i just realized your from hialeah.........man u need to check out http://www.sfl240sx.com
there are some peeps on that board that also have ka-t's. i myself would probably help ya but im out of the country for a while. check the local forums as there are ka-t's near to u.
how bad are these afr's?
I'd be willing to bet good money that he'll get good power and efficiency with a WOT AFR of 12.5:1, since he's only running 6.5psi on that little T3. 11.5:1 would really just be a silly waste of fuel.
I'm with the others on the rest, however. Get some direct drop in sidefeeds and tune it up with the E-manage.
To the poster of this thread, specifically:
The 240sx is equipped with a rising rate fuel pressure regulator, set on a ratio of 1:1, meaning that for every psi increase in manifold pressure, the fuel pressure is increased 1psi. This makes certain that the delta P across the injector is consistant, regardless of manifold vacuum/pressure. For example, if you're running 43psi @ 0 vac (atmospheric), then you have a delta P across the injector of 43psi. Add 10psi manifold pressure and the fuel pressure will rise to 53psi, as a result of the 1:1 regulator calibration. This still achieves a delta P across the injector of 43psi.
Without the constant delta P, you'll run into issues calibrating the tune and you'll never have the right flow.
I'm with the others on the rest, however. Get some direct drop in sidefeeds and tune it up with the E-manage.
To the poster of this thread, specifically:
The 240sx is equipped with a rising rate fuel pressure regulator, set on a ratio of 1:1, meaning that for every psi increase in manifold pressure, the fuel pressure is increased 1psi. This makes certain that the delta P across the injector is consistant, regardless of manifold vacuum/pressure. For example, if you're running 43psi @ 0 vac (atmospheric), then you have a delta P across the injector of 43psi. Add 10psi manifold pressure and the fuel pressure will rise to 53psi, as a result of the 1:1 regulator calibration. This still achieves a delta P across the injector of 43psi.
Without the constant delta P, you'll run into issues calibrating the tune and you'll never have the right flow.
Re: (KATwo40)
And for those who don't know what a "delta P" is.....KATwo40 wrote:
To the poster of this thread, specifically:
The 240sx is equipped with a rising rate fuel pressure regulator, set on a ratio of 1:1, meaning that for every psi increase in manifold pressure, the fuel pressure is increased 1psi. This makes certain that the delta P across the injector is consistant, regardless of manifold vacuum/pressure. For example, if you're running 43psi @ 0 vac (atmospheric), then you have a delta P across the injector of 43psi. Add 10psi manifold pressure and the fuel pressure will rise to 53psi, as a result of the 1:1 regulator calibration. This still achieves a delta P across the injector of 43psi.
Without the constant delta P, you'll run into issues calibrating the tune and you'll never have the right flow.
Basically, in boost, the pressure in the manifold pushes against the incoming fuel from the injector- which reduces flow. To counteract this, the fpr increases the fuel pressure in the rail by the same amount that's in the manifold, so that the pressure in the manifold, and the extra pressure in the fuel rail "cancel out".
The same happens when the car is in vaccum, but opposite. The manifold SUCKS extra fuel from the injectors, and so the fpr reduces the pressure in the fuel rail by the same amount in order to "cancel out" this condition.
I don't mean to talk down to anyone, but hopefully now the guy who took off his fpr vacuum line understands..
The fpr allows the ecu to determine pulsewidth solely by load(air flow) and rpm, without having to worry about adjusting pulsewidth due to the extra/less fuel added due to the vaccum/pressure of the manifold. I hope I made that clear.
well after the reeming i got yesterday i put it back on. the afr's came down a tiny bit, but are still in the high 14's @ wot. i am on sfl240sx, actually going to our monthly meet tonite. most of the guys down here have taken their cars to a shop. needless to say the shop i Had my car in. i asked the only guy i know that tunes his own **** if he would help out with the emanage, but i got no answer. thats why i was hoping to just get rid of the blue and get a willems, socket the ecu and burn my own chips. to me it's the most logical way to tune for ur own application. and it's cheap. but like i said i know nothing about k values and tp and all that s@$t. and i definately don't trust myself to solder up anything to my computer. i figure i can razor blade my clips like some guys do to drop in the 550's, but that wont do me any good without any management.
Re: (TurboKA37)
ka's are badass huh.TurboKA37 wrote:you've been running your car with this turbo setup with no fuel management for four months and your car still runs?
what shop was ur car in? i suggest Speedlab down there as the electrical guy down there is top notch. Mark (the owner) is a very cool guy and would be more than willing to take on the job of installing your emanage. They also have an in house dyno so u could maybe work out something with them and the tuning.............
check the sponsor section on sfl240sx for their contact info.
check the sponsor section on sfl240sx for their contact info.
Re: (virus77)
i'm trying to trade the blue for one or get cash. no offers yet..virus77 wrote:at least get an safc and some 370's and call it a day, easy tune.
Re: (Jookmasta)
yeah, he was more than willing to take on the job. but was never willing to finish it. last night at the meet i heard that he got closed down.Jookmasta wrote:what shop was ur car in? i suggest Speedlab down there as the electrical guy down there is top notch. Mark (the owner) is a very cool guy and would be more than willing to take on the job of installing your emanage. They also have an in house dyno so u could maybe work out something with them and the tuning.............
check the sponsor section on sfl240sx for their contact info.
really? wow. it really does suck to hear that as there is a VERY big market for 240 work down there and unfortunately there is not a shop that truly specializes in em. the only other one i know of is backyard productions but i've heard anything about them in a while.
sux to hear that he didnt finish the job tho...........
sux to hear that he didnt finish the job tho...........