Just wondering...

 

how many miles you get from a full tank,

and how much it costs you to fill it up...

 

Just wondering if its gonna be worse than my previous 200 miles to a £45 fill up :)

Just wondering...

 

how many miles you get from a full tank,

and how much it costs you to fill it up...

 

Just wondering if its gonna be worse than my previous 200 miles to a £45 fill up :)

 

Used to get 200 miles to a tank of unleaded. Now getting about 250 to a tank of Optimax.. Cost varies, but I'd estimate about £55 for a full tank (81.9p a litre at the mo)

 

Steve

Hi Mate,

 

It costs me £45 for a tank of optimax and i get 160-190 to a tank, works out at about 12-15 mpg :eek:

 

Baz

 

Standard except HKS Filter, Scorpion cat back and Blitz DV's at the moment, i've got a JUN chip sitting in the draw ready to go in, i can see it dropping to 4mpg :D

Are you running stock sb007?

£55 to fill up (80.9 Optimax)

 

Long runs- eg, mainly dual carrageways......yawn.............270-300 to tank

 

short runs- eg, town driving and fast driving ;) ...............160-200 t0 tank

 

Only got minor mods, Mongoose, De-cat, chip, Boost controller.

 

All estimates at 12Psi

 

Rich

Thats quite reasonable then considering :)

fill it up with optimax £45

get about 230miles about 70%urban 25%motorway 5%on idle in garage ;)

needle dosent bottom out before refill

stock for now but i hardly use the boost!!

15 mpg does seem poor compared to other cars does'nt it ?

I was thinking about cars with much bigger engines (porsche v8, and Jags, etc.) that do more mpg's than the 300zx.

 

John

LOL just had 116 miles from a full tank of optimax :D Now thats what I call car abuse :D Normally get around 200 miles to the tank with a bit of everything but the last figure was basically caining the ****er round country roads having a right old time :D

LOL just had 116 miles from a full tank of optimax :D Now thats what I call car abuse :D Normally get around 200 miles to the tank with a bit of everything but the last figure was basically caining the ****er round country roads having a right old time :D

 

Yea but have you checked your fuel tank for holes?,you fuel neck was like a rotten apple:D

LOL you cheeky **** :D I replaced that :p

15 mpg does seem poor compared to other cars does'nt it ?

I was thinking about cars with much bigger engines (porsche v8, and Jags, etc.) that do more mpg's than the 300zx.

 

John

 

just out of intrest when your stock tt is on full boost what would the real engine capacity be, ie if its compressed more than a NA engine doesnt the tt in effect give u larger capacity engine. im sure theres a way of working it out but not good at maths.

15MPG for 300HP sounds about right to me, with gentle driving you should see late teens / early twenties, but then who drives gently?

116 miles to a tank? jesus, lambo's do better than that I think!

Also, im no techy, but is it possible to raise the mpg by using an 'economy' mode ECU, giving you less power or something? I was thiking along the lines of having a switchable ECU unit? i.e. 2 ECU's, one performance mapped, one economy mapped?

15MPG for 300HP sounds about right to me, with gentle driving you should see late teens / early twenties, but then who drives gently?

 

 

I do!!! (standing joke on this forum)... well I do when I have my zed on the road :rolleyes:

My car averages around 220 miles between fill-ups. I drive 9 miles eah way to work, first half on dual carriageways (but engine cold for most of that) then the next 4.5 miles urban.

 

On the way home, I sometimes press the go pedal a bit more, as the car is warm by the time I reach the dual carriageway!! :slap:

 

On a run up to Yorkshire last Sept I got over 300. I was doing over 90 on the M1, then a thrash across a few interesting B roads....

 

Richard ;)

think i got approx 146 miles from my last £45 of Optimax...but then again, was driving to Crail, it was dry and I had some serious overtaking to do :)

15 mpg does seem poor compared to other cars does'nt it ?

I was thinking about cars with much bigger engines (porsche v8, and Jags, etc.) that do more mpg's than the 300zx.

 

The Z is a heavy bugger, which doesn't help when changing speed. But then if you're changing speed a lot you'll never get economy.

 

I generally get high teens with spirited driving... if I'm careful I can get into low 20s, but I have some strange psychological aversion to driving the Z economically.

 

You'll probably find the claimed figures for Porsches and v8 Jags have, erm, a high margin of error. (In other words, it's marketing *****cks!)

 

And of course, manuals give you better economy than autos. ;)

 

You can design for economy or you can design for performance, and the ECU is an important part of that, sure, but why would you buy a supercar and tune for economy for gossake?

 

To answer beermonster, if you're running +9PSI (stock figure) you're forcing just over half as much air again through, compared to an NA - but then again it'll be a little bit warmer even after the intercooler, and there's all sorts of other losses around the circuit. In fact it's probably only an extra litre or so. In fact, it's probably a meaningless comparison. :D

15 mpg does seem poor compared to other cars does'nt it ?

I was thinking about cars with much bigger engines (porsche v8, and Jags, etc.) that do more mpg's than the 300zx.

 

John

 

 

You have to bear in mind thatthe figures quoted by manufacturers are derived from tests carried out in theory, not practice, normally on some kind of test rig and so don't account for things like wind resistence, hills, pot holes etc...

:) Adam, you know me mate i had 194 out of a tank and also done 286 out of a tank going up north mate and not so fast.......but they do seem to :duffer: the fuel mate not like our other cars.....lol