Celica Forums General Discussion Exterior JET Chip

i know people talk sh*t about the jet ecu upgrade but has anyone tried it out on their new gen celica yet? do they even make one for it because i was looking at their site and it says they can upgrade my celica ecu. but i'm not sure if it's for the new celica or the old ones because they don't state the years for the ecu. i was under the impression that our ecu is hard or even impossible to remap everything. but it would be great if they did and lowered our vvtl-i down to the 5000 rmp range =D that would kick ass!

I have not met a person that has done it. Most of the talk about it being bad is just talk. Possibly rumors. Maybe you could try it out, and dyno before and after.

I contacted Jet about this and they said that they could reprogram the ECU for the 7th Gen Celica. And just for general info this is what they say about the difference between the ECU upgrade and the V-Force.

"The difference between the ECU upgrade and the V-Force is, the upgrade can be tuned for specific modifications that have been done to the vehicle. While the V-Force will change the timing and fuel curves, but is not designed for specific modifications that may be on the vehicle. The horsepower gains are slightly more on the upgrade than the V-Force. The computer upgrade has a 1 year warranty on programming. The V-Force has comes with a limited lifetime warranty."

Just in case you are curious. I have not done this but was inquiring.

I don't get why everyone wants a stupid little chip and think that it'll do wonders on our n/a 1.8L motor. Everyone wants a quick cheap fix. If you want true performance, get ready to shell out some bills

yep

I agree but maybe people just want some advice before they make a $400.00 mistake.

but...but...

a guy at pep boys told me if I solder a resistor to my MAF sensor, I'd gain over 60WHP.

lol, that pep boy thing was funny.

any how, i know you have to shell out money and i have =) i'm just asking because it's on my to do list. also, i'm just curious that they are able to do it because not many company has. you know, just need feedback. thanks

I dont remember who posted it but i remember reading that the codes that activate "lift" on the gts have not yet been cracked like they have for the vtech on hondas. There for an upgraded ecu would not bring the "lift" to lower rpms.

I dont know how many times I have to tell everyone.

jet chip, venom, all the other compies out there that claim they have one for our car are lieing. Plain and simple

To this date there have been NO aftermarket piggy back air/fuel/timing/flux capacitors

have worked on the 00-03 celicas. WHY? ecu is not programable.

It will detect the discrepancies between the MAF and the o2 sensor and reset back to stock. Sure it may work for 1-2 dyno pulls but after that it goes back to stock, there is no WOT difference.

Only current and tested way to make power is the Apexi Power FC stand alone ecu for the celica. Origionally developed for the GT celica in japan.

Monkeywrench racing has just finished its tuning with the Injen cold air intake and the Power FC and got 175-178 whp with 122-125 wtq.

The power FC is capable of moving around the lift engagement point but the tuners who have touched it so far seem to move it higher than 6K to make more power, not lower.

I sent them my trial headder to use for their second part of tuning which will involve the injen cai, trial headder, and a common exhaust.

If you really want solid gains and some thing that WILL work go with the Power FC, it plugs right in, any warranty work you can pull it out and put the stock ecu in less than 5 min.

-J

so are you talking about the GTS puting out 170-175whp or the GT. if you were talking about the GTS what kind of gains does the GT get? and where can i get this data at. thanx in adv.

yes, i've read this all too. i know there is NO company that has created a chip for it that's y i'm making sure with you guys becuase i've been out of the game for a lil while. also, the reason why we can't change our lift like the vtec is because vtech is determined by the rpm speed, however ours is determined by rpm and engine temperture and one other thing i can't remeber rite now. that's the reason why no company has made the chip yet. but when i saw that jet had it i thought to myself, wow someone made it finally. but i was wrong. in addition, i know that our stock ecu can't be reprogram that's y i didn't ask about the apexi afc. i know it works for like a couple of runs and the ecu bring it back to stock. That's y i wanted to replace the whole chip if possible. Which leads to the FC. but that thing is really expensive and you have to know wat you are doing. but all in all, i guess NO company can mod the ecu still. THE ONLY ONE that is capable of doing so is TRD. they say they can do it but it's not for sell to the public. =(

how much is the power fc, is it for the gt or gts and what kinds of gains

I dont think they have done any tuning on the GT celica (monkey wrench racing)

the origional program that comes with the power FC was designed for the GT celica in japan.

monkey wrench racing loads on new base maps for the GTS celica.

Their info is on here I posted it in the perfomance mods section and on NCorg its like 4 pages long.

the 175-178 is on 92 octaine they got 183 whp with 96 octaine (less aggressive tune)

they are going to be selling the power FC's with the tuning already done for the gts.

-J

i hope they do the same for a gt also that would be good

so the gt is s.o.l. as of now.




this sucks

The third factor you're forgetting is oil pressure.

VTEC works of an electronic solenoid, our system works off of oil pressure in a hydraulic mechanism on the intake camshaft sprocket (all Variable valve timing engines made by toyota work on a similar system. An electronic oil control valve flows oil to the hydraulic cylinder, and switches the camshaft over to the hot side. Lift uses a seperate mechanism, also on oil pressure, that forces four small pins under the rocker arms so the followers can reach the lift points on the hot cam, thus allowing the valves to be pushed out more, this is how lift works.

I've been trying to create a stand alone lift controller, but it's proving to be trickier than I thought. Theoretically, an independant controller for the oil control valve would do it, but the actual operation on cue is trickier in practice than in theory. I'm still working on this.

The ECU can be reprogrammed, but only by toyota, since the ECU's ROM is encrypted. that's why, for now, the only solution is a stand-alone replacement, like the brash boy ECU or the Power FC.

Piggyback systems may work for some applications, but the solution is only short term, and the factory ECU will dial it out after a minute or so. Not a problem if you are using it for drag racing, where you run the car for less than a minute at a time, but in endurance races or events longer than a minute, it's no help at all. Perhaps ther's a solution to the whole "Recalibration" issue, but I haven't found it yet. Piggyback units alter the sensor signal maps, not the ECU's hard-coded flashrom programming, the issue relates to the factory ECU tuning out the altered signal maps and compensating for the changes in voltage; it looks at the IAT/ECT/Knock and other sensor signals, notices the voltage has changed slightly, and says to itself, "Oh, the voltage is a bit off, The sensor must be failing" it then compensates for the change, best case scenario, the car runs like stock, worst case scenario, you get a check engine light and your car runs like crap. this is also why the resistor trick won't work on our cars.

Brash boy makes performance ECU's for both the GT and GTS btw. They aren't cheap though.

oh yeah. that was it. =) but yeah, keep up the good work and when you do make it, i'll buy ONE off you =P

same here