Hello, somewhat of a newb here. i was just wondering if the piggy back ECU's adjusted according to the conditions (temp, altitude, etc)? so if I get a tune done to my car with my mods be it FI, or NA, is the piggy back going to adjust to the conditions?

thanks

 

like when your car is warming up your computer changes things etc, etc...

 

Most do... Some do it better than others...

 

any links? I was lookin at the turbo xs

 

JB, good answer.

04silvrz, what is your setup? In my opinion, UTECs place in this world is gone. There are better options for milder setups such as a dyno-tuned flash, or a standalone such as the Haltech Platinum for more powerful setups. Both of those can be calibrated to perform like stock.

 

+1

Utec those have a temp compensation table, it may not be the best but it does the job... It really depend if you are FI'd or NA, if you are FI'd then you will be using speed density and a map sensor so you will rely on the temp compensation table in utec when temp changes, if you are NA then you are using MAF sensor but you can also use speed density but MAF pull up/down is easier. MAF mode is basically just scaling the ECU value so temp changes is already added in...

 

I beg to differ... Haltech is a standalone and more than twice the price.. For sub $1000 then Utec still has a place. I have debated this and Utec still offer some nice feature like Overboost fuel cutoff, Active Knock control on all RPM and you have an option to adjust sensitivity and more control on the timing being pulled, boost control, Nitrous control...etc. Reflash is another strong candidate but for self tuner it is not the easiest to tune because of the lack of base map. The ECU dont monitor knock above 5000rpm so at WOT run you just hope that nothing goes wrong, you also hope that you have a sick EBC coz nothing will save your motor on a big boost spike or boost creep. If you do knock below 5000rpm then a reflash basically just switch to the high_det map so perfomance will generally suffer over all, not that there is anything wrong with that.


A perfect tune will not protect you on failing parts like injector, wastegate, bad tank of gas (I had this twice and thank God utec pulled some timing while I was WOT/Racing). I rather have the extra protection over perfect drivability.. just my .02

If drivability is your # one concern then a reflash maybe better but if you want the extra protection for boosted car then Utec offer more.

 

+ 1000 exactly, athenG is right.

The only way I would go with a reflash or osirs tuner is if I was NA. The Utec saved my motor quite a few times.

 

Yes, which is why I inquired about his setup and recommended the flash for a milder setup. For more serious setups I would use Haltech, which would allow for a proper tune that is safe and drives nice. I am guessing by the recent switch you agree... ?

 

i am running a mild setup right now(CAI,E,Plenum), but would like to do some sort of FI down the road.

do you think the orisis would provide the real world stabilty? peform like the stock ECU to weather conditions. the weather is just crazy where I am so, i just need to make sure. thanks for all the responses.

 

For NA then reflash is more than enough or probably better but for boosted car and self tuner then Utec is still my # 1 choice for piggybacks.... One other problem w/ Osiris is the lack of 3rd party WB support, I'm just not comfortable tuning using the stock 02 sensor.

 

yeah, it sounds like the utec has worked well for you. i might just stick to getting that one. i just have been reading all these threads about orisis and how great it is. if i were to do FI it would be n20, and everything i read the utec does a real good job with that too. but after seeing your story about it correcting for your bad gas, i am sure it would correct for conditions.

 

I stand corrected Hal. Your right I did ditch the Utec but mainly cause I plan to build the bottom end and go for the mid 500 range this fall. I do have to say the haltech blows all the EMS's away in my book can't wait to get a tune.