680cc Injectors and gas mileage

[Marty van den Bosch]

Well I just finished my 1st tank on the new injectors.

I got 410KM from my tank - I usually get 425~450KM, so 5~10% lower mileage.

Factors that influenced this first tank;

1) I drove alot harder than usual (first tank and all ya know)
2) I used A/C for a bit
3) Car is only at 10PSI right now

I figure that if I balance out all the factors, and fine tune the AFC a little more in Lo throttle - my mileage will end up about the same as with my 450s.


....untill I run 20PSI  :wink:

[Artem Goloubov]

I get 250km on my tank!?!?! :shock:

That was before resseting ECU, I will monitor next time around see if it will improve.

[Jovan Ceklaj]

Artem, don't worry;  I can get anywhere from 400 kms a tank at 9 psi of boost to something stupid like 200 kms if I'm running 19 psi.  As soon as you up the boost a significant amount, you'll notice the gas mileage drop pretty drastically

[Marty van den Bosch]

Ya - Like Jovan said.

Once I hit 20PSI - I expect to drop quite a bit. HP ain't free.

I figure I will get around 330 or so then.

[Mike Meron]

i would pay to see 330 on a dyno from those mods.

[Jeff Armstrong]

How do you measure gas mileage on a dyno?  

I think he means 330kms per tank of gas.

[Matt Demick]

i would pay to see 330 on a dyno from those mods.

umm think he ment 33okm to the tank oh wise one

[Mike Meron]

upon re reading said post i realize the error of my ways...

[Marty van den Bosch]

I now have to set my Hi-Throttle SAFC-II setting to +1% at 5200RPM ~ 6400RPM to remove knock at WOT and 21PSI on 94 Octane.

I tell ya - there ain't no 450KMs coming from my tank any more  :cry:

It is slowly becoming a $10/day habit.....but then again I am over 300HP  :wink:

[Marty van den Bosch]

I got 530KM on my last tank  @20psi (FVT included - but driven hard)

[Artem Goloubov]

Wow :shock: that's a great gas milage on 20G @ 20PSI and big Injectors

What's your secret :?:

[Kevin Standeven]

fwd. and it's an evo 16g.