Where should I go first in attempting to get this thing to idle? Car will not run enless I give it 20% throttle. Stalls if I give it less than 10% throttle.
Decent size cam .602/.648 112 with new intake and heads.
Please help. I know how to do a MAF tune but thats about it. Not asking for someone to do anything for me (Enless you want to) just point me to some info.
Last edited by TDCRacing; 12-28-2012 at 03:43 PM.
2004 GTO LS1~HP Tuners~AFX W/B~PRC 227 heads~.644/.598-231/234-111(TQV3)~Kooks 1 7/8 headers~Stock injectors~Fast 102 LSXR Intake~Fast 102 TB~CAI cold air intake~Yella Terra Roller Rockers~Fast Fuel Rails~
Dyno's are for sissy's, See you on the street.
Ttt
2004 GTO LS1~HP Tuners~AFX W/B~PRC 227 heads~.644/.598-231/234-111(TQV3)~Kooks 1 7/8 headers~Stock injectors~Fast 102 LSXR Intake~Fast 102 TB~CAI cold air intake~Yella Terra Roller Rockers~Fast Fuel Rails~
Dyno's are for sissy's, See you on the street.
a couple of things look odd. first i would want to know why you have no timing at idle and secondly one o2 bank is super fat and the other is dead lean. i would see what happens when you run it in open loop. then use the bidirectional controls to manipulate fuel and timing so you can at least get a handle on where you need to go with it. i am assuming you do not have a wideband?
04 6.0 silvy china turbo
87 gn
03 stroker evo ww
00 ss camaro
I noticed the timing at idle as well ( or from 0-1700 rpm's). At times I was running negative timing. At first the car idled fine. IT was running open headers. The car would actually idle around 850 rpm's.
Im showing both sensor 1 (bank 1 and 2) are active on both scans. Did I mis something? Rear o2's are removed. I do have a wideband. not hooked up yet.
2004 GTO LS1~HP Tuners~AFX W/B~PRC 227 heads~.644/.598-231/234-111(TQV3)~Kooks 1 7/8 headers~Stock injectors~Fast 102 LSXR Intake~Fast 102 TB~CAI cold air intake~Yella Terra Roller Rockers~Fast Fuel Rails~
Dyno's are for sissy's, See you on the street.
you have a serious map issue. it should read around 25kpa at idle. i think you have a mechanical problem. but i would for sure try it in open loop.
04 6.0 silvy china turbo
87 gn
03 stroker evo ww
00 ss camaro
I have been looking over the car for mechinical issues and I think I have found the issue. Two dead cylinders on the same bank. Cylinders 6 and 8. The tubes on the new stainless steel headers I just installed are a different color on those cylinders.
That would explain the difference in 02 reading from bank to bank right? what about the map issue?
What would I have to load in the scanner to be able to look for possible bad injectors or bad coil pack?
2004 GTO LS1~HP Tuners~AFX W/B~PRC 227 heads~.644/.598-231/234-111(TQV3)~Kooks 1 7/8 headers~Stock injectors~Fast 102 LSXR Intake~Fast 102 TB~CAI cold air intake~Yella Terra Roller Rockers~Fast Fuel Rails~
Dyno's are for sissy's, See you on the street.
engine diag>misfire. and if you have a old school timing light or noid put it on 6 and 8 and see what you get. pulling a plug could'nt hurt either.
04 6.0 silvy china turbo
87 gn
03 stroker evo ww
00 ss camaro
pulling both plugs on cylinders that are suspected dead resulted in no engine running change. There dead for sure. Now I wonder why.....
what should i be looking for on the missfire section? never explored that section before
2004 GTO LS1~HP Tuners~AFX W/B~PRC 227 heads~.644/.598-231/234-111(TQV3)~Kooks 1 7/8 headers~Stock injectors~Fast 102 LSXR Intake~Fast 102 TB~CAI cold air intake~Yella Terra Roller Rockers~Fast Fuel Rails~
Dyno's are for sissy's, See you on the street.
Also could this issue have caused my increased map kpa's at idle?
2004 GTO LS1~HP Tuners~AFX W/B~PRC 227 heads~.644/.598-231/234-111(TQV3)~Kooks 1 7/8 headers~Stock injectors~Fast 102 LSXR Intake~Fast 102 TB~CAI cold air intake~Yella Terra Roller Rockers~Fast Fuel Rails~
Dyno's are for sissy's, See you on the street.
put misfire 6 or 8 in the table. but that ship has sailed and you allready know theyre dead. no spark, no fuel, or no compression is the next question. and yes that would produce your high map reading. did you run it with the plugs out and get the wiz shocked out of you?
04 6.0 silvy china turbo
87 gn
03 stroker evo ww
00 ss camaro
Originally Posted by robbyredneck
Lol I ment to say I pulled the plug wires. Not the plugs them selves. I can only imagine how that would feel.
I have known working parts from othe lsx engines. Looks like tomorrow I will be swapping injectors coilpacks and possibly removing a valve cover to inspect under there. I don't think two of anything would likely go bad at the same time.
