hey anybody using vista with hydra 2.5? i heard that some where having issues.. I just need a new laptop to tune this right

 

Dan Gardner has clocked over 140mph reving out to over 7K in revs with our AEM EMS

 

Bump....


With some more cars on the road running the Hydra, some don't have the sensors unplugged. Also with the description on Hydra's website....


I don't think we have to worry about loosing any OBD II functionality, or throwing CEL's that would cause you to fail emissions. I can't WAIT to get a Hydra. I want that 2 Step!!!!

 

I think you need to call the Hydra Customer service people so you get the answers you need since the people that have tuned it have not helped much in here. Obviously Hydra is missing information pertaining their unit on the website since even after downloading the 2.6 Manual one doesn't even know if the v2.6 Scion tC EMS will be connected in parallel to the stock ECU or if it will finally be connected alone!

I have never worked with the Hydra and can make an educated guess that it will not pass OBDII test. For instance: the ignition coils on the tC are fired from the Hydra because it needs to have full control of them for delivering the timing set on the Nemesis software, so, the stock ecu will not receive the signal that it receives to prevent throwing out a "Cylinder #1 missfire" (or something like that) and you get the idea from other sensors.

When they state Check Engine Light Control they probably refer to the Nemesis being able to use the CEL light for whatever purpose you want it to (example:shift light, warning light, etc...)
It is not even clear if the Nemesis will overide the vehicle speed cut.

For those saving for the Hydra you need to take into account that it is $1700 for the unit + 395 for the autotune option with sensor and + $185 if you want it with version 2.6 = $2280.

Please read that I am not bashing on the Nemesis. I do prefer the AEM unit over it but so far it is only available from Dezod and it is missing a simple and freaking wiring diagram and so far has proven out of the box to not control A/C on 2005-06 models and neither for 2007....

Get all the answers you want before spending money on whatever unit you choose!

Pito

 

I have spoken with Kenny while he has been tunning Brian's car. He informed that the OBD II continues to work. On a side note, Brian has scan tool, and I am having him scan the car to check for any "hidden" codes. He mentioned that all of his sensors were still plugged in. So...we will have data to help us further understand the Hydra's capabilities soon. So, lets hold the theories off and go with more solid data.

It's a difficult to accept your criticism of the Hydra over the AEM when you just stated yourself that you have never worked with the Hydra. So, how can you honestly say you prefer the AEM over the Hydra. The auto tune is an option, not a necessity to my understanding, you can correct me if I'm wrong. I think so far that the Hydra has the Leading edge over the AEM unit. My boy Nick has the AEM standalone, and yes he can not control the A/C with his. No A/C has kinda put a sour taste in his mouth, so he for the most part left it disconnected (N/A'ed, car not boosted yet, still waiting on his TT kit). Brian on the other hand, has A/C all day with his Hydra. Something about AEM not supporting their Standalone on a tC does not sit well with me. Having a unit not made for my car, but modded from another car to fit mine...is a negative for me. That is my opinion.

Hydra = made for the tC

AEM = made for a Honda, and tweaked (in ways we are not aware of), by Dezod to function on a tC, and it still is not 100%.

 

i am going to share with you since i've also been messin with my hydra for a month or so... OBD does work it should come up when pluged in that the front o2 isn't hooked up. Which hydra does inform you b4 and when you purchace it that the o2 is not needed. and from the looks of brians kit i don't think he has the stock o2 in either. but you won't see any other codes because the hydra takes care of what ever is wrong. the hydra uses the CEL as a code for your self being. i think 2 blinks means knock 3blinks is something else and 4blinks shut thisMOFO down the floor panel is falling off. LOL but for real its really nice not have the CEL ever on. and if it is theres something wrong.

 

Brian scanned his car. He picked up more than just the 02 sensor code. He picked up every "hidden" code the car was throwing. All through the OBD II port.

