Ya but isnt that a gsr so that means you have +400lbs of driver and gear? If they do it just to make more realistic ET like they said thats fine, I just thought the weight was a little high. I didn't think it would give you "generous numbers" or anything like that.

 

I'm kinda confused. The Z-chip can manipulate the Rev limit also?
Because in this drag video prep you put it out you say, you run
11.83 sec @ 116.3 on drag dyno. As a prearation for a drag strip.

But clearly you never shifted the 5th gear. So how that is possible with the factory rev limit?
Can you comment on that?
Thanks Rob

http://www.youtube.com/watch?v=37qNQcwSmI4

 

The information has already been provided. Read the thread.

 

The X weighs around 35XX and the 8/9 weigh around 33XX

Add approx 170-200 for driver (tuner) on the dyno and that is the weight you get.

Obviously nobody really weighs every single evo before it gets on the dyno so approx weights are used for every evo unless it is a significantly lightened Evo. At least this is what I do on our dyno.

 

thanks for the clarification

 

Good question.

 

Go with the COBB AccessPort.

No splicing, no signs of ever being modified if you should ever choose to revert back to your stock configuration. It has the best functionality of anything else I have seen, including recovery tools should anything wacky happen during the install that is over in about 5 minutes

You can store up to 20 different maps! Including these that are pre-installed with the unit: economy mode for better gas mileage, valet mode to protect your car from being abused by someone other than you , anti-theft mode which won't let your car be started until you unlock it again using the AP, performance minded pre-programmed maps for 91 & 93 octane. New maps will be released by no only COBB but also other tuners and end user in the coming months. There is also the best part of all, the ability to go to tons of custom tuners around the country and get customized maps for your specific mods. You can flash all these maps yourself once stored on the AP at your convenience in under 30 seconds. The possibilities are endless

COBB has also released Access Tuner where you can create your own maps if you are savvy with tuning (even connect your laptop to your OBD2 port and do live tuning!).

Plus flashing the ECU is the only way to alter parameters such as the rev limit.

You also get live data from your car including voltage, MAF, TPS, RPM and many many more.

Also live data logging built in!

It also has a performance meter that will spit out 1/4 mile times and MPH if you are into that sort of thing

Another great thing is that down the line if you should choose to part with it you can sell the unit and recoup some of your cash to not only other Evo X owners but any other car that is compatible with the AP, including the STi, GTR, Mazda 3s, WRX and lots more that can be seen on their website.

It is really a great, easy to use and full featured unit. I just installed mine tonight and could not be happier. I'm not telling you to get one just because I got one. I think I would have gone with ECUtek had the AP not been around, but this gives you everything the ECUtek does plus so much more.

It is a bit pricier but very much worth it in my eyes.

Good luck with your decision and do lots of research before purchasing, that is what I did

 

Cobb AP is a little more proven, but the z-chip has made power for other people.

 

Keep in mind it's all about the tuning. The motor is only able to produce XXX power in a particular state. It does not matter what tuning solution puts it to those peak power levels as long as it's a capable solution. From there it's about flexibility and how smooth you can get the part/full throttle transitions between open and closed loop. Being able to modify any of the ECU's internal parameters to achieve a more rounded tune is a huge benefit. Anyone can make WOT power. Where the expertise comes in is the part throttle tuning.

Using a device to manipulate an already rough tune to do it's bidding is not the best idea for smooth daily operation. Or trying to dance around the max airflow or torque limits when you could simply modify them in the ECU to add power instead of limit in those areas.

A piggie back is simply a no where near as comprehensive and extensible of a solution as a well setup ECU flashing solution. The ECU flashing solution will be able to make the most of the power the engine has to offer everywhere on the curve.

Thanks,

 

The ZChip is an excellent choice for many reasons not limited to its pricing point at $399.

Its ability to meet and exceed the power output of any other tuning method.

The part throttle response in our opinion is much better with the ZChip in our experience thus far

The ZChip has no need to "dance around" any limits in the ECU. It merely optimizes the state of tune, improves the efficiency of the engine while creating power and torque with no side affects and no WRITING over the FACTORY ECU mapping.

 

Cross posting is not allowed. Any future attempts will lead to points and/or a ban.

Thread cleaned.

 

A piggie back is tricking the ECU into using it's stock (rough) tune how the piggie back wants. It's still subject to the limits and stock values of the ECU and there for must <insert your favorite verb here> around those limits and stock values.

"WRITING over the FACTORY ECU mapping" would be an incorrect use of terminology. The AP users stock tune is safely kept until the user would like to uninstall at which time the 100% original map is flashed back into the ECU with no ill effect or permanent installation damage.

Thanks,

 

What side effects does flashing ECU have? Please explain.

You are making is sound as if flashing the ECU is a bad thing.

 

I love my cobb ap.

 

If you're limiting yourself to either the Z-chip or the AccessPort, hands down the AP the better choice. Zeitronix is a great company, and the Z-chip is a very nifty "first to market" solution to tune the Evo 10, but it provides only indirect means to tune the car. The Z-chip alters the MAP signal to make the ECU think the load is higher or lower than what it really is. (BTW, the use of the MAP sensor to alter load is fascinating because it suggests that the Evo 10 is speed-density based for open loop driving.) By remapping the load response, the car is essentially tricked into running different timing, AFR, MIVEC, etc. Careful manipulation of the remapped load leads to improved performance by running more timing, running a leaner AFR, etc. It apparently works quite well in the correct hands, but its still an indirect tuning tool, and a direct tuning tool like the AP can always do better (again, if in the correct hands).