425KW Turbo EA Fuel Consumption Very Good

Eaturbo · 14-08-2005, 01:57 PM

Did a run today for about 100km on the highway and was pleased with fuel economy, 9.8L per 100km on Hway at 105km/hr and average about 15.9 around town, so it goes to show you dont have to use alot of fuel just because you have a fast car

niko · 14-08-2005, 02:03 PM

sounds better than stok ea 3speeds lol

LUXO_8 · 14-08-2005, 02:49 PM

sounds like great economy....

mines around 8-10l/100 on the highway.

wish it had 400+ kw though!!

PULLY6 · 14-08-2005, 02:50 PM

Great economy mate!

Unfortunately - the same rule doesn't apply to the 8's :P

CruizinEB · 14-08-2005, 03:16 PM

thats Great economy mate

sphell · 14-08-2005, 10:26 PM

that's awesome. hows it go when you put the boot in though?

needturbo6 · 19-08-2005, 12:07 AM

Quote:

Originally Posted by sphell

that's awesome. hows it go when you put the boot in though?

id imagine youd be able to see the needle move... i too would like to know just how much it can use. awesome economy figures by the way!

just 4 interests sakes, the 800HP CAPA supercharged BA XR8 ute got 14.2L per 100ks on a 2400km journey. with severel bootfuls to pass "double-semi" trailers...

EFFalcon · 14-08-2005, 11:26 PM

amazing what a good tune does ;)
if you're not using the power, theres no reason why it'd chew it all!

ilsautomotive · 15-08-2005, 01:18 AM

Very good to know. Someone was saying that even if an engine is revving a bit high on the highway, it isn't actually on boost unless you give it a bootful.

4.9 EF Futura · 15-08-2005, 01:33 PM

Quote:

Originally Posted by Trouty

Very good to know. Someone was saying that even if an engine is revving a bit high on the highway, it isn't actually on boost unless you give it a bootful.

Correct. Boost will not build whilst the BOV is open. The BOV only closes when no/little vacuum is present (ok, not a hard/fast rule but thats the general operation of them)... hence, only when you sink the boot in does the BOV close and pressure builds in the manifold.

15-08-2005, 01:29 PM

Quote:

Originally Posted by Eaturbo

Did a run today for about 100km on the highway and was pleased with fuel economy, 9.8L per 100km on Hway at 105km/hr and average about 15.9 around town, so it goes to show you dont have to use alot of fuel just because you have a fast car

how do you get such good fuel economy?? what did you do or use =D

EFFalcon · 15-08-2005, 01:32 PM

with an aftermarket computer, you can tune the air fuel ratio's to be spot on what they should be.
if you look at a stock cars air fuel ratio's, they're by no means optimal.
by adjusting them with an aftermarket computer you're going to get better fuel economy and a better fuel burn, thus more power.

if a car has 400rwkw, it doens't mean its using all that power all of the time.
it takes just as much power to shift a 1.5 tonne object no matter how much power the actual engine makes. but by optimising what the engine does with its supplied fuel, air and spark, you can get better then stock fuel economy.

its all in the tune.

Valknutr · 16-08-2005, 06:59 PM

Quote:

Originally Posted by EFFalcon

its all in the tune.

is that like its all in the hips :nutsycuck

INJECTED_250 · 15-08-2005, 01:50 PM

But even with no bov on cruise it wont boost, as the engine isnt flowing enuf air to spool the turbo up.. The bov has nothing to do with it.
On a supercharged car it may be differnt.

sphell · 15-08-2005, 11:02 PM

Quote:

Originally Posted by INJECTED_250

But even with no bov on cruise it wont boost, as the engine isnt flowing enuf air to spool the turbo up.. The bov has nothing to do with it.
On a supercharged car it may be differnt.

spot on, bov doesn't play any part in the engine making boost. it only releases the pressure in the manifold/intercooler when you back off the throttle suddenly so the pressure isn't forced back through the compressor wheel. Its the same in a supercharged car.

you can have the engine revving at 5000rpm on light throttle and it will not be making any boost. It will only boost when load is applied and it will keep building and building until a certain point until the wastegate starts to bleed off the excess exhaust gas. Without a wastegate the boost would keep rising until engine failure.

EDXR8 · 16-08-2005, 01:39 AM

Quote:

Originally Posted by sphell

spot on, bov doesn't play any part in the engine making boost. it only releases the pressure in the manifold/intercooler when you back off the throttle suddenly so the pressure isn't forced back through the compressor wheel. Its the same in a supercharged car.

On a supercharged car it is different, a supercharger doesn't rely on load etc it is purely on engine rev's. So at 5000rpm, a supercharger will always output the same amount of air no matter what the engine load is, and the bov/bypass vents all this off therefore controls boost. Sink your boot into it, manifold vac dissapears, bov closes and you have boost.

sphell · 16-08-2005, 06:43 PM

Quote:

Originally Posted by sphell

Its the same in a supercharged car.

my mistake :togo:

gozza · 16-08-2005, 06:56 PM

ive got headers hi flo cat a resistor in my air sensor
on the highway i average around 8L/100k
i do a lil bit more city driving than highway and my average usually sits around 11-12L/100K

gozza · 16-08-2005, 06:57 PM

oh yeah its a 6
and that involves using as little throttle as possible at all times haha

Eaturbo · 19-08-2005, 08:14 AM

Its got dual row injectors so 12 injectors fire on full throttle, so whats a v12 550hp engine like on fuel at full throttle,i dont want to think about it

TuMor · 19-08-2005, 07:43 PM

Quote:

Originally Posted by Eaturbo

Its got dual row injectors so 12 injectors fire on full throttle, so whats a v12 550hp engine like on fuel at full throttle,i dont want to think about it

Does that setup erase the need for an expensive ecu?

Eg, having a second row of injectors controlled by another cheap "piggyback?" ecu??

Im in the planning stages for a turbo setup, and have been researching the fuel system options...