Jump to content
SAU Community

Recommended Posts

Hey any help with this is greatly appreciated. I'm driving an R33 GTS-T and currently my fuel economy is pretty bad with 350kms a tank. I'm currently running boost at 13.5 psi and I’m interested in switching to an electronic boost controller so I can also run the car at 7 psi and in turn hopefully increase fuel economy greatly. What are your experiences/opinions on this?

I'm also interested in any experiences with fuel economy when running on boost at 7 psi?

TIA ;)

I agree with everyone else, running 7psi won't help much.

From what I've read if you're getting bad fuel economy (and its not because of your heavy right foot) then you might need to check your o2 sensor in the exhaust is working as it should.

Fixxxer

350kms, that's awesome.....my record was 206.8kms for the F100....

The big question here is what sort of driving is it, 350 is no good on the highway, but not too bad for stop-start in traffic. I aim for around 350 - 400 around town and 600ish on the highway, that's on 18psi.

I have an EBC these days and it makes no discernable difference to the fuel economy.

Yeah... i've changed my sensor TWICE, and it didn't make a lick of difference. I'm not blowing any rich smoke or anything, sparks have been changed to iridium items recently too.

Highway driving gets me close to 400k's, gentle driving or not-so-gentle driving makes no difference in town... still get 350 TOPS.

No leaks that I can detect either. Fuel filter looks good and clean. MAF is working perfectly but I cleaned it anyway.

I've given up on trying to solve this one. =-]

Oh... I fill up 50L each time. So 50L gets me 350k's. 7km/L

A good tuning is very important to using good fuel efficiency. You might me using too much fuel right now but not making the power it should make. a good tuning should fix this problem and with a boost controller you should be able to adjust the boost and fuel level easily

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

    • Just trying to get my head around this. At 5psi of boost, you turn on your wmi pump, and then you're using a 3000cc injector, to allow flow upto the actual engine, where you have your 6x200cc injectors and a 500cc injector. If the above is correct, what advantage are you obtaining by having the 3000cc injector blocking flow, is this just incase a line breaks between that injector and the motor you can stop flow immediately? Or are the 6x200cc and 500cc less injectors and just spray nozzle?
    • Welcome! New member myself, but I had an R33 back in 2002. Best advice I could give, based on my experience: if you're running the factory turbo, be very conservative with boost. I made the mistake of just fiddling around with the boost controller and cranking the boost for fun, and the end result was my intake pipes popping off frequently from the constant deluge of oil that was being blown into the recirc by the stressed-out turbo, which itself was siphoning oil from the engine and farting it out both sides of its centre bearing (or something to that effect). If I could do it all again, I would have gotten a new turbo and had a tune dialled in professionally and then just left it alone! Funny you mention the metal shavings in the gearbox, as I had the same thing - the probe plug (magnetic drain plug, essentially) would come out caked with shavings. At least it was doing its job. Not sure if that's just sacrificial wear and part of the deal, or if my gearbox was shagged, but I wasn't abusing it. Enjoy the R33 - they're a dying breed, and if they weren't $35k+ on CarSales in Queensland, I might have picked up one of those again, instead of the 370GT I own now (though I'm loving the 370GT, that big 3.7L V6 just hits different).
    • Howdy folks. I owned an R33 back in 2002, which was thoroughly beyond my capacity (financially speaking) to maintain/insure, so we parted ways in 2004. Fast forward 21 years (to literally yesterday, in fact) and I'm now the proud owner of a 2007 V36 370GT. I'm happily surprised by how much power the VQ37VHR makes, compared to the RB25DET, considering the latter is turbocharged. I had planned to add a turbo at some point but I'm on the fence about whether I'll even need it (though I do love the sudden onset of extra torque). Any other 370GT owners around the traps, I'd love to hear about your experiences with this car (good and bad).
    • Perhaps the answer is... more jacks!* *proper jacks must be used.  
    • I NEVER think about using a scissor jack unless there is absolutely no other alternative. f**king things are dangerous, annoying and stupid.
×
×
  • Create New...