Dinan D900-45X kit (Engine software)
 

Hi all, has anyone tried this device?
https://www.dinancars.com/products/s...s/D900-45X-KIT

I explain why I'm looking at removing my current custom tune and installing this, in post 9

Sorry, double post in the same forum, ADMIN, please erase.

I have Dinan Stage 1 DME and EGS software loaded in my E46 for 18 years now. I had the dealer do the flash but loved every bit of the money I spent.

The speed limiter delete was worth the money alone. You will need to run premium fuel to get the best performance though, it adds a little more aggressive ignition timing map.

Aside from the teenagers who just recently bought their first beemer I thought we all ran premium anyway. :D

Premium is a thing of the past for me. :flame:

I have been straight regular fuel since 2008 when the economy crashed. I didn't have the extra $.50/gallon so I ran regular and let the knock sensors do their work and adjust the timing map compensations. I never went back to premium but I never really drive aggressively.

Both cars have been no problem now for 13 years, even the Dinan E46 tune.

I don't have specific experience for comparison on the facelift E53 but in general the Stage 1 tunes of any variety don't give you more power but an overall more enjoyable driving experience. Such has been with the APR software I've experience on VAGs and various packages on the JDM vehicles I've run. As for Dinan, they make some all around excellent stuff, for $200 you will wonder why you didn't do it sooner.

If my memory serves, regular fuel has less toluene, xylene, etc. So there should be less soot, essentially burning cleaner.

I have had Dinan software since my 2002 4.6 turned 2,500 miles. Now at 122,000 or so. At that time it was required that an authorized Dinan shop had to install all Dinan products. The software was designed to match up with other Dinan mods. I have never had any problem with the software or any of the other Dinan mods installed. Dinan has changed hands but I have not heard anything bad about them since the buyout. On the other hand, it might be better to get a custom tune that may offer better performance results.

Thanks.
I am not really expecting gains, but my concern is I had my X5 custom tuned in 2012 by a local tuner shop. Never had any Dinan goodies, and even tho I have the Dinan enclosed CAI and a larger bore throttle body now, I'm still not chasing the Dinan badge, BUT here is my reasoning for this question...

For MANY MANY years now (possibly since 2012, see the coincidence...) I have had an issue at when I'm slowly accellerating up OR just cruising at the 35-45 km/hr (school zone speeds, and there are a lot of school zones where I live)my x5 seems to buck, but only apparent to the driver. This is the only speed range and no I can't avoid it. It seems as tho the fuel is being fed, then stops, then flows, then stops and I can feel this strike/slip or surging effect in the pedal. No the RPMs and speedo do not fluctuate at all. I have since done a few tranny flushes and even bought a whole new valve body with apparently upgraded solenoids for all gears. that seemed to help for a few days, but then the same problem came back (I did however seem to get rid of the long lag time in the shift between D/N and R). even my awesome indy Bimmer mechanics can't figure out whats going on.

SO I was thinking, since I've done everything short of another transmission (and a tranny shop has told me they do not think its a tranny issue, but more of an engine fuel delivery problem) I was gonna revert my DME back to stock flash and see how it drives. IF the problem is cured, then fantastic.
BUT Then I'd like to go with another tune and perhaps bypass the local tuners, whom I'm not even sure know what they're doing, and going with a Dinan Tune, BUT I was surprised to see you could just buy the module yourself, as I was under the impression it HAD to be done by a Dinan shop... SO was this a counterfit product, or perhaps just a half-assed tune?
So I'm just looking to see if anyone here has bought this package and performed it themselves?
Thanks all

Coming from the Dinan website its definitely not counterfeit. And it will be the same tune they produced and released years ago, it would actually cost them more money to develop a new tune, even if it was half-assed. The reason it's cheap is because they realize that their target market drives F series vehicles now and the m62tu tunes are collecting dust on the shelf. So they are pricing the m62 tunes so that the high schoolers who are inheriting dad's well taken care of X5 or 540 can afford them. Speaking of which I should look at getting it for my e39 540