JetChip ECU upgrade?

by **SolaraT** » Fri Apr 09, 2004 2:25 pm

Ok. I e-mailed them and here is what they say. There hold time is ridiculous!!! They did read this thread...

"Not the case. Assuming the "chip" is not erasable or re writable, how is it
that the dealer reflashes the IN HOUSE??"

Joe is right about the sacrifice you have to do to use this with complete success. You would have to finish all the modifications you plan on doing and then have it custom made to fit your specs. Otherwise you would need re-flash and what not and can be costly...Here is what they said about that...

http://www.jetchip.com/DynoSheets/2000%20Camry%202.2L.PDF
You may need a newer version of Adobe acrobat.
. The ecu upgrades are all done per the application, in other words, do all the modifications you intend on doing before you get the ecu upgraded. That way the program can be set up for the specific modifications. Hp gains would be dependant on the extent of modifications.

For the record..I intend on sticking with what comes with the supercharger kit designed for the 5S-FE...and don't intend on going with JET's product. Otherwise I would get it if I were to stay N/A and complete my engine mods. I'm just trying to get information correct and put the facts straight.

•RIPP Black Box Preprogrammed (Fuel and timing controller no out side tuning required at all)

•RIPP 2 Bar MAP Sensor for exact ECU boost communication

As far as the 1MZ-FE goes... You can get the ECU reprogrammed for your specification from JET; however, keep in mind that you can't alter it unless redone all over again or reflashed as Joe stated. So it's pretty much up to you and how deep your pockets can go. An added benefit is that they can also remove your top speed limiter along with the other things they do to your ECU. Shoot if it cost $400 - $500 they better do all they can.

It's good that this has been discussed because there has been some confusion and this thread can house all pro's and cons with various ECU alterations. It would be nice to get Greg's input on this since he does have a JET application on his Solara S/C 1mz.

:turn-l:

by **MaxBoostSolara** » Fri Apr 09, 2004 8:08 pm

yo solarat... u did say u "plan" on just sticking with whatever the s/cgives u but if u r like me... it'll never b enough

by **SolaraT** » Sat Apr 10, 2004 5:30 am

Well I did not want to risk problems since I use my car daily. Ripp is going for a final stage to reach 300hp and hopefuly by that time I can slap it onto my car.

by **EricSol** » Sat Apr 10, 2004 9:27 am

I spoke to Jet a while ago asking one simple question, can you raise my redline? Answer is no. They can do no more to the Toyota ECU that can not be done by a piggyback controller. Jet is a complete waste of money for a TOYOTA.

by **Gadget** » Sat Apr 10, 2004 2:13 pm

I really think JET is flat ripping people off and here is why I feel this way.

A long time ago I obtained a spare ECU for my 4Runner and sent it to JET. I got it back with stickers on it. I popped that puppy in and there was no difference as far as I could tell, well except for the stickers.

I drove if for a week or so and then put my original stock ECU back in. Again no difference. This is when I became curious and started to look into this whole thing.

I learned that Toyota can not even reprogram a Toyota ECU. There is no way to do it because they use the write once only chips in it.

A few years back the EPA was unhappy about something to do with the emmission control system on lots of Toyota vehicles. Toyota basically thumbed their nose at the EPA in typical Toyota fashion and the EPA gave them a correction order to fix this problem. It was a software glitch in the vapor pressure recovery system. Toyota could not fix this since they can not reprogram their own ECUs. They changed their tune and worked out a settlement with the EPA so they would not have to replace every single ECU in every single Toyota in the US.

The good thing that came out of this is Toyota realized that they need the ability to "update" the ECUs in the future in the case that something like this would happen in the future. They decided to switch to reprogramable ECUs. This is a good thing for the aftermarket, but currently it is limited to the cars that they build in cooperation with GM right now. But, anyway, ,

This event clearly shows that the ECUs can not be reprogramed.

There is a company called Techtom. They are in the business to "modify" Toyota and other Japanese ECUs so that they can be "reprogramed". You may know of one company in the US that does this, E L Prototypes.

The way this is done is that the main chip is removed from the ECU and replaced with a ROM board that along with other things holds a socket for a replacable EPROM. This new chip can be reprogrammed and replaced as needed. I have pictures of this on my fuel delivery page. It however can not be done on any ECUs newer then 1998.

So, to accomplish this the chip has to be removed and replaced. So the ECU is physically modified. JET does not do any such thing. They simply put stickers on it and claim you got reprogrammed.

There have been several people in the truck community that have not listened to me and my mistake dealing with JET and have sent there ECUs off to them for "sticker tuning" and every single one has started that there was no difference in MPG, acceleration, drivabiltiy, power, NOTHING. One guy even did before and after dyno test and there was NO DIFFERENCE.

So, based on my own experiences, what I have learned, what I have been told by other ECU tuners like Techtom, I feel that JET is full of crap and are ripping us Toyota folks off.

Of course this is just my opinion...

Gadget

by **onefiend** » Sat Apr 10, 2004 3:34 pm

^ You did some great research, I learned something new today.

by **esculatus** » Sat Apr 10, 2004 4:32 pm

wow! thanks for the info Gadget!

by **Astro** » Sun Apr 11, 2004 11:02 am

Now I know, NEVER to get a JET chip.
Thanks Gadget!

Larry

by **Gadget** » Sun Apr 11, 2004 2:05 pm

Well, I could be wrong.

I would like to see someone do some before and after dyno testing to see what is what.

Gadget

by **SolaraT** » Sun Apr 11, 2004 3:24 pm

That is great info Gadget! Your a good asset to solaraguy.com.
I'm still waiting on Greg to see this post and give us his input as he said it worked out good for his S/C Solara.

by **MaxBoostSolara** » Tue Apr 13, 2004 8:24 pm

hmm... very interesting... i also wonder what greg has 2 say about this... could it b that the 4Runner is too underpowered 2 where u dont feel the difference? or is JET really a rip? laters

by **SolaraT** » Wed Apr 14, 2004 1:43 pm

Hey it's a case by case basis. Lets see what Greg says. GREG!! were you at?

I forgot his screen name to PM him anyone know?

by **Paladin06Greg** » Fri Apr 16, 2004 1:14 pm

Gentlmen and Gentler Women,

I'll keep this short and you can quote me, JetChip is no doubt "the best damn performance enhancement money I've spent on my Solara" since my TRD Supercharger. I have spent a lot.

As far as down time, Once I mailed off my ECU, I got it back within 48 hours as promised.

Action and experience outweights opinion.

No Guts, No Glory!

Almost forgot, someone said Dyno testing, well my test is those black rubber streaks I leave in the road from a 0 to 20 mph roll and that bewilder look I see on GM, Ford, MitsuBshi (LOL) and others face after the roll off.

WWWWWWWWWOOOOOOOOOOODDDDDDDDDDDDYYYYYYYYYY!! LOL

by **SolaraT** » Fri Apr 16, 2004 1:44 pm

Thanks for posting Greg!

Great feedback. This is obviously a great product and it WORKS for the Solara. It's all upto each person to Whether or not they will opt-in or out of the JET chip.

by **Paladin06Greg** » Fri Apr 16, 2004 3:04 pm

JetChip ECU upgrade?

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