2004 GTO LS1~HP Tuners~AFX W/B~PRC 227 heads~.644/.598-231/234-111(TQV3)~Kooks 1 7/8 headers~Stock injectors~Fast 102 LSXR Intake~Fast 102 TB~CAI cold air intake~Yella Terra Roller Rockers~Fast Fuel Rails~
Dyno's are for sissy's, See you on the street.
Lift isn't useful, what is the duration?
What are the other mods?
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
Cam specs:
.644 .598
111 LSA
Duration 231 234
Mods in SIG
2004 GTO LS1~HP Tuners~AFX W/B~PRC 227 heads~.644/.598-231/234-111(TQV3)~Kooks 1 7/8 headers~Stock injectors~Fast 102 LSXR Intake~Fast 102 TB~CAI cold air intake~Yella Terra Roller Rockers~Fast Fuel Rails~
Dyno's are for sissy's, See you on the street.
For starters increase your idle speed when hot to near 950 until you can find a better sweet spot. Also add about 5 g/sec to the idle airflow table for now. Fix your idle spark tables too, they don't look good. Go back to a stock Fbody file and run 24-26 in the idle cells (just add the the entire table to get started then tweak later). Your VE also looks way too high in the idle cells.
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
Before posting this I read about increasing idle to 950. I will do that. Add 5g/sec across the whole idle airflow vs. coolant temp vs gear table. Done.
Is the idle airflow mainly have control over the IAC and how it operates vs coolant temp?
Spark tables are stock just to let you know. The entire tune is as I have not made any changes yet. Will any table out of a transam or camaro with the ls1 work? Or is there a particular year that is better?
I have not done enough logging with a correctly running engine to know where map at idle usually is. But looking at the stock primary ve table I am seeing numbers in the 49-70 (depending on RPM and MAP). Do you mind telling me what range I should be seeing?
Last edited by TDCRacing; 12-30-2012 at 07:24 PM.
2004 GTO LS1~HP Tuners~AFX W/B~PRC 227 heads~.644/.598-231/234-111(TQV3)~Kooks 1 7/8 headers~Stock injectors~Fast 102 LSXR Intake~Fast 102 TB~CAI cold air intake~Yella Terra Roller Rockers~Fast Fuel Rails~
Dyno's are for sissy's, See you on the street.
By the way I had two collapsed lifters. While some valvetrain noise on startup is normal it suprises me that I did not hear anything more. Will hopefully have everything back together in the morning. Pushrods just missed the retaining cup on the rocker and gouged the side a little bit. Pushrod was wedged in between the rocker and the side of the head. The cam pushed the lifters up in the lifter bore and did not make any negative contact with the cam. I removed the Cam was inspected along with all of the lifters.
2004 GTO LS1~HP Tuners~AFX W/B~PRC 227 heads~.644/.598-231/234-111(TQV3)~Kooks 1 7/8 headers~Stock injectors~Fast 102 LSXR Intake~Fast 102 TB~CAI cold air intake~Yella Terra Roller Rockers~Fast Fuel Rails~
Dyno's are for sissy's, See you on the street.
Regarding idle and the target idle speed table, Is this usually where to go and change values at if you want to obtain a lower or higher idle rpm?
I know that is what I am trying to achive but just curious if this is usually the only table that has to be altered when trying to acheive this.
Also, When using the table for idle spark advance, since I have a 6 speed I would be using the in gear table only correct? and should copy the same table from an f body file.
Would you recomed adding .25 to my maf table across the board since I am obviously reading more g/sec than stock? This will be only untill I can at least do a maf tune on the car if not a sd tune or both. Basicly just to get things running a little better.
Last edited by TDCRacing; 12-30-2012 at 07:41 PM.
2004 GTO LS1~HP Tuners~AFX W/B~PRC 227 heads~.644/.598-231/234-111(TQV3)~Kooks 1 7/8 headers~Stock injectors~Fast 102 LSXR Intake~Fast 102 TB~CAI cold air intake~Yella Terra Roller Rockers~Fast Fuel Rails~
Dyno's are for sissy's, See you on the street.
do a good startup log when you get it back together. so we can start fresh.
04 6.0 silvy china turbo
87 gn
03 stroker evo ww
00 ss camaro
The tune you posted isnt stock. The repository tune has missing parameters
Last edited by ppxstnr; 12-30-2012 at 10:11 PM.
I'm confused, this should be the stock tune for my car that I saved before altering my current tune that I am working on now.
What makes you think this is not mine. Ill check when I get back on my laptop to make sure.
2004 GTO LS1~HP Tuners~AFX W/B~PRC 227 heads~.644/.598-231/234-111(TQV3)~Kooks 1 7/8 headers~Stock injectors~Fast 102 LSXR Intake~Fast 102 TB~CAI cold air intake~Yella Terra Roller Rockers~Fast Fuel Rails~
Dyno's are for sissy's, See you on the street.
Reply With Quote