Sportsguy's LS2 Swapped BRZ

[lbroskee]

Originally Posted by Sportsguy83

I think you don't understand what Duty Cycle means. Duty Cycle is a value that tells you the amount of time the injector is open when compared the amount of time it takes the engine to complete a revolution. That time will vary with each RPM. A lower duty cycle only tells you that the injector is opening very little time, which is a good thing. So to paraphrase your statement, To lower the duty cycle, you need bigger injectors.

With that in mind, from your statement, what that means is, to be at 80% duty cycle you need 640 cc injectors and to be at 65% duty cycle, you need 787 cc injectors. And again, those numbers do not apply to us because the DI system injects fuel at a high pressure, and takes the bulk of work off of the port injectors.

so basically all these calculators are useless for us. because the data each gives me is so far off from what makes sense. i think that may be whats throwing me off at least i know im on the right track even tho i didnt realize it lol. now if only i could find a way to incorporate DI into these dam equations

[Sportsguy83]

Originally Posted by lbroskee

so basically all these calculators are useless for us. because the data each gives me is so far off from what makes sense. i think that may be whats throwing me off

The info you find on the internet in pages that say "injector calculator" do not apply to our cars because they consider a car that has ONLY port injectors.

I am showing you with hard data (my duty cycle), how far off are those calculators from our car. The DI pump is a Godsend

[lbroskee]

Originally Posted by Sportsguy83

The info you find on the internet in pages that say "injector calculator" do not apply to our cars because they consider a car that has ONLY port injectors.

I am showing you with hard data (my duty cycle), how far off are those calculators from our car. The DI pump is a Godsend

i see that. i know ur getting at least 300HP and only on 500CC. the difference is just too good to b true honestly

[killerkid08]

Using the calc,

70% at 8 psi - 7000 rpm
60% at 8 psi - 4600 rpm

All stock

[lbroskee]

Originally Posted by killerkid08

Using the calc,

70% at 8 psi - 7000 rpm
60% at 8 psi - 4600 rpm

All stock

thats on 550cc?

[Sportsguy83]

Originally Posted by lbroskee

thats on 550cc?

I believe All stock.

Sent from my HTC One X using Tapatalk 2

[lbroskee]

Originally Posted by Sportsguy83

I believe All stock.

Sent from my HTC One X using Tapatalk 2

thats not bad at all. all this info makes me want to go buy an ECUTek cable and just sit in the car for hours reading data

[killerkid08]

Originally Posted by lbroskee

thats not bad at all. all this info makes me want to go buy an ECUTek cable and just sit in the car for hours reading data

Lol., drive it and log it. Then study it. Double the pleasure, double the fun.

And yes, all stock.

[lbroskee]

Originally Posted by killerkid08

Lol., drive it and log it. Then study it. Double the pleasure, double the fun.

And yes, all stock.

with FA20Club office literally 4 minutes from my house it's not very cost effective to buy it just for that tho lol

[killerkid08]

Alright, enough thread jacking from me tonight. I'm gonna patiently wait for a new map with OB set to 12 psi and see where 9 and 10 consistently put the fueling % at. I will base that off what I have at 8, and that should give a decent gradient for fueling needs as boost pressure increases. (Kinda)

[Sportsguy83]

Originally Posted by killerkid08

Alright, enough thread jacking from me tonight. I'm gonna patiently wait for a new map with OB set to 12 psi and see where 9 and 10 consistently put the fueling % at. I will base that off what I have at 8, and that should give a decent gradient for fueling needs as boost pressure increases. (Kinda)

Going 9-10 on stock fueling, man you got some balls. If it were my car, no chance in hell I risk it. Remember duty Cycle is not the only variable to look at for fueling needs, volume of gas injected is critical too.



IMHO.

[killerkid08]

Originally Posted by Sportsguy83

Going 9-10 on stock fueling, man you got some balls. If it were my car, no chance in hell I risk it. Remember duty Cycle is not the only variable to look at for fueling needs, volume of gas injected is critical too.



IMHO.

You may be right about that but if the ports have an additional flow of 10-15 safe range, why not tax them and see where they go? The gas here in GA is good, so I really don't have to worry about blowing up from crap gas. What's 1-2 more psi? Must push the bleeding edge for the masses. lol

[Sportsguy83]

Originally Posted by killerkid08

You may be tight about that but if the ports have an additional flow of 10-15 safe range, why not tax them and see where they go? The had here in GA is good, so I really don't have to worry about blowing up from crap gas. What's 1-2 more psi? Must push the bleeding edge for the masses. lol

Good points, very interested in your results.

[killerkid08]

Originally Posted by Sportsguy83

Good points, very interested in your results.

Just waiting on J-V for the new map.