[Dinan_Engineering]

Originally Posted by Dandaman184

What if we have an extended full warranty of 6yr/100k miles, does it impact that at all? Thanks

The Dinan warranty specifically relates to the BMW 4yr/50k new car warranty. As to the effect on an extended warranty you would want to ask the dealer or consult your legal paperwork directly since all 3rd party extended warranties have different limitations. For most extended warranties ANY performance modifications automatically affect the extended warranty. This isn't true for all but in the vast majority this is the case, hence why you would want to research your specific case beforehand.

Originally Posted by paradoxical3

Can you specifically explain how the dinantronics piggyback unit ties directly into the factory ECU to a degree that the Burger Motorsports JB4 does not? It is hard to understand how that is the case when you are utilizing the same connectors they are.

Other vendors typically tie directly into select signals at sensor locations throughout the engine compartment. Dinan on the other hand connects directly into the DME, not simply just the sensors. This way we have access to all the signals coming and going from the ECU, not just the boost or other select sensors. While you can accomplish more power via fewer sensors you are relying on the factory DME to auto-correct the other mismatches it sees. This can lead to drivability issues, delayed throttle responses, or a host of other issues. By interfacing into more data we are not reliant on the factory ECU auto-correcting these values and thus the side effects are avoided. Everything we interface with is done so no faults or codes are thrown whether those lead to a CEL or a hidden code doesn't matter. Our device just doesn't create them because we are adjusting data at every level and not relying on the factory ECU to have to auto-correct anything. The factory ECU simply sees everything as working as intended while the DINANTRONICS seamlessly interfaces with the factory components, and ultimately leaving the DME to not have to spend calculations 'fixing' problems.

It is my understanding that the encryption for the N20 and N55 engines has yet to be cracked, which means that Dinan cannot access the actual ECU parameters/maps anymore than any other tuner could.

Correct. The F series DME's have not been cracked so we cannot access the data tables directly but by manipulating more signals at the base level we can alter more parameters.

This quote from your website is patently false, to to the best of my knowledge: "The DINANTRONICS™ Performance Tuner uniquely has the capability to adjust target Lambda, correct short term trim as well as ignition timing errors induced by raising boost pressure. This enables Dinan calibration engineers to optimize air/fuel mixture and ignition timing at elevated boost pressure throughout the entire gamut of engine RPM and engine load."

With the N55 and N20 engines how can you adjust target Lambda when no flash tuning exists outside of a select few 2011 models with the proper DME? Further, are you saying that you can correct timing errors simply by raising boost? If that is the case, any piggyback would be able to do so (surely you are not claiming that only Dinan piggybacks can raise boost).

See prior comment for most of this. We are not saying we are correcting timing by raising boost. The quote states that raising boost typically produces timing errors and that the Dinan tuner can adjust for them. No one is claiming that we are the only ones that raise boost, quite the opposite. We are stating that we do much more then JUST raise the boost.

Are you really claiming to be able to manipulate AFR ratios at specific RPMs when no other tuner can?

As stated before we do not have access directly to the tables since the ECU has not been cracked. However, we can essentially do the same thing by interfacing with more signals and pointing the factory DME into the direction we want it to go.

Lastly, if the end-user is not happy with the DINANTRONICS Performance tuner we offer a satisfaction guarantee so they are free to contact us within 3 business days and we will refund them the cost of the unit (labor charges are not covered). We are sure they will be satisfied with the performance and ultimately the support from the factory matching new car warranty which is why we offer this guarantee.

If you or anyone has any specific technical questions I would encourage you to reach out and call us, as the sales department is much better equipped to answer the technical questions than I, the random internet/online marketing guy.