soon as I paired it to the app for the first time it flashed new firmware to the PCU.

Huge thumbs up to DINAN on this thing.

[DrewNewM2]

Originally Posted by BroDoze

Got my PCU hooked up today. That Boost Sensor is an absolute MFr to get to.

Wow! Very impressed so far!
I’m just on map 1 and the car feels great! I was adised to start with map 1 and work my up to map 3 (all 91oct). Car pulls like a freight train and is very smooth. The whole power band feels great. This S58 continues to amaze me.

As soon as I paired it to the app for the first time it flashed new firmware to the PCU.

Huge thumbs up to DINAN on this thing.

Sounds great! Would love to see some before and after dynos. Do you happen to have downpipes? I may go this route with warranty for at least a few years until/if ECU unlocks become easier.

[BroDoze]

No downpipes. Don’t plan to.

Just the midpipes, axle-back and intakes I have now.

[mike@x-ph.com]

Originally Posted by BroDoze

Got my PCU hooked up today. That Boost Sensor is an absolute MFr to get to.

Wow! Very impressed so far!
I’m just on map 1 and the car feels great! I was adised to start with map 1 and work my up to map 3 (all 91oct). Car pulls like a freight train and is very smooth. The whole power band feels great. This S58 continues to amaze me.

As soon as I paired it to the app for the first time it flashed new firmware to the PCU.

Huge thumbs up to DINAN on this thing.

[DrewNewM2]

So is it confirmed with Dinan that we can’t run any downpipes with the PCU, not even catted ones that don’t throw CEL like the AA?

Was thinking about getting DPs and midpipe, running PCU for a couple of years and then maybe unlock and tune when I want more power which always happens.

[mike@x-ph.com]

Originally Posted by DrewNewM2

So is it confirmed with Dinan that we can’t run any downpipes with the PCU, not even catted ones that don’t throw CEL like the AA?

Was thinking about getting DPs and midpipe, running PCU for a couple of years and then maybe unlock and tune when I want more power which always happens.

you can run any downpipe with the Dinan tune; you will get the expected gains that downpipes add to a stock car, it will reach target power faster and hold it for longer

but since the PCU does not have specific downpipe maps, you wont be able to take full advantage of all the power benefits the downpipes add

the active autowerke downpipes are excellent upgrades to pair with the Dinan PCU since they do not trigger the check engine light.

[BSM2]

Is it safe to run this Dinan PCU with catless downpipes even though there's no downpipe specific tune? And what about catless downpipes with no tune at all?

[Dinan_Engineering]

Originally Posted by BSM2

Is it safe to run this Dinan PCU with catless downpipes even though there's no downpipe specific tune? And what about catless downpipes with no tune at all?

As Mike indicated above you can run downpipes (catted or catless) with the PCU without issue. The caveat is the PCU would not correct for the resulting CEL in the case of a catless DP nor would you be extracting maximum benefit out of the modified DP given there is no specific mapping to do so. Same can be said for running a DP without a tune at all. In both instances the benefit of the DP is primarily in the sound department although you still would garner some additional power simply be virtue of a restriction being removed.

[mike@x-ph.com]

Originally Posted by BSM2

Is it safe to run this Dinan PCU with catless downpipes even though there's no downpipe specific tune? And what about catless downpipes with no tune at all?

100% safe with both

you will get the check engine light which you can ignore, but if you ever have an issue with the car, you wont know since the light is always on all the time

[Superduper77]

Adding this to my list of mods to get.

How difficult is the install?