90 tuning box or chip?? or makes.

[NickoIrl]

hi guys
wondering has anyone tuned their 3liter.
if so how did it work out any problems. like easyer harder on fuel? more bhp etc.
thanks

 

[fridayman]

I fitted a Tunit. Very small fuel improvement, but much nicer to drive than before - I drive it slightly faster, which might explain why I don't get a better mpg improvement.

 

[NickoIrl]

cool thanks. i just checked them out their pricy. how did drive change? have a 5000k trip coming up so looking into reducing costs