Okay....clearly no one knows anything about this company or has taken the time to look up. I had to PHYSICALLY send my ecu to California and they remapped it there. All proprietary.



I actually first sent them my transmission ecu by mistake but they were kind enough to tell me of my mistake and I sent them the engine ecu. I was going to get a dyno before and after but I just finished installing my new struts the day I went back to school so I didn't have the time.



Before you start demanding that I show you conclusive evidence and data to prove that this does work, how about you guys do a little research? I am only speaking from my own point of view. In addition, all the people who have had experience driving my car before the upgrade can see and feel the difference.



If I had listened to any of you i wouldn't have gotten the remapping and wouldn't have been so happy with the improvements made to my car.

 

I would love to know more about this. Please, post up the companies website address so I can do some research and learn more!

 

The skepticism is very well-founded. There have been MANY companies claiming to reflash the RD ECM and it ended up being a resistor to fool the computer until it relearned how to read the sensors, or left a permanent lean condition or similar foolishness.



To date, NO-ONE has produced a verified reflashed ECM. LOTS of companies have claimed to and they were approximately 100% full of it.



Hyundai didn't make it easy to know what to do. To reflash the ECM you need to know what's inside the PROM to begin with. They didn't tell. A company would have to reverse-engineer the programming in its entirety, and the market is too small to make it profitable for its own sake. If someone at this company did the hard work because they wanted it done for their own car, or if they wanted to make a living doing a reflash service, they deserve every dollar they get from everyone who still drives an RD. Until somebody shows up here with company information, photos and dyno graphs that also show fuel trims, expect a VERY cool reception from those of us who have been here long enough to have seen this movie before.

 

bro... you came here and made claims. We're asking you to explain yourself because you REALLY suffer at providing details. Being in the Hyundai community for over a decade I've never heard of this company, so you have to realize our skepticism.

 

Surely!



This is the main site:



http://www.jetchip.com/



The thing is, for the upgrade packages you don't have to pay the retail price. Other distributors offer the product. I found the cheapest price on amazon.com. MSRP ~400? Amazon ~$250?



The page has testimonials but take them as they are. They inherently lack a certain degree of credibility when the testimonials are hosted on their own site, so like i said, take them as they are. They do have references to other third parties who review their products and you can always Google the product reviews or find reviews on different forum sites, regardless of car make. ex Honda or Jeep



This is what I gathered, from weeks of research, when it seemed that someone did not see results.



1. They already had a car pushing out a huge amount of power. Ex 250-400 hp.



A gain of 10-15 is not very noticeable in this case. Like you won't be able to feel it. Suppose you had 250 HP to start. Hypothetically with this upgrade you get a max of 10 HP. Now when you're trying to squeeze every ounce of power of your car, this is a gain but you probably won't be able to feel it. The more power you're already pushing out the less you will feel it.



Lets do some math...



Original hypothetical car - 250 HP

After Jet Upgrade - 260 HP (conservative)



Gains - ~4% gain in power. (might not feel it)



But for my car (kept stock), originally specified for 140 HP. With a gain of 10-15 HP i would be able to feel it.



Original - 140 HP

After Jet Upgrade 150-155 HP



Gains ~7-10%



2. People decided to get the ECU remap, then threw on headers, cai, performance exhaust, light weight fly wheels, bbtb, etc.



Jet Performance specifically asks to know what modifications you have done to your car. They take this knowledge and then tune your car to compliment these improvements. So i'll throw up some more numbers. I expect, now this is conservative now, that with my current modifications prior to the ECU upgrade: AEM CAI, NGK iridium sparks plugs, and the Bosal aftermarket exhaust, i was maybe pushing out ~150 HP. So again, lets do some math...



Original - 140 HP

After upgrades NOT including Jet Performance upgrade - 150 HP



Gains - ~7% gain in power.



Then after the ECU remapping...



Original ` 140 HP

After ECU remapping with current aftermarket parts upgrade - 160-165 HP (conservatively)



Gains - ~14-17%



IN CONCLUSION you may not 100% agree with the numbers exactly but i feel like i am being completely conservative mind you. And regardless, i can feel the improvement. I haven't run a dyno but honestly i don't feel the need to. I can feel the difference and that's the only thing that matters to me. If someone else wants to give this a try, perform this experiment with a more scientific approach, ex Before/after dyno be my guest. But you wont get that from me.



Hoped this helped someone who has been doing research for a while like i was.



Cheers!

 

I know that i am far from an expert, far from an amateur even. But claiming that a product does not work just because of experience "in the Hyundai community" has no basis. No researcher or expert, no matter how esteemed they may be, can justifiably say that a product does or does not work without supporting evidence. New performance products are made every day, 99% of them are crap, but knowing this and having previous knowledge of some products doesn't give you the credibility to say a product will not work without the backup of credible evidence.



I didn't go through the most scientific testing that would be required to validate that this product's 100% legitimacy. You're experience may differ, but I can say however, that through personal experience from this exact product, that i have noticed improvements.



Skepticism IS very well founded and i welcome that, so do the research.

 

What the f*ck dude, did you even read this thread?



Get the cactus out of your ass and release the butthurt. I never said it didn't work. I simply explained why a rational person would be skeptical.



You asked for our advice, and we advised. If this was my car, I would NOT trust a company with $250 of my money to do anything to my ECU. Resetting the ECU has a noticeable impact on driving the car, and more precise transmission changes? The TCM should not be impacted by your ECU being reflashed. Sounds like placebo effect to me.

Any claims on the butt dyno must be supported by dyno sheets, otherwise nobody will believe you. This is the law of the internet. Love it or hate it, it is what it is.

 

Well that escalated quickly...

 

 

I must compliment you however. I don't see how you quoting my quote had any relevance, but your ability to change text to bold was truly outstanding. Bold move sir, bold move.