[Shenofjo]

As someone from the Japanese import community for the last 30 year, I’ve been thinking mods all my life. However, I am also into keeping the car as manufacturer intended. This struggle of opposites makes for a fine line to walk on.

With the QP5, I am also interested to walk this fine line as well. One of the ways to do this is look within the Maserati product line. Granturismo has some offerings with more horsepower and such from same power plant. Has anyone looked into or tried ecu swap between the 2? My main interest is to be able to hold gears on redline like the GTS models and wouldn’t mind the added HP is possible.

Edit: many of the granturismo from 2013 + has higher HP figures, so are the rare 2013 QP5 S and GTS models. How interchangeable are they to earlier model years or even crossing models?

 

[FormulaDynamics]

Nikasil Liners, Diamond Like Coating, Hydraulic tappets, Reed Valves are internal changes that were made, the rest is small software adjustments and perhaps a bit of marketing. There is not significant differences in the ECU files between these changes and nothing that we believe would noticeably benefit a 91 octane car. So perhaps simply the day they tested it, differences in the exhaust or drivetrain that are small but make some difference, it also could just be marketing. Another issue is that you can't just switch ECU's between cars. ECU's are linked to the vehicles other modules such as the body module and immobilizer. The car would not start without the correct ECU installed.

You can get your ECU tuned for performance of course, we can do better than the factory tunes to improve power, the gains on the 4.7L are approx +19hp / 21lb ft torque.

Best Regards,

 

[Shenofjo]

Nikasil Liners, Diamond Like Coating, Hydraulic tappets, Reed Valves are internal changes that were made, the rest is small software adjustments and perhaps a bit of marketing. There is not significant differences in the ECU files between these changes and nothing that we believe would noticeably benefit a 91 octane car. So perhaps simply the day they tested it, differences in the exhaust or drivetrain that are small but make some difference, it also could just be marketing. Another issue is that you can't just switch ECU's between cars. ECU's are linked to the vehicles other modules such as the body module and immobilizer. The car would not start without the correct ECU installed.

You can get your ECU tuned for performance of course, we can do better than the factory tunes to improve power, the gains on the 4.7L are approx +19hp / 21lb ft torque.

Best Regards,

Thanks for your input! HP gain is one thing, but that shift logic in the GTS to hold gear at redline and the theatrics that comes with is even more essential. Unfortunately, the ecu swap isnt something that can easily be done like it is with the mkiv Toyota Supras... Do you have any insight on the transmission logic? Would love to see this on the market if possible. I would go for a QP5 S in a heartbeat than waiting for the GTS

 

[[email protected] Enzo`s Atlanta]

Only the dealer can change the TCU software and because your VIN wouldn't match a GTS the server won't allow it to download the GTS software into your TCM...That is how it was explained to me by a dealer tech..You simply can't select what you want..Everything is by the VIN#...Jason

 

[FormulaDynamics]

The TCU and ECU typically have to be aligned at that point. The TCU makes requests to the ECU, they have to be the correct versions on the same protocol. We have tuning products that can certainly improve your experience and performance but you're going down a rabbit hole trying to change everything around in this manner. One thing simply leads to another and another. Jason is correct, the dealer will not be able to help with this. The tools they have are all VIN based and only allow very limited changes that are specific to your car. They do this so that techs aren't able to start mismatching software / hardware, this leads to plenty of problems. I think the GTS is the right choice for what you're looking for... keeps things much more simple.

Best Regards,