mpg

[rx7aberdeen]

Mine must have obscene amounts of power, the thing was mapped by pip @wgt and its got a power fc, maybe i do drive like a peanut only on private roads though

[TTRex]

After mine was modded and mapped by pip it came back with about 60hp more and the same MPG

[Luciano]

On the 170 mile drive home yesterday after I bought my RX, I averaged 24mpg.   This was about 140 miles of motorway and about 30 miles of town, and on the motorway my speed was around 80 with some 110mph blasts.

As it was my first ever drive in the RX, I\'ve no experience to say whether this is good or bad in relation to other RX\'s or other journeys.

I can say that during a 1500 mile drive to the south of Italy in a Ferrari Testarossa we averaged around 25mpg... and that included a mix of driving including the alps.

Something tells me that RX ownership is going to be more expensive than I had previously thought!

[gsb876]

Yep thats about right mate!!!!:rollin

[bobster]

I hate these MPG threads..... It would put you off buyiong a Rotary

[ds2000]

£40 at 79.9p/l usually sees me get 230-250 miles

last £40 got me 470km which is roughly 280 miles - but I did still have some fuel in the tank so it may have been closer to £45

[Luciano]

On a slightly different note, I was suprised at the size of the tank on the FD.

When I bought the car it had very little petrol in it (suprise suprise) so I took it straight to a petrol station.  I put in regular unleaded and it took £58.50.  I must admit I did gulp!

On (another) different note, when I started putting regular in I realised perhaps I should\'ve stuck super unleaded in.  I know Jap imports in general tend to like higher octane fuel.   I will do a proper search in the forum later (to avoid asking the same question as hundreds before me), but just quickly - is it important to run the FD on super unleaded, or not?

[Jin Kazama]

You can run your car on unleaded 95 but it will not be very safe. The higher the RON of the fuel you put in, the lower the likelyhood is of detonation or \'pinking\' occuring.... which incidentally can be fatal to a rotary. Many people including myself use Optimax RON 98 as it is the highest octane rated fuel available from the pump in the UK. Modified Jap imports with aftermarket ECU\'s will have been mapped for 100RON fuel and if running high boost levels you will need to put octane booster in too- or get the ECU remapped for UK fuel. Hope this helps.

[Luciano]

As an update to the MPG issue, if you ever wondered why RX7\'s consume lots of petrol it\'s because:

"...the thermodynamic efficiency of the engine is reduced by the long combustion-chamber shape and low compression ratio."


I thought that was a nice quote.  (courtesy of howstuffworks)

[davefrith]

Just to add my 2p after reading through the thread

I put £60-65 in to fill the tank, I fill up again about 210 miles later

[Luciano]

Dave - that works out (using my dodgy calculations!) at 13mpg.

Maybe you should sell the heavy metal capped boots you\'re wearing and buy some light weight airmax\'s  

[davefrith]

oh good not too bad then !

[ds2000]

Ruddy ell Dave,

I\'d get a block of wood put under your right pedal

[davefrith]

I think you\'ll find its about average for a modded rex

[ds2000]

:rollin

/steps away from his chequebook :p