Hello,

I have a MB E55 AMG with some mods like carlsson carlsson pulley and ECU tune (currently with 560 whp) and I like to upgrade the injectors and have some doubts.

I see 550cc is the recommended size for injectors in tunning shops but I saw other biggers like Bosch EV14 1200cc.

Do you know if these are best or I won't use his power at all ?

This will require a ECU tune again ?

Thanks in advance.