defleshed

I'm looking to upgrade my injectors, at the same time i will be upgrading turbo's as well, going to use my 62/14/65 over a s400.

i want to upgrade injectors to help the low end, and i would like to make some decent power, but i still like to turn everything down for highway trips, and get good fuel mileage. I'm thinking 1.6, 1.8's, but i'm wondering at what point does fuel milage start to suffer? i know small sticks actually help with mpg, but i don't know when the injectors start to drop fuel milage, with everything else being the same. any help or input would be appreciated. thanks.

05CTDN8

I hear 1.7 or 1.8's are sweet for performance, milage and egt levels....when I have 1100.00 to blow I am getting those!

soulezoo

1.8 is what has been discussed as the threshold where mileage starts to suffer.

defleshed

so would it be safe to say that a flux one would be better mpg then stock, and a flux 1.8 would be about equivalent to stock mpg, but with more hp, and 1.6 may get a bit better then stock mpg, with just a bit less power then the 1.8's? i can only guess that in the 1.6 - 1.8 range the difference, mpg or hp would be very slight?

mdavlee

I could get around 20 with flux 3s a 64/71/14 and smarty beta 4.4.

agregersen

i got slightly better mileage with my flux2's

defleshed

thanks for all the input guys. anybody else?

FarmerJim

I put in Flux 1s (40HP) injectors and got around 1 mpg better empty and 2 mpg better towing plus lowered egt. They sure woke up the bottom end on my truck. I have TST but only run it on 2 power and 2 torque but the fuel duration does not kick in untill 12 pounds of boost whereas the injector upgrade is there from the start.

BossHogg

I have 1.8's and they seem to be that balance your looking for between power and mpg. I can't say for sure if they helped mpg, as I also installed a cam, springs, studs, and intake horn at the same time. I do think injectors are well worth it, and will make a pretty noticeable difference. As Farmer Jim stated, he only saw about a 1mpg increase with the 1's...so if thats the case I'd definately go with something bigger if power is your overall goal.

XLR8R

We're running F5.1s with HTT's 62/65/13SS over an S475 - 17mpg highway, only smokes if you want it to... lots of special parts/work on the engine, though.

defleshed

LOL, i'll keep that in mind, but i was thinking of something a little more reasonable.

i guess it's good to know that it's possible to maintain decent mpg with serious hp!

cquestad

5's are way reasonable...come on now!!!!!!!!


;-)

defleshed

coming from a guy who's signature ends in ...

it's kind of like picking a fight with someone who's ears look like scramble eggs...

XLR8R

When Don's oval holes become available, a lot of folks will be stepping up Flux sizes.

elirandolph

Could you elaborate?