When the RTEK just came out, it reminded me of the Kinghtsports ECU which basically was tuned for the Knightsports hybrid turbo so that is where the idea came from; However, a website to upload predetermine would be great for people to be in range of similar set-ups:)

Palm OS, are you kidding? What year is it? Ever heard of Laptops?

Thank you for your insightful post, but theres no reason to post it in multiple topics..

so yea...I'd say:

-AFM removal
-Ability to upload maps to the system without having to actively put them in while hooked up to the ecu
-An "auto tune" capability with a wideband hooked up.

You do notice that it started as POCKETlogger right? I think they have always tried to keep the interface for the palm. Maybe find a "emulator" for the palm in windows, or (god forbid) Mac.

that would be awesome.

but afm convert to map would be the most needed by everyone so we can run those bigger turbos and a more defined rpm range for fuel tuning

i.e. 0-500 and 500 increments to red line not 6600

I think something really useful would be a windows program that you could open the maps.pdb file.. so you can edit the fuel and timing maps easily on PC, then transfer them back to the palm

auxiliary activation possible?

Can we raise the rev limits on the S4 Rteks?

can we get 2.1 before the end of jan

Now I'm a little confused. Lets use the 1.7 as the example.

If all it's going to do is mimic the stock injectors, why go any bigger than 1.5? Will it still flow 720cc when needed, or is it only flowing 550cc from a bigger injector?

Flows as stock, but with bigger injectors.

Im gonna be an ass and request that it work with S5 TII cars

exactly, thats what im talking about. i think you really need an external AFC or something with the 1.7 and 1.8, unless rtek put in their own custom fuel map

I think the advantage of the 1.7 is that when running bigger secondaries, it creates a far better secondary injector staging transition than what you would be able to do with just an external AFC. but as far as the fuel map, your engine wont see any more fuel than stock. now the 1.8 has the same pri's and sec's so it does not have this advantage

First, you have to understand that a 720cc injector flows more fuel than a 550cc injector. Say your pulsewidth is 5ms on both injectors, what injector is going to inject more fuel per "squirt"? Now, take an ecu that's programmed for 550cc injectors and install 720 cc injectors, what's going to happen? You're going to run very rich because the pulsewidth does not change, so more fuel is being injected per "squirt". The 1.7 and 1.8 compensate for this by backing off the pulsewidth so you don't run rich. Rtek, or any reprogramed ecu for that matter, compensates for this by decreasing pulsewidth on the larger injector to correct what would be an overly rich fuel mixture.

This written for the fellow who *wished* for a way to keep out of closed loop while tuning (I assume he pulls the 02 sensor wire presently). Well if you go to the pin on the ECU that is for the NEUTRAL switch, and install a wire in the socket with the present wire, and them put the other end of the New wire to gnd, then the ECU won't EVER go into closed loop. You migh want to install a switch in line with the new wire so you can flip the switch and now have closed loop available

I wrote the above on another thread on this RTEK forum.

And.........screw LAPTOPS and loading someone elses maps. There are other businesses that use Palm's for tuning. It's not that unusual. Saw one on the Speed Channel just a month or so ago.

But think of it on the engine side..

1) 550 injector on stock ECU:
ECU wants 10% d/c, sends 10% d/c to 550 injector = 55 cc fuel

2) 720 injector on stock ECU:
ECU wants 10% d/c, sends 10% d/c to 720 injector = 72 cc fuel

3) 720 injector with rtek 1.7 or 1.8:
ECU wants 10% d/c, sends 7.5% d/c to 720 injector = 55 cc fuel

now what is the difference between 1 and 3 as far as the amount of fuel the engine sees? no difference.

now imagine an engine with full intake/exhaust, 10+psi. If you ran setup 3 it would POP

The same can be applied to the 2.x presets with 0% correction

Correct, we use larger injectors to lower duty cycle. When we flow more air, we want more fuel, no? Stock injectors go static with minimal mods. In other words, when we hit 100% duty cycle we lose the ability to supply the engine with more fuel because the injectors are flowing at their maximum.

There's two ways to overcome this:

-Increase fuel pressure thereby increasing injector flow. People do this with an FMU and raise the pressure at ratios higher than 1:1

-Upgrade our injectors so our duty cycles are lowered thereby increasing fuel flow.

So, at the point where the 550s are at 100% duty cycle, our 720s will be at roughly 76.67%. We have another 23.33% duty cycle to go before the injectors go static which means we have the ability to supply more fuel than the 550s.

I think where you're getting really confused is how the ecu calculates fuel. The ecu calculates load and looks up a fuel value on the map at that specific RPM to come up with pulsewidth, not duty cycle. Duty cycle is a function of RPM and pulsewidth. It's a number we use to determine the sufficiency of a particular injector for a given engine.

To correct you:
1) 550 injector on stock ECU:
ECU calculates 5ms, sends 5ms to 550 injector = .046 cc fuel

2) 720 injector on stock ECU:
ECU calculates 5ms, sends 5ms to 720 injector = .06 cc fuel

3) 720 injector with rtek 1.7 or 1.8:
ECU calculates 3.8ms, sends 3.8ms to 720 injector = .046 cc fuel

There's no difference between 1 and 3, but we WANT it that way, otherwise we would be running rich all of the time.

What it all comes down to is that the ecu programmed for larger injectors will always supply more fuel, when needed, than stock injectors.

I disagree and/or we are just not understanding each other; the fuel map on my 2.0 is proof injector presets alone are not adequate. but i suppose I should stop jacking this thread heheh

If you ran setup 3 with the aforementoned mods, before you start the car, why would you just add correction?

I won't disagree with that, but it has nothing to do with your original claim.

my original claim was that adding more injector presets for 2.1 is pointless for the reasons i have already mentioned. like turbo2ltr posted, DTI is not in the business of tuning, they merely provide the capability

I'd like to see an adjustable launch control option on the next Rtek ecu. It would also be nice to have some expandability on the TPS options, as in replacing it with another TPS from another mazda car.

Your reasoning is poor because you have no idea how EFI strategies work. It's clear I'm not getting through to you, and you refuse to learn why you're wrong.

I like my idea the best

Instead of giving the S4 guys even more features, why dont you show the S5 turbo guys some love