I had JT tune my car a few weeks ago. There was an issue with the transition point going from the OE computer to the UTEC. I took it back to Jeremy and he tweaked it. I know some people have issues when the transition takes place. It's impossible for me now to tell where the UTEC takes over. It is truly seamless.

With the tune I got from Jeremy the UTEC is killer. For my power level 565whp w/600 injectors I can say the UTEC get's the job done as well as anything else. I would like some of the fetures of the new Haltech, but if your looking for a great tunning soluton at an cheap price the UTEC is still awesome.

JET

 

I am running the UTEC as well that was tuned by Forged Performance. Totally seamless from the ECU to UTEC. A huge differece from the greddy emanage that came with the TT kit. Glad to hear you got yours tweaked to perfection.

 

Nice JET, i'm excited to get my UTEC next week and start playing around with it hooked up to the 9 volt battery (won't be installing it for a month at least).

Do you happen to know what Jeremy tweaked to cause a smother transition? Was it a shift knock issue, or simply just a delay in the transition?

 

probably spent more time tunning it.. the thing about the FCon that everyone raves about is that it has better resolution for fine tuning.. when JT tweaks his UTEC for smooth transition.. he will spend 4 times as much time tuning his UTEC than he does normally.. its like making an omlette by breaking the eggs and adding the ingredients vs whisking the egg for a good 10 mins and adding a little bit of butter milk to make it fully and tastier

 

^^^ lol at the omlette example

 

my Utec has served me fine... But i am looking at making the move here soon to the Fcon or Haltec, possibly a ProEfi..

 

UTEC is a fine tool and a great value. It's the lack of updates that bugged me more than anything, especially after TXS teased everyone by showing off a new GUI at SEMA 2 yrs ago. grrrr.

A few minor tweaks and a new user interface would have made it a really attractive option today despite being many years old now...

 

I am confused, are you talking about partial throttle? I never really had a problem with the transition, if we are talking about full throttle, here.

I like my UTEC, but I don't know how much I am going to like it after the tune is completed on my built engine.

 

usually with the utec.. if you boost to about 2-3 PSI on partial throttle and let off.. the car will lurch forward or feel that way..

sometimes when you are also going full boost on a UTEC it will give a slight delay when it switches over from ECU to UTEC

 

Also, when the temperature is drastically different than when I got my UTEC tuned, I got some stumble/lurching at full boost. Usually this involves at least a 30 degree temp difference. Considering I am in Colorado, that does happen.

Anyways, I switched to a Haltech for a number of reasons, including that, and I am really happy with it.

 

I have never had this problem with my utec. I can't ever tell when the unit takes over. I've been through just about every driving situation possible. I had my Utec tune by Sam at GTM and drove it around in the hot desert out there for awhile and then took it to Colorado and then to North Carolina and then to Illinois. I've driven in 100+ temps and below 0 temps. The Utec is smooth as stock. I truely believe its all in the tune. I love the fact that I can hook up my own laptop and view and change anything also. Not that I'd modify this awesome tune but its nice being aboe to monitor everything.

 

That was a good point to mention - the Colorado folks kept getting CEL codes up at altitude with the UTEC that TXS never got resolved as far as I know.

The Haltech is a great EMS (but you pay more, so you expect more). The real bonus with the Haltech is that the support here in the USA via InjectedPerformance is just superb.

 

The Utec is a nice unit for the money. It is the premier mid level engine management for the 350z. We love em!!

 

Yeah, that too, about the codes. And definitely about the great support from Hl@IP. TXS never even bothers to respond to emails, PM's, and even phone calls. Hal@IP responds right away, and is really great at support.

 

lol
you are comparing a newly released standalone ecu ...to an alreadyproven "piggy back" ecu that did have decent initial support when released...

as a stand alone haltech is great and as a more mid level piggy back the utec still best

 

nice jet...the only reason i didnt get the utec was because i was hoping to get into the HIGH whp numbers...so i went with the fcon, but ill never dog on the utec because its obvious its putting out some killer numbers

 

I have experienced the 2-3 psi partial throttle as you mentioned above, and honestly I had just gotten used to it, lol. I figured it would stay that way until they came up with updates, however, I don't believe that will ever ever happen

In regards to the full boost issue, I have never experienced that, I hope I never have too. Is this more common with cars between 450-600+ whp?

I know that you eventually went to FCON is this one of the reasons, out of curiousity or was it just the next logical step?

Craig

 

Well Jet we can't all live in sunny florida where the UTEC doesn't have to compensate for drastic temp. changes haha. I know, well atleast with my UTEC, it just couldnt keep up with the changing temp. It could be 65 degrees during the day and run PERFECT...when it became 35 degrees at night, lean across the board...I love my Haltech

 

Tuned properly with the proper temp corrections applied to the UTEC, that does not happen..The Haltech as well as the Fcon, both use a teperature correction table, same principle as the UTEC. The problem being is the weather changes while doing the initial tune to get the corrections dialed in right. Its difficult getting 65 degree weather to turn to 35 degree weather when your tuning.
The UTEC does what it does and does it well, for the price. The OP posted this thread cause he wanted to share his happiness for a product he purchased, not to compare his product to one three times the cost. Let the man rejoice!!

 

Nice #s Jet!