can any one tell me wich is best l1 ecu and greys or l6 with 55's??

 

l6 with 55's

 

or l8 with either......daft question really, ask ur tuner

 

greys with a different aftermarket ecu.
tabetha

 

L1 and L6 arn't really alot different just different electronics really so no benefit, L8 you will only benefit from if you want things like ALS, LC.

Any ECU can be mapped for the injectors, some tuners can not map greys properly and so find someone who can, if buying new the Siemens makes sense.

Martin

 

If the tuner you use for mapping can't map greys, run away as fast as you can, and go elsewhere!!
tabetha