Hiya all,
SH*T, whats going on?
Just registered taxed etc my RX7 and filled her up on Friday, and today empty tank after only 165kilometres!!
I suppose i could understand this if I ran something like the PinkPanther (lovely car, iffy colour by the way) but as far as I can see this car looks totally standard.It even has standard airbox and backbox.
Ok so I might have a heavy foot, but come-on.
In third on WOT I get full 11/12psi for first turbo, down to 7psi(changeover) then back up to 9psi slowly dropping off to 7psi for beeper.
The only thing I can think of is that I had the BOV hose temporarily disconnected for pssss sound, maybe too much air got in via the unplugged/unfiltered air box hole?
Any ideas would be great as I dont know if I can afford this love affair for too long.
"fit girls are always high maintenance, but this just takes the biscuit!"
:p
It depends a lot on what sort of driving you are doing. Is it all stop start or motorway? I\'d expect a lot more on motorway driving (hell, the PP got 170 miles off a tank on the m\'way :D ).
In stop start traffic it can be a lot worse. My old 300ZX TT was like that, 180+miles on mway, and 120miles if round town.:rolleyes:
have you checked for leaks :eek:
Seriously though RX\'s are heavy on fuel but 100 miles to a tank ... somthings wrong
You sure its not been converted but still says KM on the trip counter dial? 165 miles from a tank would be acceptable (lol!).
Fuel economy is something I have quickly learnt to like on the S14 im running. You notice a change from 14mpg to 30mpg!
Lee
Yeh I admit it was all about town stop start, but 100miles :eek: ...thats not right.(thats less than you P.Panth)
I dont know where to start checking, any ideas?
ok i did convert the the speedo it now reads in MPH but would that also change the odometer...??
I would think so. I dont know how it all works, but 165 miles off a tank is believable - thats about 12 mpg and I used to normally average 14 so sounds about right.
Cheers
Lee
OMG 12mpg :eek: = not o.k.
yes but 100 to a tank is only 7 point somthing :eek (asuming the 12 was correct for 165miles
How much to fill her up?
The reason i ask is i\'ve had 2 rx\'s the first was £36 to fill up doing around 120miles, the one i have now costs £50 to fill and does around 160-180miles ?
You may have a small petrol tank???
Michal, the speedo chip converts the odo as well as the speedo. The frequency of the pulses through that red and yellow wire is what drives the speedo. The odo integrates this to provide distance.
Mine odo is defintely going up much slower today after chip install this morning. Something not right with the speedo itself though as apparently I was doing 160mph on way back from MOT - the speedo seems fine to about 60 or 70 then just shoots up!
i get that kind of mileage... and it\'s a 3 speed...
Mine does about 12mpg, around town 100 miles on a full tank wouldnt suprise me, on the motorway i can get around 180 miles
i get about 190-220 out of a tank of super
Modding actually increases MPG surpirsingly enough !
Dave
I Guesstimated that I was getting 8 MPG.
That was due to letting it sit for 5 Mins to warm up then driving to work through traffic for 30 mins and then 1 minute on the turbo timer cooling down.
Don\'t take it to work much anymore!
OK I am now sure, that it WAS 165klms! not 165miles......
4.54 litres into 1 gallon
I used 60 litres = 13.21 gallons
165 klms = 102 miles
102 / 13.21 = 7.72MPG :eek: :eek: :eek: :eek: :eek: :eek:
Ok so all this talk about 17mpg around town is Bull. Unless you drive like my MUM you aint going to get it. Unless there is something wrong with my car?
any ideas otherwise reconsidering ownership.
17 mpg round town, who gets that ??
you could get a power fc and have it mapped properly to maximise ecomony I suppose but its a10 year old rotary sports car and driven round town stopping and starting is never going to be cheap car to run
saying that yours is particulary bad so I would imagine you have a fault, get it checked out
Dave
You guys have made me feel much better, i went from essex to Dragon in Exeter which is 225 miles, it cost me 50 quid to fill it up with optimax and i got nearly three hundred miles... i have a new ported engine with a single turbo, 850 prim inj and 1600cc seconds on a power FC...... I was doing between 80 and 90 mph all the way.......... of course its a different story when the right foot gets heavy :)
If your car is using so much fuel at idle, check the Lamda sensor and wire, if this isnt working it will run rich, not an expert but i think its something to do with running open loop or closed loop.
