Dweet, I'd appreciate it if you'd read all my posts before replying.





Most of your post talking about how it would suck if I just changed timing is then irrevelant. I've said like 5 times that you can run any injectors you want, so of course I can play with fuel too.



It's apples and oranges to you. For me it's red and green apples wink1.gif



Did you check out the DSM-Link? It seems not, because you yet again seem to misunderstand what's possible with a reprogrammed ECU. Please, take a look at the links I posted before replying on this topic again. Your chip has NOTHING to do with a true "remap" of a stock ECU. Your chip is what I'd call a "convenience chip". I'm sure people reading this thread has understood that by now.



First, you of course know nothing about our ECU being stubborn or not. What you know is that PowerChip didn't do their job right. That's all you know. An ECU can't be "stubborn"; you're either able to play with it, or you ain't. In order to be able to play with it, you must understand the software that's in it, then you can modify it.



Again, please read my previous posts. I totally agree with you on that, and already said it wink1.gif Nowhere did I try to prove that it's possible on Hyundai's; on that I clearly said that we'll just see. However, what I did prove is that it's possible for almost all the brands of ECU on the market today to do what I'm talking about. Again, if you fail to see that, please re-read my post.

On that point, you're arguing alone wink1.gif

Have a good day anyway wink1.gif

 

Okay, maybe now that everyone has calmed down we can make some sense of what is going on.

Basiscaly Agarwal is saying that we can re-program our ECU's to accept different timing, fuel loads, and pretty much anything the stock ECU controls. But what happens when the chip goes down. Or you have a problem?? LeadFoot's problem was this "P0605: Internal Control Module Read Only Memory (ROM) error". So let's say we get something like that. The average tuner has no idea how to reprogram an ECU that has a flaw in it. Agarwal stated that that is Powerchip's fault. I agree, but no thing is ever perfect.

I think that rechipping the ECU is a great way to make hp and manage fuel, timing and the rest. But there is a big problem with fine tuning. An SAFC does that to an extent, and the standalone was created for it. If we have access to an open-source way of rechipping our ECU's then that's awesome, for the time being I'll stick with standalone.

 

Or course, with a stand alone you have the ability to tune the car yourself. That's something you do not gain with a "chip", altought it IS possible to achieve such configurability on a stock ECU (see the 3 stock to stand alone links on one of my posts).

I'm not aiming at that for now, anyway, so if what you want is tune your car on a daily basis rather than do it once, get it right and forget about it, then a standalone is the right solution.

You have to see that it's not in the same price range, though.

I'm not saying that if I'm sucessful on what I'm trying that I won't offer some kind of "user tunability", but of course that would cost more than a "simple" chip.

 

lol, so much text, took me a while to finish reading it all 8O , I get both dweet´s and argarwal´s points. now what I think is this, if you can completely reprogram the stock ECU in real time (timing, af maps, etc.) then what you have is a stand alone, now think about it, how much time did you spend looking at the nooks and crannies of your stock ECU and compare it if it would have been easier to just buy a stand alone or a piggy back, and invest that time in just tuning the computer. not everybody has time to start messing with a stock ECU so they can reprogram it completely if they can just buy a piggy back or a stand alone to do the job, I don´t think argawal´s point of view needs proof so it can work, I would think it would take lots of time into knowing how the stock ECU electronics work, figuring out the language, etc. I would think that the ppl who build stand alones could just easily build a non tunable ECU like stock ECUs based entirely on their standalones blueprints. My logic tells me that what argawal is saying IS possible, but is it worth the time to the average tuner to do this? no.
Also remember that all that I have been talking about is that if you could mod the ECU to make changes in real time, most of the chiping companies ask you for the ECU, put a reprogramed chip and then send them back, wich is like an educated guess, and that is what I think is happening to leadfoots issue, I bet they would of had no probs if they were in the same area leadfoot lives.

Lol this turned out to be really long
botom line
Yes it is possible to reprogram a stock ECU to your needs
Is it worth the time you invested in learing the nooks an cranies to be able to reprogram you stock ECU if your goal is to just tune your car. NO
Is it worth it if you want to make a bussines out of reprograming stock Hyundai ECU´s, then definately yes.
I think the phrase "you can do anything with eanough money and time" comes into play here...
I´ll shut up now hehehe oops.gif

 

Cuervo79, well, call me crazy, but I actually enjoy doing such things as cracking a stock ECU wink1.gif So, considering this, is it worth it? Sure is. I also like the fact that it would cost me $0 versus ~$1500+ for a stand alone.

The point here is that if my tests actually works, the end-users WON'T have to go through the "cracking" part of the process to get a reprogrammed ECU. That part would have been handled by me. Like I said, it would be possible for me to make custom chips for almost any kind of setups.

Also, on a side note, I've been in contact with LeadFoot and I know what the problem of his chip is. I'm actually currently trying to fix it. I can tell you this, however; all they do is advance the timing (by a constant factor throughout the rom range). The problem that LeadFoot has clearly indicates that they only just apply a "pattern" to the stock ECU, and they they not dyno test it at all. Else they would have seen their problem in the first 5 minutes of dyno testing.

Company such as PowerChip "makes" chips for almost ALL brands of car; that's why that kind of chip sellers aren't normally that good, because they just apply "standard" patterns to the ECU and don't even bother to dyno-tune the thing. Now, companys who specialize in only one brand actually get their chips right most of the time.

 

So how are you going to crack the ECU and reprogram it?

 

The "cracking" part is 75% done, for the fuel and ignition parts; the way it'll be reprogrammed, at first, will be like most the companies do: you'll have to send the ECU, I'll socket it, and put the new chip in. It is important to note that maybe the 25% remaining will be litterally uncrackable, at least by me, so I don't want you guys to get *too* excited wink1.gif Better be on the safe side.

It IS possible to update the firmware through the OBD2 port (that's how Hyundai do it), so eventually and ideally that's how I'd do it (provided that I can crack the protocol used).

 

if you can do this you'll make so much money... im rootin for ya.. trust me id rather do this then spend the money on a stand alone and then have to install it

 

True, but I don't see how this will work, I hope it does but where are you getting the chips?? Are you taking them from other programs and adapting them to our ECU's?? That is where I'm confused, you can't just make them can you?

 

Yes, I can wink1.gif