gp1817

Im boosted with dezod s1 kit,with the aem fic,fully tuned....Ive noticed lately,every time i fill up gas 93 that is from a quarter of tank,usually dont let it get lower then that,only if i have to,but lately i been filling it up,and the rpms are bouncy like 1st and 2nd gear,from neutral,after a few secs of driving its evens out,is the because of the older gas and the fresh gas mixing plus the tune has the ajust,something like that,or does the tune have to be tweaked...it done it before,but not as bad,was curious about it

burgandybomber

iTrader: (1)

I had this problem really bad stock. It did it after boosting pretty bad as well. My tune from Paul over at Dezod has cured the massive (revved up to 2k sometimes higher) rev swings. She only pulses to maybe 1200.

gp1817

How did,you come across that it was tune related...did you datalog or did you have paul look at the the tune ,i know if i let the car idle for a few after getting gas,it helps some what...its annoying you feel like the car is gonna stall...i know after a few mins of driving and the fuel trims ajust,,,car is fine..but mines i beleive goes to maybe 12-1300 rpms,then bogs down below 700 rpms then up again then finally settles down,wanna see if i can cure it completely,

paul_dezod

I had fully tuned burgandybomber's car.

gp1817

Does it sound like a tuning issue ????... should i data log the issue and show my tuner,....and see whats up

paul_dezod

It could potentially be or even mechanical like a small vac leak too can cause some hunting or erratic idle.

gp1817

would a weak battery cause that idle issue ??

paul_dezod

Without a doubt it can. Injector battery offset is the initial multiplier in which all fuel calculations are measured.

gp1817

wow,did not know that,i have a optima red top thats 4 yrs old going on 5...i ,think it may be that time to replace it....