holley hp efi help
05-30-2012, 07:28 AM
#22
TECH Enthusiast
Thread Starter
iTrader: (2)
Join Date: Jan 2009
Posts: 621
Likes: 0
Received 0 Likes
on
0 Posts
wow yea thats about three times quicker than mine starts lol. care to tell me what all you changed?
also i started having a new problem today, the afr is reading like 15 to 18 at cruising speeds, car sounds fine and if i mash the gas it drops to 12ish, the fuel table says it needs to be about 14 and i have closed loop and compensation turned on but it never gets down that low, im wondering if i may have an exhaust manifold leak or somethin causing it to read that, this mornin i turned closed loop and compensation off and it came and went in spurts it would read 14 ish for a while then sometimes it would jump to like 16.5 to 17. now this was very low load goin down the freeway but i still think that its too high?? anything i can check? also can anyone suggest somewhere i can learn the basics of tuning, i understand most of it i just dont know how to go about actually doing it?
also i started having a new problem today, the afr is reading like 15 to 18 at cruising speeds, car sounds fine and if i mash the gas it drops to 12ish, the fuel table says it needs to be about 14 and i have closed loop and compensation turned on but it never gets down that low, im wondering if i may have an exhaust manifold leak or somethin causing it to read that, this mornin i turned closed loop and compensation off and it came and went in spurts it would read 14 ish for a while then sometimes it would jump to like 16.5 to 17. now this was very low load goin down the freeway but i still think that its too high?? anything i can check? also can anyone suggest somewhere i can learn the basics of tuning, i understand most of it i just dont know how to go about actually doing it?
05-30-2012, 08:26 AM
#23
Sounds like your map is a little choppy. Mine was doing that also I cleaned the map up and it drives much better. I don't transfer from the learn table anymore. I think this is what messes it up a little.
I have found as soon as syncs it should start if the cranking fuel is correct
Tim
I have found as soon as syncs it should start if the cranking fuel is correct
Tim
05-30-2012, 08:03 PM
#27
Here is what I would do. Open a stock ls2 tune and copy the map for the area you are not under boost. This should gave you something nice and smooth to start with then let the closed loop correct from there. My map is going to be way to fat and way different being na.
Tim
Tim
05-30-2012, 08:39 PM
#30
Teching In
Join Date: Aug 2008
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
RNation0001,
How long have you been driving it in learn mode? Mine afr was all over the place until about 50 miles of driving. The best thing i did for mine was make 3 dyno runs that seemed to dial it in really good. Im no expert just my experience.
Mine starts slow too, but post your results when you solve the problem.
How long have you been driving it in learn mode? Mine afr was all over the place until about 50 miles of driving. The best thing i did for mine was make 3 dyno runs that seemed to dial it in really good. Im no expert just my experience.
Mine starts slow too, but post your results when you solve the problem.
05-30-2012, 09:18 PM
#31
TECH Enthusiast
Thread Starter
iTrader: (2)
Join Date: Jan 2009
Posts: 621
Likes: 0
Received 0 Likes
on
0 Posts
well id love to tell u what i found but i went to work on it and try some things and now it wont even start lol, all the rpm says now is syncing sometimes sync then error then sync then error, i have no idea whats wrong now, i changed it back to the lsx 24 one and still nothin but sync. im not to stupid most of the time but now im dumbfounded lol
05-30-2012, 10:00 PM
#33
Getting it to sync quick is what you need to be looking at. On the laptop as soon as mine sees rpm is fires.
Mine is very quick for some reason.
one thing to try is go to custom in the ignition setup and turn off the cam sensor. This will change it to batch fire and may help it start faster.
Tim
Mine is very quick for some reason.
one thing to try is go to custom in the ignition setup and turn off the cam sensor. This will change it to batch fire and may help it start faster.
Tim
05-31-2012, 05:55 AM
#34
TECH Enthusiast
Thread Starter
iTrader: (2)
Join Date: Jan 2009
Posts: 621
Likes: 0
Received 0 Likes
on
0 Posts
ok this mornin i tried it before i went to work and it started again lol, one other thing i forgot to mention was last night i noticed the holley gauge for cts would freak out every now and then and max out then min out then go right back to reading the right temp. i did a log of it idling and it shows the afr target as a straight line and the actual goin up and down from say 12 to 16 super rapidly so quickly that until i logged it i couldnt see it on the screen or on gauge, is this how its supposed to look?
05-31-2012, 10:52 AM
#36
TECH Enthusiast
Thread Starter
iTrader: (2)
Join Date: Jan 2009
Posts: 621
Likes: 0
Received 0 Likes
on
0 Posts
hmm maybe thats what it was idk lol. im goin to dig into it more this weekend, i still cant figure out why my afr is fluctuating so bad, can someone show me what it should look like on a pic of there log or something, cause on mine the target is a straight line and the actual is 2 above to 2 below very rapidly, i cleaned the map sensor and it didnt help, also alot of the time at idle it starts surging and eventually dies sometimes.
05-31-2012, 05:36 PM
#38
TECH Enthusiast
Thread Starter
iTrader: (2)
Join Date: Jan 2009
Posts: 621
Likes: 0
Received 0 Likes
on
0 Posts
ok so i came home and turned the cam sensor off and it fired really quickly however it switched it to bank fire fuel, and it ran decent but the afr was still bouning up and down super rapidly. im going to download the stock tune and try it i guess