callmeebryan
Member
- Joined
- Jun 24, 2007
sounds like a vacuum leak to me?
I thought so aswell... but i triple checked every vacuum line and everything seems perfect.
sounds like a vacuum leak to me?
Crap sorry guys, i meant to say OPEN loop. I got the car idling in open loop and am having those problems. Let me Repost it with the correct terms
Ok guys, i got my car to idle in OPEN loop. Its idling pretty good right around 13.7-14AFR. The issue im having now is that the car hunts real bad when i put it in reverse or drive in idle. I've tried adding timing trim but that didnt seem to help at all. I have it running at 30* at idle.
sounds to me like there is a vac leak or you have the gain set to high on the iac settings. try that also what are you tring to idle the motor at? also try lowering the timing a bit at idle also from what i have seen that the buicks want to be a little rich at an idle.. try richen it up. what i had to do is set the A/F ratio and timing witht he car idling and in gear. i have my timing set @ like 18-20 degrees at idle.
I agree... hunting is the IAC settings (gain) too high. They do like a richer idle for smoothness. mid-high 12's seem to net me the best. Timing is 25. Much higher it want to act funky. (Open loop)
My idle is about mid 700rpms.
As I stated before, I go closed at 1200-6000 I'm at about 3-5% correction at WOT though a pass now.
"P" Gain is set to 18
"D" Gain set to 5
That's just how mine is setup and working.
The timing I setup for spool is helping (high timing) I've got a very tight converter so I need all the help I can get. I betterd my 60' with launching with 10psi. 1.65' The car's been 1.48's before I just need to get there with the new setup. Takes some time...
~Scott
I know this may not necessarily help anyone here but i thought id share what I learned from this thread and some others, Tonight after fixing a glitch with the software I got to spend some time tuning the car which I havent done in a year, mine always "seemed" to like to run rich at idle and I dealt with the fumes which I hated, I remembered every time I would lean it out a bit the idle would hunt and the car would die so I got it set up in the 11XX range in closed loop idle which was smooth but the car stunk. NOW from all the info I gathered I setup my closed loop at 1500,Lowered the timing for idle to 25, and am getting in the 14.00 or leaner range in idle. The car sounds better,responds better and best of all doesnt stink, Now im taking this step by step and have no road time with it but all adjustments were made with the car in drive and me snapping the pedal, A big thing I could also tell is that with the lowered timing my egt's are in the 800-850* (idle) and the turbo is spooling much faster as the egt's are climbing faster as well. I think a big myth going around (or at least I thought) is that more timing will spool the turbo better NOW i dont completely doubt that but lower timing with higher egt's is prepping the turbo better and keeping the housing hot.those are my thoughts and I look forward to reading more and hope this great thread continues!!
I will keep that in mind when I begin to tune cruising parameters.Since im posting One thing that has got me stumped is every conversion calculator on the internet converts 100kpa to 14.5 psi of boost, This makes no sense at all looking at a FAST map as my idle numbers are in the 80 kpa range, Whats the deal ? heres one here PSI-KPA Pressure Converter what am I doing wrong?