Hey guys,

Just got my ecu tuned (Unitronic chip) with the 320hp rating using 91 octane for my 2000 4.2. THe guy at the shop that did it told me there wasnt a 93 octane stage 1+ available, but, there was a stage 2 (for headers) upgrade available. Has anyone ever heard of this and if so is there a difference or gain from it ( he said the upgrade to the stage 2 would be an extra $100).

Any help on this would be great as i would like to get as much possible gains from the available upgrades.

Thanks.