Jump to content
SAU Community

Recommended Posts

I get on average 260Kms a tank with my GTT aswell. Engine wise it's completely stock. I've cleaned AFM changed the fuel filter, fuel filter was completely clogged I noticed a slight difference in fuel consumption, maybe I'll have to go for the O2 sensor and new plugs see if that helps as well

Also if someone has put a low temp thermostat in, or yours is stuck open, then that will also add to poor fuel efficiency. Cold crank enrichment tapers off at 70C so the quicker she gets up to temp the better.

This. I put a Nismo thermostat in my Riceline, water temp now sits at 60C unless I'm at a track day. I struggle to get 12L/100kms, when I first bought the car I easily got 9.5L/100kms on the highway

I do do alot of short trips, I'm running PFR8 plugs with a 0.9 gapp,

Short trips, incorrect heat range plugs - no wonder you have absolute crap economy.

Try running a 6 heat range for starters. And plan your trips better so the engine operates at the correct temperature for most of the time.

So OEM/stock thermostat is best for fuel economy? What about oil cooler with built-in thermostat?

Mines got a oil cooler with no thermostat, oil temp sits between 70-80 degrees. I run BCPR6ES plugs with the standard gap, which is 0.8mm from memory.

I've found V Power to give me greater mileage than BP Ultimate for some reason too

I ran those before the PFR8S and it was the same thing, well the owner in Japan did fit quite a few Nismo parts to the car, I'll check what thermostat is in there and give the AAC valve a clean aswell, is there a way I can get error codes through a power fc by any chance, thanks.

And whats the difference between the BCPR6ES and the BCPR6E? And could some refresh my mind the lower the number the higher the plug temp correct? thanks.

Edited by MrRx7s3

Yep lower number is hotter. Has anyone checked their timing? That would have an impact on economy. Also should be talking litres per 100 ks as too many variables with a 'tank' of fuel.

true but seriosuly when were talking a difference of 550km- 250km, i dont think brimmed vs filled is going to mean too much.

Its not the difference of how full, but how empty it is when you fill it. Accuracy of fuel gauge and how far you are willing to with the gauge below the E.

mine been tuned a while back after i re-did my fuel pump mod for battery voltage, crap economy, around 300km on full (72L tank IIRC), o2 sensors turned off, bcpr6es plugs, no leaky injectors, although i do short trips (10km) each way to work, low temp sender perhaps buggered?

mine been tuned a while back after i re-did my fuel pump mod for battery voltage, crap economy, around 300km on full (72L tank IIRC), o2 sensors turned off, bcpr6es plugs, no leaky injectors, although i do short trips (10km) each way to work, low temp sender perhaps buggered?

Install a wideband o2 and see what your car is doing. I've seen lazy tuners who don't even care too much about off boost injection maps and just rely purely on o2 closed loop to work out the mixtures.

I find mine is chewing up a fair bit of petrol as well. I've put some fuel injector cleaner in which should help, also going to replace the spark plugs and clean the AFM sensor to see if that makes a difference.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Did this end up working? Did you take some pictures?
    • And finally, the front lower mount. It was doubly weird. Firstly, the lower mount is held in with a bracket that has 3 bolts (it also acts as the steering lock stop), and then a nut on the shock lower mount itself. So, remove the 3x 14mm head bolts , then the 17mm nut that holds the shock in. From there, you can't actually remove the shock from the lower mount bolt (took me a while to work that out....) Sadly I don't have a pic of the other side, but the swaybar mounts to the same bolt that holds the shock in. You need to push that swaybar mount/bolt back so the shock can be pulled out past the lower control arm.  In this pic you can see the bolt partly pushed back, but it had to go further than that to release the shock. Once the shock is out, putting the new one in is "reverse of disassembly". Put the top of the shock through at least one hole and put a nut on loosely to hold it in place. Put the lower end in place and push the swaybar mount / shock bolt back in place, then loosely attach the other 2 top nuts. Bolt the bracket back in place with the 14mm head bolts and finally put the nut onto the lower bolt. Done....you have new suspension on your v37!
    • And now to the front.  No pics of the 3 nuts holding the front struts on, they are easy to spot. Undo 2 and leave the closest one on loosely. Underneath we have to deal with the wiring again, but this time its worse because the plug is behind the guard liner. You'll have to decide how much of the guard liner to remove, I undid the lower liner's top, inside and lower clips, but didn't pull it full off the guard. Same issue undoing the plug as at the rear, you need to firmly push the release clip from below while equally firmly gripping the plug body and pulling it out of  the socket. I used my fancy electrical disconnect pliers to get in there There is also one clip for the wiring, unlike at the rear I could not get behind it so just had to lever it up and out.....not in great condition to re-use in future.
    • Onto the rear lower shock mount. It's worth starting with a decent degrease to remove 10+ years of road grime, and perhaps also spray a penetrating oil on the shock lower nut. Don't forget to include the shock wiring and plug in the clean.... Deal with the wiring first; you need to release 2 clips where the wiring goes into the bracket (use long nose pliers behind the bracket to compress the clip so you can reuse it), and the rubber mount slides out, then release the plug.  I found it very hard to unplug, from underneath you can compress the tab with a screwdriver or similar, and gently but firmly pull the plug out of the socket (regular pliers may help but don't put too much pressure on the plastic. The lower mount is straightforward, 17mm nut and you can pull the shock out. As I wasn't putting a standard shock back in, I gave the car side wiring socket a generous gob of dialectric grease to keep crap out in the future. Putting the new shock in is straightforward, feed it into at least 1 of the bolt holes at the top and reach around to put a nut on it to hold it up. Then put on the other 2 top nuts loosely and put the shock onto the lower mounting bolt (you may need to lift the hub a little if the new shock is shorter). Tighten the lower nut and 3 upper nuts and you are done. In my case the BC Racing shocks came assembled for the fronts, but the rears needed to re-use the factory strut tops. For that you need spring compressors to take the pressure off the top nut (they are compressed enough when the spring can move between the top and bottom spring seats. Then a 17mm ring spanner to undo the nut while using an 8mm open spanner to stop the shaft turning (or, if you are really lucky you might get it off with a rattle gun).
    • You will now be able to lift the parcel shelf trim enough to get to the shock cover bolts; if you need to full remove the parcel shelf trim for some reason you also remove the escutcheons around the rear seat release and you will have to unplug the high stop light wiring from the boot. Next up is removal of the bracket; 6 nuts and a bolt Good news, you've finally got to the strut top! Remove the dust cover and the 3 shock mount nuts (perhaps leave 1 on lightly for now....) Same on the other side, but easier now you've done it all before
×
×
  • Create New...