Celica Forums General Discussion Exterior Super chips?

does anyone have any idea where i can get a super chip for my car anything else then my stock ecu ...ive looked everywhere and have had no luck...please help im trying to make my car quicker and i really want a chip

someone correct me if im wrong but

the ecu's on the celica sucks, when its messed with/tuned it resets itself in bit

every1 says it doesnt work, and it auto-correct its self.. . im sure if you were to search for "ECU Piggyback" there are tons of ppl saying it doesnt work..

i heard the same...our ecu's are not tuner freindly...they're TOO smart.

How about the Apex I' Super AFC2, it's a piggyback that lets you change the air/fuel ratio. I'm not telling you from experience, but there is a setup code in the products manual for our Celica engines. Just a thought .Or maybe get a Mafterburner, it's a system for cars with MAF(mass air flow)sensors. A lot of todays imports use Fuel maps, and thus can benefit from a system like the electromotive distributorless ignition system and similar stuff, but our cars cannot use these because of the sophistication and complexity of the VVTL-I system. I'm not sure about either of these piggybacks, but I've been told they'll work

Unfortunately, the Apexi S-AFC DOES NOT WORK in a 7th gen Celica. So anyone who is reading this and has not purchased this product yet, take your money and get some thing else instead. It's too late for me, not only did I pay $300 for a S-AFC, I custom molded it into my center console! Oh well, at least it's a cool looking light show.

Many piggy back units do not work for our car. The reason is because the mass air flow and OBDII sensors BOTH send a voltage signal to the ECU. Making fuel adjustments based on readings from both, the MAF and OBDII is a new way of managing fuel enrichment.

When you try to make a fuel adjustment with a piggy back unit like the S-AFC, you are accomplishing this adjustment by sending a false voltage signal to the MAF. The MAF is supposed to read this false signal and relay it to the ECU. This would work perfectly fine with any other car, but not with the new Toyota's. This is because when the OBDII takes its reading and sends it's voltage signal to the ECU, the ECU will realize that the resulting fuel adjustment that it just supplied was not within stock parameters. When the ECU realizes this, it will over ride the S-AFC and return the fuel enrichment back to stock parameters.

Most people think that the S-AFC will still work when the car is at wide open throttle because the ECU goes into open loop circuit. Unfortunately, this is also not true.

On most car's, when the driver goes wide open throttle, the ECU makes no adjustments. Instead, the ECU defaults to a pre-set fuel map. However, because of OBDII, all new Toyota ECU's take closed loop fuel trim settings and applies them to open loop fuel maps. The ECU does this because it assumes that if it needed to lean out the fuel mixture when in closed loop, then the car must need to run more lean in open loop as well. This is actually a great design because the ECU can do a better job at correcting problems that cause bad fuel mixtures. For example, if you develop a vacuum leak the ECU is able to take the needed adjustments and apply them to wide open throttle fuel maps, which other cars are unable to do. It sure does suck for people who want to modify their engine though.

The Celica can only use a piggy back unit that will send a constant stock voltage signal to both, the MAF and OBDII. The FTC-1ESC accomplishes this and is available from http://www.splitsec.com/. The Greddy E-Manage will also work, and is a great unit. With the Greddy E-Manage, you have the option of splicing into the fuel injector harness and adding pulsewidth to them, or even adding up to two additional injectors.

http://www.greddy.com [greddy.com]

Check out Jetchip.com They say that there chip will give you 12 @ the wheel, but you have to mail out your ecu to them and then wait untill it comes back.

good info, Chameleon. E-manage seems to be the way to go.

I've heard mixed reviews about Jet chips...when you send them an ecu, do you tell them specifically what mods you have? Or do they just give you a generic flash?

How about this??? LINK [monkeywrenchracing.com]

Thats the Power FC, which isn't a piggyback for the ECU, but a complete replacment. Most people use it for turbo applications

When you send them your ecu all they're going to do is slap a sticker on it and send it back to you

I have a jet chip in my car and I did definetly feel a difference at lower rpms. However I don't think it is near what jet chips claim to give you and I hadn't gotten my car dyno'd before this, only after. If anyone knows where I can get a cheap celica ecu I will slap it in and then go dyno my car again.

Do you have a GT or a GTS?

I would suggest looking online for a used ECU from a salvage yard. www.car-part.com [car-part.com]is a good place to start. They have them for a cheap as $40 for the GT [car-part.com].

I have a gt. I do want to get another ecu because that would answer a lot of questions that people have about this chip. I will check out that address today.

I just called them and talked to a guy named B.J. I almost laughed cause I like the B.J. anyway It is 50 bucks and I just have to go out and match the number he gave me to mine on my car.

>snip<

Hey Chameleon,

Very infomative post. I've been busy trying to design a OCV controller, and I actually found your post extremely helpful. I didn't know our ODB-II system had redundant checks on the sensor voltage, now I do. This will help me design a workaround. a constant signal to the MAF at the correct voltage with altered signals going to the ecu should fix this (but it would require more work from the piggyback, to make sure the remapped signals are "in sync" with the corresponding "stock" voltage, one mismatched signal to either the ECU or sensor at the wrong time would tell the ECU to override with preset maps. Interesting...

Do you get any check engine light with the AFC? how about Error codes? could you supply them? any little bit would help me out.

I have never personally received a CEL from my SAFC because when I learned that the ECU was over riding the unit, I simply turned all the settings off.

I do know that on occasion the SAFC has been known to trigger a CEL in people's cars. The computer see's a deviation from the expected correlation between MAF and O2 voltages, and as such interpret's this as a malfunction in one of the two sensors. The ECU's false interpretation of it's readings results in the trigger of a P0172 code.

I'm glad that you found my post helpful. Good luck with your OCV controller, I hope your project goes well.