I sent them a email, but they never got back to me. I guess i could send another

Later
Aceman

 

aceman,

so you gained approx 4-5 hp and some torque correct?

i am sure your tune is much better resulting in a more efficient running engine but i am wondering if the price of the utec is worth only 4-5 hp?

 

^^He gained 5whp OVER the reflash tune man. And no put down to Aceman hes done a great job self tuning but Im sure others could squeeze even more out of it. In extreme NA applications going from bolt-ons with no tune to a tuned UTEC the power would be 15+whp easy even more for some FI apps...

 

not trying to be negative here at all...i forgot that he had the reflash so good point ablerto.

so there is potential for at least 15 + hp with the utec...with similar mods

 

The worse the tune is off with the mods the car has, the better results you'll see when you tune. This will vary from car to car. I ran WAY lean with bolt-ons, did a mail in Techno flash and gained 9whp and 12ft/lbs, if I had tuned with a UTEC I would have gained even more....

 

i am thinking this is the way to go....you can custom tune to your application resulting in better performance vs a generic reflash.

every car is going to be different...thats what makes this a better option because of the tuning capabilities

on a scale of 1-10, ten being the hardest...how hard is this install for DIY?

 

Installing the UTEC is pretty simple, maybe a 1 or 2. The part where it get's hard is doing the maps or installing a Fuel Return system and stuff

Danny

 

WIth no MAP sensor (NA use) its a 3....

 

so getting the map sensor makes it easier for tuning?

so far, i have gathered that the utec, tuner reg, and map sensor are needed for tuning...correct?

i want to have my car dyno tuned but my local tuner told me that they have not done a 350z yet with the utec

i need to find a shop that can tune with this before i buy it

 

MAP=Manifold Aboslute Pressure. This is what myself and other FI Z's run because its reading boost. IMO, no need for a MAP sensor NA....

 

appreciate the info

i'm getting itchy

 

Oh, im sure someone that knows more about the Utec could get more out of the car.I asked AAM what it would cost to tune the UTEC and the price was over $400. To me that was too much to shell out after the Reflash. So i went ahead and tried to tune it myself and still made some gains over the reflash. I am happy with it.


Going to mess around with 2 other maps i have and head back to the dyno in 2 weeks or so to see if i can gain any more. Then its off to Port and Polish heads with a nice set of cams


Forgot to add, All pulls were done in 4th gear. SO im not sure how much power it would show with a 5th gear pull.


Later
Aceman

 

Find a shop that does Subarus WRX/STI's they have been tunning UTECs for years, its the same platform.

 

have them checking on it now...they stated that they had problems with the earlier versions for the z

 

There were no problems with the units, people just didnt read the manual..Here try this http://www.turboxs.com/dealers.htm#-%20C%20-

 

said something about the fuel maps and how the ecu would change maps randomly, so after each tune the ecu would take over and remap...thus making tuning impossible

i believe these units, if not utec, were the earlier versions that would piggy back of the ecu and "trick" the computer

maybe the newer units are better equipped to handle the difficulties of the 350z ecu

 

it still piggybacks off the computer and tricks it in maf pulldown mode.


if you dont believe me, do a cold start and go try to haul ***. it wont work. which means the engine is either retarding the timing or limiting the fuel in which a standalone computer wouldnt do that.

 

Only on NA cars. With Forced Induction cars, with the UTEC setup with its MAP sensor, the tuner has full control over fuel and timing, without interference from the stock ECU.

I just dont see people spending $3000 for an EMS to tune an NA car, for maybe 10-25whp at most. UTEC or EU is the way to go, in this instance.

 

can somebody give me a quick break down of what this means? sorry

Knock Control- This feature allows you to help keep your motor in one piece. The UTEC contains default knock thresholds but can be adjusted at 1000 rpm increments up to 9000 rpm. It also contains a Knock Count threshold that allows you to define how many counts of knock before the UTEC will respond with a Knock Retard Step. The Knock Retard Step is the amount of ignition timing that will be pulled per knock count to a defined Knock Maximum Retard. Knock Maximum Retard relates to the maximum degrees of timing the UTEC will retard per knock event. When a knock count is registered the UTEC will hold the retard for a set number of crank cycles this is called Knock Retard Duration. The UTEC also has the ability to apply a global Knock Correction to the entire map once a knock event is evident. This will help ensure that you keep your high compression monster together. All of these features are the UTEC’s safety net. They should be used pro-active not as a reactive measure.

 

^^^^^^^
Basically, it means that the UTEC reads knock sensor input, and will retard timing when knock is present. The level at which this occurs is user adjustable, and the action that the UTEC takes is also adjustable. It can/will retard for specific knock events, and can/will also do a global correction of the timing map...depending on how the tuner sets it up.