How to get better fuel economy on a R32?

[ScarifieR]

hey

just wondering whats the best way to get better fuel economy

i put a bov on the other day and since then i get 45k's to 10 bucks and i hardly give it the boot but i could feel it had more power

now taking it off im back to my 10 bucks to 100k's but can i get even better?

also the bov i used was a gfb basic

would a gfb hybrid or turbosmart dual port be more fuel economic?

need some tips n tricks!

since i got the car ive done these things (the car is fully stock standard)

changed oil (crap valvoline xld in it FFS!) to pennzoil gt performance 10-40 semi synth (gotta change every 5thou k's or 3 months so im not going expensive stuff cause $40 for 5ltrs is enuff)

put a jamex sports panel filter in (felt a touch more power from changing the stock paper 1 to that)

and changed fuel filter

now if there is anything i can do in these regards

A: get more power but keep the fuel economy near the same

or

B: get better economy full stop how it is

thanks for inputerers

[Guest INASNT]

man seriously if u wanted a fuel economical car then u should have bought a little 1.5 litre 4 cyclinder.

And the more power u want the more fuel u r gonna be using, more air + more fuel = more power.

U can always drive like a granny and change gears before getting onto boost.

[akeenan]

i put a bov on the other day and since then i get 45k's to 10 bucks and i hardly give it the boot but i could feel it had more power

:confused:

[Guest INASNT]

Originally posted by akeenan

:confused:

stupid isent it that people still believe that BOV's give u more power!!

[Roy]

stupid isent it that people still believe that BOV's give u more power!!

No need for such a comment, his original BOV may have been cactus and leaking something chronic (nothing lasts forever and 10 years out of a valve with high cycle life is a pretty big expectation)

If so , a bit more go under boost could be expected.

Anyway as for poor fuel economy, im getting about 480-510kms a tank, i driver rather sedately. If the drop in economy is bothering you that much, try some new plugs and a bottle of injector cleaner.

Always makes a difference on my car, but usually only noticeable for about 4 tanks of gas, then i start to get slight misfire, reduced economy etc. I think my car runs fairly rich so spark plugs are quickly past their best.

[ScarifieR]

yeah my current bov must be leaking cause i could see it doesnt hold boost as much as the new 1 did

[Guest INASNT]

Originally posted by ScarifieR

yeah my current bov must be leaking cause i could see it doesnt hold boost as much as the new 1 did

get it fixed and put new high tention spring in it! I did it to mine and it runs perfect now, way better that with the blitz bov i had 2

[ScarifieR]

how do u put a new spring in it and get it fixed

can ya do it yaself?

and where do u get the parts for it

[Guest INASNT]

when i got my car serviced i asked them to check the bov out cause it knew it was leaking. They do like a reco on it. Any workshop that knows about turbos and bovs will have the parts

[Roy]

Are the RB25 BOV similar to RB20, as the RB20 have a rolled edge.

I cant see how you could dismantle/reassemble, without ruining the integrity of the seal/rolled edge?

[bonzelite]

the best remedy for fuel economy is to stagger days you drive the skyline. carpool, or consolodate trips to the market, etc. swap the flywheel for an aluminum one as well as the crank pulley. make the engine easier to turn any way you can. use lightweight rims. do not use the air conditioning - ever. get a carbon fiber hood. use aluminum brake calipers. change the plugs evey six months. keep the tires properly inflated. ensure clean air passages. create a business out of your home office and commute six feet to work.

have a party. dress in a gorilla suit. wear a tuxedo to a skating rink. invent a new device. learn to sing backwards.

[Guest INASNT]

Originally posted by Roy

Are the RB25 BOV similar to RB20, as the RB20 have a rolled edge.  

I cant see how you could dismantle/reassemble, without ruining the integrity of the seal/rolled edge?

didnt seem to effect mine!

[Roy]

Ok, smack me on the side of the head, and excuse me for asking but are we sure it cn be done, its not a wallet lightening ploy.

It actually made a difference??? How can you be sure. Curious, i have an OE RB20 BOV laying around, i might rip mine apart and give it a go.

[Guest INASNT]

well i have had mine pulled apart 3 times, 1'c to get recoed, then to get blanked off coz of blitz bov and then to get unblocked when i pissed the blitz off!!

[HSVKLR]

Serious?? BOVs cause sh#t fuel consumption? Ive never thought about it.

I use to get 450-520km when i first got the car (stock BOV) but now im lucky with 350km and currently its half tank and im on 144km!!!!!!!! Ive now got a TurboSmart V-Port II (sounds wicked) but could it be the cause of bad consump?!

[adam 32]

BOVs cause overfuelling as air which has passed the AFM doesnt enter the plenum.

[Roy]

I got 510kms this morning before i filled up (Monday morning ritual). About 200kms were highway, and I have an Apexi Twin Chamber.

I dont normally let it run that low unless i have drive out to Mudgee etc, etc (all highway kms, then i get between 580-610kms)

I understand you can take the BOV off the car with no probs, but actaully dismantle the BOV?

I imagine to blank off they simply put a 2-3mm plate under the BOV flange. To unblank they simpoly remove the plate. They are not actaully tampering with the internals of the BOV. Or are they?

[Guest INASNT]

roy

the bov is just a pop off valve, u can service valves quite easily

[ScarifieR]

yeah piss the vee port off

go get a dual port turbosmart or a gfb hybrid

thats what im gonna do

have the best of both worlds