The wire can suffer from the heat and become brittle.
motorway driving is a lot better mpg
modded engines are mapped properly so will return better mpg
its never gonna be great though through town
for that you need a golf tdi or something not a rotary rocket
:)
QuoteOriginally posted by michal marzec
OK I am now sure, that it WAS 165klms! not 165miles......
4.54 litres into 1 gallon
I used 60 litres = 13.21 gallons
165 klms = 102 miles
102 / 13.21 = 7.72MPG :eek: :eek: :eek: :eek: :eek: :eek:
Ok so all this talk about 17mpg around town is Bull. Unless you drive like my MUM you aint going to get it. Unless there is something wrong with my car?
any ideas otherwise reconsidering ownership.
If all 100 miles were around town and you weren\'t driving very carefully then it sounds feasible to me. I try to avoid driving around town, but I did have a spell where I was forced into it and staying below 3k rpm for lots of 3-10 mile journeys I struggled to get 10mpg.
I\'ve never heard of anyone getting 17mpg around town, that is quoted as a normal mpg for mixed use (ie very little time in built up areas).
Still worth getting it checked out by a specialist, but you may find it is your driving style/use rather than something being wrong with the car.
QuoteOriginally posted by antnicuk
You guys have made me feel much better, i went from essex to Dragon in Exeter which is 225 miles, it cost me 50 quid to fill it up with optimax and i got nearly three hundred miles... i have a new ported engine with a single turbo, 850 prim inj and 1600cc seconds on a power FC...... I was doing between 80 and 90 mph all the way.......... of course its a different story when the right foot gets heavy :)
If your car is using so much fuel at idle, check the Lamda sensor and wire, if this isnt working it will run rich, not an expert but i think its something to do with running open loop or closed loop.
The wire can suffer from the heat and become brittle.
Sounds a good car any pics??
not yet, but when i get around to cleaning it i will post some, not as special to look at some of the ones i have seen, but i spent my time and money doing the rebuild and turbo conversion. I am only running 10psi at the mo as that is all its mapped for. I need to do a few more miles and cure a couple of minor teething problems, like plumbing wastegate back into the exhaust as it is far to loud!!! and weld a split in the manifold. Then i will have it mapped to 1 bar, dont think it will be on par with a T78 460BHP though!!! :). I only have a (big) TO4E I am quite happy so far as i tried a few different things which others havent tried and fabricated all the bits and peices myself, they seem to be working ok so far. Its the first rotary i have built myself despite owning them since i was 18!! So far so good, i recorded a 5.1 0-60 and 13.6 1/4 on my g meter, with road tyres and pump gas! Having trouble with the off take, it either bogs down or lights up the tyres! I\'ll get it right with practice. I will try letting a little air out of the tyres when i get to the strip.
What sort of boost do you run and what times have you run?
QuoteOriginally posted by antnicuk
not yet, but when i get around to cleaning it i will post some, not as special to look at some of the ones i have seen, but i spent my time and money doing the rebuild and turbo conversion. I am only running 10psi at the mo as that is all its mapped for. I need to do a few more miles and cure a couple of minor teething problems, like plumbing wastegate back into the exhaust as it is far to loud!!! and weld a split in the manifold. Then i will have it mapped to 1 bar, dont think it will be on par with a T78 460BHP though!!! :). I only have a (big) TO4E I am quite happy so far as i tried a few different things which others havent tried and fabricated all the bits and peices myself, they seem to be working ok so far. Its the first rotary i have built myself despite owning them since i was 18!! So far so good, i recorded a 5.1 0-60 and 13.6 1/4 on my g meter, with road tyres and pump gas! Having trouble with the off take, it either bogs down or lights up the tyres! I\'ll get it right with practice. I will try letting a little air out of the tyres when i get to the strip.
What sort of boost do you run and what times have you run?
Sounds like a very nice mota:), and it looks like you take pride in your work and arn\'t scared of doing things on your own, which is what i like to see:cool How did the engine rebuild go and did you find it fairly straight forward?? If my engine goes i fancy rebuilding it myself, i just can\'t help getting covered oil you see :bandit
Keep up the good work, Paul:)
SORRY FOR THREAD HIJACK!!!
Ok mate i thought you\'d got a dragon car just being nosey:)
but when you get some pics please do post, thanks