JetChip ECU upgrade?

[esculatus]

http://www.jetchip.com/Customers/Customers.asp

I've seen this on one of the owners. Does anybody have any experience with this chip?

Thanks

[Mole]

its bull shissce.

don't bother buying a few resistors...

[Jaimster]

You get that chip and say bye bye to your car!

[SolaraT]

Why does everyone have such a negative aproach to Jet chips? The Solara on that link is Greg's and he is also a member on solaraguy.com / He seems to love it. I understand with a supercharger and wanting more boost and need a better engine managment unit that you can customize to unique specifications.

Would this not be good for an n/a'd car with no boost either?

Whats up?

Thanks,
Louis

[xyntax]

Is this Jet chip really just another one of those resistor rip-offs? If they call it ECU chip, then it better have something to do with what the ECU does.

I've read a post here long ago, I think it was by Flipside, that Toyota's ECU isn't mod-friendly. He mentioned how Toyota is very uptight about their ECU and people have had a hard time cracking it unlike other car manufacturers.

I'm asking this because I've read on other forums about ECU upgrades and they seem to bash on SAFC like Flipside bashes on GTECH units. Greddy's E-manage is "da crap" for these people saying they have better tuning capabilities with it. And believe me guys, there were people there who tune cars for a living. We even spoke with people from aftermarket manufacturers like Borla (Mr. Borla himself), Vivid Racing, Racing Beat, AEM and others. But that's a different story.

Bottom line is, if this Jet chip promises ECU mods on a Toyota, then chances are they're just as good as those $20 resistor rip-offs! Or maybe they're one of the few lucky ones who have worked around the Toyota ECUs.

anyone?

[esculatus]

I thought they said it's a replacement of the current ECU?? instead of a piggyback computer.

[SolaraT]

Is this Jet chip really just another one of those resistor rip-offs? If they call it ECU chip, then it better have something to do with what the ECU does.

I've read a post here long ago, I think it was by Flipside, that Toyota's ECU isn't mod-friendly. He mentioned how Toyota is very uptight about their ECU and people have had a hard time cracking it unlike other car manufacturers.

I'm asking this because I've read on other forums about ECU upgrades and they seem to bash on SAFC like Flipside bashes on GTECH units. Greddy's E-manage is "da shoot" for these people saying they have better tuning capabilities with it. And believe me guys, there were people there who tune cars for a living. We even spoke with people from aftermarket manufacturers like Borla (Mr. Borla himself), Vivid Racing, Racing Beat, AEM and others. But that's a different story.

Bottom line is, if this Jet chip promises ECU mods on a Toyota, then chances are they're just as good as those $20 resistor rip-offs! Or maybe they're one of the few lucky ones who have worked around the Toyota ECUs.

anyone?

You have to send in the ECU. Jets takes your ECU and reprograms it. No piggy-back stuff. You will be having downtime while they do their thing. This is the "CHIP" Jet offers. It's over $400.00 to do.

[xyntax]

$400?! The site is too slow, I can't stand it. What gains did they promise? Any dynos?

You guys should research this thing before dismissing it. I haven't, so I'm not saying "what a waste of money"... for now

[SolaraT]

Yeah definatly more to it. Checkout the FAQ section. It's good info about it. Or I can copy and past here...

Here is the one that most interested me...

What happens if I have or plan to install other aftermarket equipment?
Custom Programs are available if you have installed headers, intake manifolds, camshafts, large mass air-flow sensors, nitrous oxide systems, or any type supercharger. You absolutely need JET Performance Custom Programs with these modifications for both tremendous power gains over stock tuning, as well as to eliminate the probability of lean air/fuel ratios and excessive spark advance which are death to modified engines. Just call JET Performance and tell us all of your modifications. You do not need a Custom Program for engines that are stock or mildly modified. For example, high-flow air filters, cat back systems, or ram air scoops work perfectly with our Stage 1 or Stage 2 Power Tuning. If you suspect that your modifications would benefit from custom JET Performance tuning, call our customer service department at 800-535-1161 or email at sales@jetchip.com .

[Jaimster]

Plain and simple, Jetchip doesn't work good with out platform, many have tried to mess with the 1MZ Electronics for performance gains, but there is no proven gains without engine proplems in the long run! Please research more on this before you make a big mistake!

[Gadget]

See if you can get JET to tell you how they go about erasing and rewriting a non-erasable and non-rewritable chip?

There are chips that can only be written to once. Those are they type of chips used in the Toyota ECUs. They can not be erased and rewritten to.

My best info is that this can not be done and if JET is claiming that they are doing so, they are able to do something that is suposed to be physically impossible, so it would seem that there is a possible rip off going on here.

Gadget

[krawzyazn]

jet is an OK company i had one in my honda its ok i wouldn't pay for it agian and JET is not a resistor lol

[SolaraT]

See if you can get JET to tell you how they go about erasing and rewriting a non-erasable and non-rewritable chip?

My best info is that this can not be done and if JET is claiming that they are doing so, they are able to do something that is suposed to be physically impossible, so it would seem that there is a possible rip off going on here.

Gadget

Done. E-mailed them and will follow up with a phone call later this afternoon. I'll ask about the 1mz, & 5s

Even if it did work I already have my eyes on another application specific to a supercharger kit I want.

[JoeB]

My opinion on any chip is you have to look at it with an open mind. What is it they are supposed to do, and how is this particular one accomplishing it? I ABSOLUTELY believe that they could make a chip to improve performance. What the chip "should" do if done right is modify ECU controled parameters to make your engine run better. That quote earlier is right on, if you supercharge your car or otherwise significantly change the air flow or fuel flow, you need to tune your engine accordingly. These days, all those controls are locked in and controled by the ECU. That is why we use piggyback computers.

The difference is, the chip done right is done SPECIFICALLY for your car with the mods you have done to it at that time. Even if you got that chip specially for your car, what if you make more changes (as most of us do)? Then you can't change the chip or if you do, it's spending a lot of money to get it reflashed. Plus paying a very good tuner for his time to get the required parameters. Yes, I think A chip could help but only if it was done per the above and no changes were made. With a computer like the Split Second FTC1 or the Greddy E-Manage you can manipulate these parameters as changes are made. The Apexi S-AFC-II is fine but only controls fuel.

Gadget is right on, if our ECU's chip is a PROM, it is written to 1 time only. EPROMs can be erased and writen to optically again. EEPROMs can be erased and written to electrically again. The best is the Flash ROM which is simply reprogrammed. Given what we've heard about Toyota's reluctance to share the programming information along with Gadget's knowledge, I'm inclined to believe it cannot be reprogrammed.

So, if you choose to go with a chip, I would recommend you look into how they accomplish it, piggyback (waste of $20) or ECU replacement. If replacement, you need to find out what mods did they tune it for. Then you have to be satisfied that you will not be able to fine tune or re-tune it without a chip change or going ahead and buying the EMS you could have bought with that money in the first place. -JoeB

[xyntax]

It might be possible to create a piggyback module for Toyota's ECU. The module would simply take the data the ECU creates and manipulates it on it's own formula. If there's a company out there doing this, then there's a chance they are not BSing us.