Guys will new Yank Converters
Converter lock/unlock comes from misfire detection.
Misfire detect comes from crank sensor irregularity.
This can be real misfires, it can be imbalance in the
rotating assembly, or it can be too much torque ripple
against a too-light flywheel mass.
Aftermarket converters as a minimum will give you
the lighter mass and magnify anything else you've got
going on. They may or may not add imbalance to the
crank.They will for sure make any internal unevenness
show more plainly and there's your possibility of misfire
detect (false, but still).
My old TCI was pretty well behaved for this. TCI spin
balances 100%, even the cheap Streetfighter. My
Fuddle needed misfire detection killed to lock. Fuddle
only measures tolerances and doesn't do dynamic
balancing.
Other manufacturers, I have not seen declare one
way or the other. But tell you what, if I buy another
converter it will for sure be spun balanced. Don't
care who, but anybody who wanted my business
would have to step up to that. Along with all the
other demands that I have built into mine now.
Misfire detect comes from crank sensor irregularity.
This can be real misfires, it can be imbalance in the
rotating assembly, or it can be too much torque ripple
against a too-light flywheel mass.
Aftermarket converters as a minimum will give you
the lighter mass and magnify anything else you've got
going on. They may or may not add imbalance to the
crank.They will for sure make any internal unevenness
show more plainly and there's your possibility of misfire
detect (false, but still).
My old TCI was pretty well behaved for this. TCI spin
balances 100%, even the cheap Streetfighter. My
Fuddle needed misfire detection killed to lock. Fuddle
only measures tolerances and doesn't do dynamic
balancing.
Other manufacturers, I have not seen declare one
way or the other. But tell you what, if I buy another
converter it will for sure be spun balanced. Don't
care who, but anybody who wanted my business
would have to step up to that. Along with all the
other demands that I have built into mine now.
Originally Posted by Dave00C5
Sure you will. You like your yank im proud of ya. You better get a drag car with a chute before you get talkin ****. 
also check you brake cruise switch at the pedal for adjustment, damage or loose wire
I have seen many things that will make the trans lock and unlock the converter and this is one cause that is overlooked often.
I have seen many things that will make the trans lock and unlock the converter and this is one cause that is overlooked often.
Originally Posted by JMBLOWNWS6
I didnt mean drag your ***. LOL I hate the way the net comes off sometimes. I dont care to have a drag car with a chute tough.
Originally Posted by Dave00C5
Just blowin ya **** my friend. Lol, No i had a few with issues is all. Theres many of you guys who love the yanks. It may be my luck or the application. So far so good on my vig.
https://ls1tech.com/forums/showpost....8&postcount=17
Many times that's due to misfire counts being on the high side. Yank is good stuff, had a few of their converters and would buy again.
Many times that's due to misfire counts being on the high side. Yank is good stuff, had a few of their converters and would buy again.
This thread came back from the dead? I had the tuner raise the misfire codes & she stays locked now..I was having a sloppy lockup problem here recently, seems to be OK now for some reason. I am not going to worry about it anymore 
Originally Posted by Dan
Thanks Performa, 1 more ? Could it be fixed without me spending another $500 on a dyno tune or can someone that knows what they are doing program it to lock?