Tuning q's with uber
 

i got uber up and running on my car but i have a couple issues. i posted up on the uber forums but they have been real slow lately and i havent gotten any answers. so...

issue#1
idle...right after start up it idles real lean, like in the 19's afr. runs like ----. once it gets warm i get low 15's at idle.

issue#2
throttle tip in...anything less then about 25-30% throttle gives me real lean conditions, sputtering and so on. any more than 30% or so and everything seems fine all the way to redline.

so im wondering if these two things are related? the idle i think could be fixed with cold enrich maybe? but i keep reading that it doesnt work. so maybe someone could tell me how they fixed that? the tip in im not sure about i know there has to be somekind of correction in uber for that but im not sure...

Re: Tuning q's with uber
 

anybody? i gotta get this thing running good before sat. gotta race.

by the way the set-up is an N/A z6 built head stock block. p28 with uber and lm-1 wideband. no data logging at the moment. trying to tune this and get the hang of things before i drop my built motor with the turbo in the car.

any suggestions?

Re: Tuning q's with uber
 

#1: Tune it? Check your idle region.. if you're running 19, and you want to be at a 14.7.. you add 22% fuel at your idle area (RPM vs MAP).. If your idle rough (loping, Keep removing 1% timing in the same area until it smooths out. too low, add 1% timing until it's where you want it)

#2: I don't know how UD handles tip-in.. maybe we'll have Fook chime in on that..

Re: Tuning q's with uber
 

well i think fook runs CROME but maybe he has some insight. thats why i say that maybe these two are related, my wideband just took a ---- on me so im back on the stock rom until i get a new sensor. once i get back up i will try to iron out my idle and then work on tip in. but the strange thing is when it warms up everything but the tip in is ok? i know other people have this same issue cause ive read it on the uber forums but nobody ever gets an answer.

Re: Tuning q's with uber
 

sohc mshue and i have 2 threads going right now in the uberdata discussion forum about cold start enrichment not working. it appears that some cars are rich at cold s t art, others are lean. not sure if a connection has been made as to why yet. i also run lean at idle, and im gonna make a post right now to see if i can damage my motor that way.

i think the tps tip in works, but im not 100% sure. good luck with the fix

Re: Tuning q's with uber
 

Well, I asked Blake about your "tip-in" situation, and he doesn't think that 20-30% is considered "tip-in".

It's probably a load issue (meaning your idle is lean, and 20-30% throttle is lean) with your columns having been edited weird. Try to richen up your first 5 columns (the whole column) by about 12% and see if that helps. If it does, then you just need to retun your high vac portions.

Re: Tuning q's with uber
 

okay ill give it a shot tonight and see whats up, ill let you guys know how it goes. thanks!

Re: Tuning q's with uber
 

if you say your runing good after its warmed up just add fuel with the cold enrich. it should work just fine with uber 1.7.