E85 tune
 

Looking to put e85 tune on my ss. It has the gmtu already. Has enyone else done this? And how to tune for it? Thanks

I run full e85 what will you be tuning with

Thats what im un sure of so far if i do the e85 tune will this void my warranty?

If GM finds the tune, good chance they will decline your warranty claim.

Major engine or trans repair may cause them to investigate the PCM a little deeper.

Agree if gm sees you alter the car they will void it

Yeah thats what i was thinking that's why I did the gm tune

E85 is not worth it unless you put the zzp cam in