Flynpch

Does anyone know the difference in engines between the two cars? Is the 4.0l engine the same with just different mapping - 469 vs 550 bph? Could a Eurotune remap give me the same engine performance?

xbox

It is a fact that the base GT and GTS engines are identical, with any tune yielding identical results.

I'm pretty sure that GTC is the same story, maybe also GTR.

Better question...... is the E63S motor the same...... 612hp/850Nm anyone

AMG 17GT

GTR has larger twin scroll turbos, revised intake and pistons. I believe it is same as e63S.

xbox

Ah yes, I forgot they went twin scroll

Flynpch

What I am trying to determine are the two Roadster engines the same, Base model 469 hp GTA vs 550hp GTC and can the GTA be remapped to GTC like performance.

AMG 17GT

Yes GTA an GT And GTS same engines with different factory tuning.
Eurocharged, for example gets basically 600/600 HP and Torque from those engines so you would surpass GTC power and throttle response.

okbarnett

easy to figure out. look at renntech site for ecu tunes. Look at the engines they provide as stock and moded. see if there are any differences. PS youre alot better off to buy a local ecu tune like renntech than try to buy parts made for other countries.