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Tune & OTR

Jackel

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Approximately how much are we looking at $$$ in terms of lower ratio diff gears. VF is a heavy car and a bit sluggish off the line. Wouldnt mind get from 0-60km/h faster.
 

07GTS

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u want a higher ratio so it multiplies torque more, if ur auto just get it to hold 1st longer as it almost immediately changes into 2nd then wont go back unless ur over 80% throttle
 

panhead

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The best approach is not to worry about the overall output readings on the the dyno sheet but have a tuner who's got the power curve right.

If you want to know how much power you're making, take the vehicle to the strip and make a few passes then you can calculate the output at the wheels.

Or find a shop with a hub dyno which removes factors like wheel spin, strap down, rolling radius & tyre pressures from the process but are still not totally actuate as they reduced vehicle inertia due to the removal of the rims and tyres.

Hub dynos also tend to offer up higher 'at the wheels' output readings compared to the roller dynos which may please some owners.




.
 

Theprojectcar

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Approximately how much are we looking at $$$ in terms of lower ratio diff gears. VF is a heavy car and a bit sluggish off the line. Wouldnt mind get from 0-60km/h faster.
THIS is so true. Good question.
 

TSMAX

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Edit - started another thread :)
 
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