Hey all, this is ment for those running the Greddy Ultimate.

Ive been running the greddy ultimate for awhile now. Its the Ultimate with a map sensor. An aem wideband, boost gauge, and oil pressure gauge( just so you know what im running) I was alright on boost for about a year and a half, till i started burning oil. Long story short, i blew 3 out of 4 piston ring landings. I have a few questions. Im pretty sure the rings went because of pre-ignition. Now, the car was running great for over a year, till this happened.

Is it possible that the stock pcm adapted to the tune, and started changing the tune? (dont remember what the afrs were looking like towards the end)

If so, would the only way to avoid this be to go stand alone? Ive been looking for an aem ems, but theyre so damn expensive. And from what ive been reading, the universal units cannot control dbw. So i would have to run it with the stock ecu.

If its possible to keep a reliable tune with the ultimate, what would you guys suggest i do/add to it if im missing something. The tune I had was pretty good when i got it.

Any suggestions? serious advice please... thanks in advance

 

maybe try resetting your stock ecu by either disconnecting the battery or the fuse for a few minutes, that should "erase'' the memory from the ecu allwoingyou to run your EMU tune from scratch atleast until the ecu relerans everything then do it again...

 

No tune will adapt adversely if tuned perfectly from the get go. Good enough is NOT good enough for our cars. Even if God himself tuned my car, I would still watch AFR's at all times when under load. If you were leaning out, then you have the chance of breaking many things. Our cars' ECU is amazingly adaptive but if you tell it what it wants to hear, it'll play ball no problem. If you give it any wiggle room, it will take advantage of that and correct it back to N/A settings. My advice, avoid the hassle and expense of an EMS and find a better tuner.

 

thanks for the input guys... im still keeping my eye out for a stand alone, but if funds fail, ill keep the ultimate in mind rangerryda. Aside from the gauges and sensor i mentioned, any other you might suggest? All ive got is the map sensor for the ultimate, and the oil pressure, wideband, and boost gauge.

 

That's all you need for gauges as long as they are functioning properly. Other than that, it's all in the tune. You can also do a compression test whenever you want and check the plugs at the same time to re-assure your confidence or hopefully spot a problem before it becomes really bad.

 

The Ultimate, like any other piggyback can learn against your tune if your trims where not paid attention to when tuning. This is very common for a lot of tuners to neglect the trims and have this happen a few days after a tune.

With respect to your standalone comments, you are paying for adjustability and control. Simple as that. You want it to idle at 10:1 AFR and 30 degrees of timing, you can do with AEM, but not with the Ultimate. This control is second to none and you get what you pay for.

 

Hey paul... with all the versions of the aem ems, which one should i use for the tc? I guess ive been searching, but here are some many different model codes, dont know which one is right.

and compaired to the Aem ems, hows does the Allen Phillips unit compare? Id imagine finding a tuner for the Phillips unit would be dificult, how hard would it be for a novice tuner to work with?

 

The APR is an excellent unit and when tuned right, is just as drive-able as a full standalone that's well tuned. As far as tuning, the tuner must understand what they are modifying and how it effects the larger inter-workings of the stock ecu's strategy. Because you are still using it at all in comparison to the AEM EMS, where you virtually eliminate the stock ECU, you must consider it and it's agenda for knock control and such.....

In all, I am in love with the APR unit for all of the engine management needs of the 2AZ. I have tuned a few now, even by email with great success. The data-logging allows me unreal amounts of data and gets me a full spectrum of info to get the next run perfect.

The AEM EMS, if you can find a 30-1050 box, that is what we used before AEM switched to the 60 series V2 boxes, that is proven technology to us. Send it here, we can modify it, give you a cal and build a harness for it.

Alternatively, the new 6050 box is out with the new Tuner software, and we have a formula we believe works, but we have not tested it 100%. The box and software are very different and we have piloted some initial testing with success, but have not done a full on tune. So, I can't really offer that to you as a result.

 

by the sound of it, the APR unit sounds really good. do you guys provide a basemap for it? how about the tunes?

 

You tell us what injector size and such and we make a base cal.

 

i was just curious... would you happen to take a fic w/05 tc harness, an emanage ultimate w/05 and standard harness, map sensor but minus the software for it? and cash? just tryin to see if i can work something out to try and get the price down

 

Try to sell it on here or ebay and see what you can get for it. I have no use for used parts and we do not deal like that. We sell new parts ONLY unless it's something off of our shop car or something, which is then specified used.

I can't rework the pricing on this unit, so any $$ you can get for those items would be toward the unit.

 

gotcha... was just checking =o) im in the process of trying to get them both sold

 

https://www.scionlife.com/forums/sho...d.php?t=188378

 

Try Mtuned. Mike.
See what he can do for you.

I've been watching the Haltech
and tryn to decide on the greddy u. Or the haltech.

 

http://www.ptuningscion.com/subdir/i...E&ModelDesc=tC


Give them a call.
Get all the pro's and con's of ALL the systems.

 

thanks for the info man... im gonna look over it... from the discription on the haltech website, looks pretty nice

 

Yeah. I was very confused and didn't know what to get when I build my motor.
Toan talked to me for a good half hour explaining what unit offers what, good, bad etc.
If and when I descide to go for 500+ whp. I'll go with the haltech.
My next step is the 400 whp mark and I'm thinking I'll go w/ the greddy.

So yeah. Check it out. Give em a shout.

 

im also going for the 400+whp goal.. lol Is the Haltech a standalone?... not sure, but it almost sounds like a piggyback

 

No this is not a piggy back.
The Ptuning haltech is a full standalone.