just give it some gas while you starting it up.... it start right up.... i know what you mean with the anoying start up... lol

 

A simple re-flash via Osirus to scale the OEM ECU for the bigger inectors should solve all your starup issues. I iditched UTEC years ago for other reason such as it's inablity ot tranasiton between on/off boost maps smootlhy at high RPM.

 

you could do the reflash but might as well just upgrade to haltech. alot more options, two step function, closed and open loop control, upgradeable wideband setup, injector latency etc. haltech is a great upgrade!

 

Osiris is what you need if you don't want the UTEC issues and want more power with less PSI.

 

Reflash ECU will " might " require retune Utec. That will cost another $500+, like jtran said save little and sell that utec, upgrade to haltech. Or Solo-350z said, you can switch to osiris, but that will cost you another 1k, but i think jtran doesn't do osiris.

 

scheduling right now to go up to uprev on the 17th to check there product out and talk to them. so get ready houston!

 

I'll be going with the haltech

 

woooo!

 

mild build block!
push 550...just do iT!

 

he's to scared for that.....lol...



Side note: you need to get your DD now

 

whatever ems you go with, you'll still need the flash on the ecu to get rid of the speed limiter and help with start-up/idle for the same reasons G3po mentioned. And the bigger your injectors, the more it matters.

won't really matter as much with the utec. i could never get over its shitty crossover point between vacuum and boost. annoying as hell. ditched mine for a vpro. haltech platinum is a good choice as well your car is coming along atx. keep at it.

 

I will be in town Tuesday, lets have a meet or something. Hollar!

 

+1 same here, so embarrassing forgetting..... i am saving for haltech as well.

 

ha! i just switched over to haltech thanx to Johnny at Jtran.... lol

 

i wonder if you guys aare having starting issues with your UTEC if you have too high fuel pressure. I never have a hot or cold start issue wiht 600cc injectors.

 

It is abnormal that you don't have the issues.


Haltech was a great upgrade from UTEC with my PL kit too

 

It dosn't have as much to do with base fuel pressure and more , how long it takes a piggyback to rescale the injectors "while cranking.

The stock ECU reflashed to pre-scale the larger injectors is the fastest way to crank and start the engine "before" a Piggyback has time to intervene. If you ever wan't to raise the rev limter , speed limiter etc, , you will need a reflash regardless of UTEC or Haltech. So if you iever ntend to raise these paramters , it is most pradtical to also scale the injectors in the same re-flash. Using a Haltech just gets better from there.

 

Awsome!

 

actually the haltech setup you can adust the idle by adjusting the fuel and ignition maps keeping it in open loop all the time. the down fall of keeping it in open loop all the time is you have to adjust the whole map for partial throttle. its a little tedious but its worth it imo. also, you can adjust for post start enrichement, coolant temp fuel adjustment, iat adjustment also on the haltech setup. bigger injectors or not, haltech will start the car like a normal car due to the paramaters for injector sizing and latency time.

 

I guess i'm on the abnormal condition of not having hot/cold starts. Mine cranks and turns on like stock everytime. I do have a technosquare reflash from when I was NA but thats about it. Wonder why some have problems starting and some don't on the UTEC. Transitions from vaccum to boost hasn't been much of a problem either.

Glad to hear the car is running strong ATX. Gotta get that daily so you won't worry as much.