Turning boost down?

[Guest]

Hey guys i was wondering if when you get a boost controller you can turn the boost right down for when you want to save gas? is this possible?

thanks

[BC5RA]

Yes you can turn it down; whether it saves you gas...

Better to be more judicial with your right foot.

[Bazza-NZ]

 brock said:

Hey guys i was wondering if when you get a boost controller you can turn the boost right down for when you want to save gas? is this possible?

thanks

My mate tried this and having it turned down didn't save him much petrol at all, not what he was expecting, he tried out with all different levels and for his car and setup 5-6psi was the most fuel effective when it came to saving fuel - don't ask me why...

[nztintin]

if you wind it down the factory ecu setting may not be able to cope and use more gas than normal anyway.

best thing is install a boost gauge and keep off boost, thats how i drive in my foz around town, it's amazing how much you can save by just consiously driving and keeping an eye on boost and revs.

[Koom]

 nztintin said:

if you wind it down the factory ecu setting may not be able to cope and use more gas than normal anyway.

best thing is install a boost gauge and keep off boost, thats how i drive in my foz around town, it's amazing how much you can save by just consiously driving and keeping an eye on boost and revs.

When you're running a lower boost level than normal, the ECU will just look on its relevant table for how much fuel to put it at those revs vs airflow(afm). If you're on a factory ECU and you drive without using full throttle, the ECU will usually be in closed loop mode so it's using the 02 sensor to vary its fuelling to be as efficient as possible.

The lowest boost that you will be able to get (full throttle, full load) is set by the wastegate spring. Most factory ones are 6-9 psi. i.e. ~6 psi will be the lowest boost you can get if you floor it.

[Guest]

ok cool thanks guys! im getting a 2000 legacy GTB how much gas do they use? round 400kms per tank?

[Joker]

on a good day

350km + is average, more on wastegate pressure - which I rum mostly due to availability of 95 fuel (Apexi AVC-r boost control)

[Pappu1]

yea bro - the right foot is te king of gas saver -

[suubyduuby]

True words. Typically get 400-450kms around town, up and down the motorway and with a wee bit of right-footedness inbetween.

[Guest]

 webup']

[quote name='brock said:

ok cool thanks guys! im getting a 2000 legacy GTB how much gas do they use? round 400kms per tank?

/quote]

Im getting about 350-380kms on a full tank $80 around town.

That's about normal around town

you should get 400 - 450 Cruising on open road

[off2harrys]

if you want a car cheap on gas just dont get a turbo sooby,doesnt matter if i thrash the shit out of my car(and i mean thrash it theres a reason my cars never on the road) for the whole tank or if i drive with nothing over 2500rpm makes no difference on my rex (roughly 10-20 km extra to a full tank)my old gtb was a bit different,i spos its not using the 2nd turbo still crap though

[Guest]

yeah, i have a 2.7 petrol ute at the moment and that is quite thirsty (450-500km a tank) but oh well ahah il just get a job