Dinan D900-45X kit (Engine software)

[ajacks8]

Originally Posted by Overboost

I think flashing your DME to the latest factory assembly number would take care of the stutter at 2800 RPM. Known issue.

https://www.e46fanatics.com/threads/...pdate.1081716/

As far as anyone having used this specific Dinan kit, it seems to be a brand new offering and I doubt any of us have. I do have the Dinan tunes in my gearbox and DME and have been happy with the results. Hell, for $200, what do you have to lose, just make sure to flash the latest factory stock DME assembly number before moving to the Dinan.

Hello. I ordered the 48x kit from DINAN yesterday after seeing this thread. I wanted one KIT for $199.99 and another “tune only” for an identically spec’d 4.8is...but they require two full kits to be purchased because they are a ready-made kit for specific models. (The tune, alone, retails for $119.99 but is only available like that to an authorized dealer. Anyways, I’m going to give it a shot with one of my 4.8is, but please educate me on how to “flash the latest factory stock DME assembly number”. Thank you. There is a link to dinan portal download and flashing instructions for tune on the product page for reference.

[Overboost]

Originally Posted by ajacks8

Hello. I ordered the 48x kit from DINAN yesterday after seeing this thread. I wanted one KIT for $199.99 and another “tune only” for an identically spec’d 4.8is...but they require two full kits to be purchased because they are a ready-made kit for specific models. (The tune, alone, retails for $119.99 but is only available like that to an authorized dealer. Anyways, I’m going to give it a shot with one of my 4.8is, but please educate me on how to “flash the latest factory stock DME assembly number”. Thank you. There is a link to dinan portal download and flashing instructions for tune on the product page for reference.

Click on the link I posted above and read that thread. One of the guys (moderator) over on E46Fanatics does this for any member over there for free. You might reach to to him for some help and he certainly knows the latest assembly file numbers. You will need a laptop computer and a K+D CAN cable (INPA) to run the WinKFP program to flash the DME.

[wpoll]

Originally Posted by Overboost

... You will need a laptop computer and a K+D CAN cable (INPA) to run the WinKFP program to flash the DME.

Strictly speaking, you only need a K-line cable - there's no CAN on the e53 diag port.

I use this - as it's a lot cheaper than the full K+DCAN cable ($20 vs $69)....

http://www.one-stop-electronics.com/...&product_id=22

[Clockwork]

Originally Posted by Overboost

Click on the link I posted above and read that thread. One of the guys (moderator) over on E46Fanatics does this for any member over there for free. You might reach to to him for some help and he certainly knows the latest assembly file numbers. You will need a laptop computer and a K+D CAN cable (INPA) to run the WinKFP program to flash the DME.

Sadly, the OP of that thread knows nothing about N62 engines... I think WinKFP can tell you if there is an update available...

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[Angel.X5]

Originally Posted by Clockwork

so, I see this has bery much sidetracked from the original question...
So none of you have used this Dinan Kit?
I wonder if its just smarter to get a local one, as one local tuner was advertising a 4% gain in both TQ and HP... but most importantly its to get this stuttering at 35-45 km/hr figured out first.

Got mines today for the 4.6. Install is quick.
Seems snappier. Really loves at home at higher speeds. Have to use cruise control to keep her at 80.

I’ve not tested the increased rev limiter (to my knowledge) didn’t really look down nor top speed limiter. Lol.

Idk man. I may go for the TCU update, but she rides so nice I’m just happy using her on weekends. Man that sound borderline harassing. lol.


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[bcredliner]

Using premium does not increase power.
Premium does not burn hotter.
Premium does not clean out deposits.
Using premium does not improve mileage.

Just use the fuel the engine was designed to run. If the manual says to use regular purchasing premium is a waste money. If the manual says use premium that's what you should be using.

[Fifty150hs]

Originally Posted by bcredliner

Using premium does not increase power.
Premium does not burn hotter.
Premium does not clean out deposits.
Using premium does not improve mileage.

Just use the fuel the engine was designed to run. If the manual says to use regular purchasing premium is a waste money. If the manual says use premium that's what you should be using.

The manual says use Premium.

[c-bass]

Originally Posted by Fifty150hs

The manual says use Premium.

My fuel door says it also however I suppose it also depends on what is classified as "premium" fuel around your neck of the woods.

Manual says 91 octane which is premium for me.

I don't know much about the topic but from my understanding even though the knock sensors are there for a reason and can compensate, wouldn't the engine prefer not to deal with that?

I've used several different cables and have seen no difference between a cheap INPA K+CAN K+DCAN off Amazon and something more expensive.

The FT 232 chipset is the standard

[Fifty150hs]

Originally Posted by c-bass

My fuel door says it also however I suppose it also depends on what is classified as "premium" fuel around your neck of the woods.

Manual says 91 octane which is premium for me.

I don't know much about the topic but from my understanding even though the knock sensors are there for a reason and can compensate, wouldn't the engine prefer not to deal with that?

I've used several different cables and have seen no difference between a cheap INPA K+CAN K+DCAN off Amazon and something more expensive.

The FT 232 chipset is the standard

91 is premium here as well. Seems to me if BMW says to use 91 they did so for a reason. The manual doesn't say go ahead and use regular if you want, but you'll get better performance if you use premium. It says use premium.

[c-bass]

Originally Posted by Fifty150hs

91 is premium here as well. Seems to me if BMW says to use 91 they did so for a reason. The manual doesn't say go ahead and use regular if you want, but you'll get better performance if you use premium. It says use premium.

I made the mistake of asking the regular vs. premium question when I got my first BMW.

The helpful responses included:

"If you're worrying about .25 cents more a liter then go buy a Honda"

"Read the manual"

"You can do whatever you want with your car"

"I get better mileage with premium so it offsets the cost"

From my personal experience when I was working as a courier and putting about 300km a day, my M54 mileage was slightly worse with regular fuel.

Although not the most scientific method but I keep meticulous fuel records and after about 40,000km in 6 months using premium, every time I filled up with regular I would get about 50km less.

Maybe it was in my head but it also didn't feel as smooth under hard acceleration.

I'm not talking out on the track, more like stomping on the gas to pass that prick driving the John Deere harvester at 25mph kicking up rocks at you from the unpaved shoulder on a single lane country road...