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Bought a new 940T wagon! Needs a little help on MPG, Performance 900 1994

posted by  Blue Horse on  Tue May 20 11:19 CST 2008
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last visit: Mon Apr 8 17:57 CST 2013
[RELATED]

First do all the tuneup/maintenance stuff recommended below. Then, if the MPG is still too low to suit you, consider replacing the automatic with an M46 (which also makes the car a loot more fun to drive) and changing the rear axle to a taller gear. Most automatics have a 3.73, 3.54 was standard for M46 740 turbos, and 3.31 for M46 and M47 N/A cars. The M47 is not suitable for use with a turbo, as it doesn't hold up well with the extra power.

For more power, track down and install a Turbo+ kit. This was offered by Volvo as an add-on. It allows extra boost at full throttle (good for another 25-30 HP) but does not affect drivability or gas mileage (if you keep your foot out of it)

It is also possible to install the APC boost controller from a late 80s-early 90s Saab, but I am not familiar with any of the details of doing so.






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