 

yea well i haven't done that but my whole speech was to say OBD I I does work LOL

 

 

^^ lol, OBD does work, i've had like 6 different codes repeating.. but using a obd for diagnostics will not completely functional and reliable as stock

 

That is what I am trying to explain. The OBDII port will "work" with the AEM and with the Hydra too to the point of it communicating with the scan tool...... but.....OBDII "working" does not means that it will not put out any codes and that it will let you pass emissions test.
I am not speculating about the Hydra (regarding OBDII) as I am 100% sure it will not pass OBDII test. I am simply trying to expalin why it will not work!
A bunch of people have installed the Hydra with great success on the tune and everything engine related but, that, along with the super Customer Service they provide have still not helped you answer a very simple question: Does Hydra lets you pass emissions????

Don't feel that I want you to try the AEM as I myself am not 100% happy with the Dezod tC unit.

Pito

 

Not to threadjack but it is very simple to make the A/C work on both the 1st and 2nd generation tC's. You or your friend can PM me and I can help with that. I have done it to a 2006 and a 2007 tC.

Pito

 

Gotcha. I think I should have been more clear on what I meant by "does the OBD II work". By that question, I was asking could the Station actually Scan for codes? The answer is yes to that one. But you were thinking I was meaning does it allow you to interact with it....and that answer has not been answered yet. I asked Brian if he could clear his codes and drive around for a while to see what returns. He has not tried to clear them yet cause he has been busy. I will provide feed back when he gets a chance to do something with the car.

 

He is in Iraq right now, he was only here for a short time. He was all set to return and install the TT kit he purchased. But it still has yet to ship. He was told it would be here numerous times, and I want to say he was told it was shipped, but he never got anything. Now he is back over seas without the enjoyment of boost.....and A/C when he plugged in the AEM.

 

I guess the other thing we have to keep in mind as well, is that guys running standalones have switched to a MAP setup. And the car will generate a CEL for no MAF voltage. Slapping that back in there I can forsee being a pain, just to pass emissions, even if it is for just one day a year.

 

I am pretty sure you keep the maf sensor but the hydra only looks at the air temp and ignores the rest ( I could be wrong through )

 

^^The setups where the turbine does not have an intake pipe on it, usually don't have the MAF connected. But it is possible to still use one I guess.

 

Thats right. If you keep the MAF then the EMS (both of them) can use the part of the MAF that reads the Air Temp. It can be used for data log purpose but I don't use it for tuning because if it is installed on the Intake Pipe it will not read the correct temperature of the air entering the engine and the corrections you make will not be correct. If it is installed on the charge pipe to the throttle body then it will be OK to use it for tuning too!

Pito

 

Here I am! The A/c would not work but that wasn't the only issue with the AEM. Once the Idle is adjusted lower than 1,000 RPM's the car dies. During our data logging the voltage to the AEM isn't enough below 900 rpms to keep the AEM running without the correct power to the AEM the car dies. I am not exactly sure what the problem is with this it may be because both the OEM ECU and AEM ECU are running off of the one power source along with two other items (I think the MAP sensor and the IAC but not 100% sure about this). On another note the AFR are perfect the entire time the car is running with a electronic load (lights, stereo, rear defrost). When the idle was below 1,000 rpm running around 900 I could turn the headlights on and the car would die, not every time but if you turn the on and off with minute pauses between the car would die every 3 time, the AFR would be consistant the whole time at idle while doing this and after taking my laptop to the tuner for him to use all the sensors were set to the correct options. For my goals this computer left a sour taste in my mouth. I haven't given up yet but almost. I priced a MoTec setup from Jotech Motorsports and might be doing that even though its rather expensive but its a complete replacement without using the OEM ECU. Definately interested in the A/C fix though please PM. That would make me feel a little better just need to fix the other issue, which I have a plan of action next time I am home.

 

^ i feel the same way about the aem ems. maybe i should of went with the hydra or a different ems.