Just finished swapping to the 2.59 pulley on my 2011 GT500.
Before doing this I Emailed Jon Lund for a tune update, he stated no update needed for the pulley swap.
seems to me the first tune would have to be very conservitive than.
I'll get it on the dyno to check the tune asap.
Also upgraded the plugs to the NGK TR6 gapped at .033
Before doing this I Emailed Jon Lund for a tune update, he stated no update needed for the pulley swap.
seems to me the first tune would have to be very conservitive than.
I'll get it on the dyno to check the tune asap.
Also upgraded the plugs to the NGK TR6 gapped at .033