Originally Posted by Exeter J
And does anyone rate any of the cleaner fuels like shell optimax and the other 2? i've ran 2 full tanks of optimax through and i aint gone any thurther or faster, the only thing i've noticed is the car sounds louder from 5,000 revs and upwards. Anyone else had this?
Yeah - defo rate optimax in mine. Might be just me but mine seems to pull better (mid range torque) on optimax as opposed to 95ron premium.
Mine ran 168.7bhp on 95 ron, so would be interested to see what optimax does?
Sorry to say but optimax wont make any difference to the engine on the ST170. The only reason to run optimax on a performance engine is if the timing has been adjusted closer to the limit of pinking / det (usualy for higher boost on turbo engines) the hgher RON rating that optimax has will help to reduce the chances of det / pinking
The ST170 engine has no way of knowing wheather you have filled up with 95 ron or 98 ron so its programmed for 95 ron to keep the engine safe
Now with the bluefin fitted you can reprogram the ecu to tell it your using 98 ron (optimax) and that could make a small difference
