Anyone ever mess with spark dwell in HPT?
#2
Former Moderator :(
Join Date: Jan 2005
Location: BOULEVARDS OF BOOST CALIFORNIA
Posts: 586
Likes: 0
Received 0 Likes
on
0 Posts
In most cases if its not broke don't fix it the spark dwell time is how long the coils get saturated. GM is a little easy on the coils so bumping them up a little won't hurt and it may help. Motec says to run the coils at 7 ms of dwell time and up to 9 ms in drag only cases, because the coils won't last long at that setting. Gm sets them at 4-5 ms and I guess they will last forever there so setting them at 6-7 ms should'nt hurt anything, Its kind of like getting a free MSD, more spark. If you net no better times and if your truck runs the same I would leave the settings stock.
#4
TECH Junkie
iTrader: (2)
Originally Posted by Crash Dummy
In most cases if its not broke don't fix it the spark dwell time is how long the coils get saturated. GM is a little easy on the coils so bumping them up a little won't hurt and it may help. Motec says to run the coils at 7 ms of dwell time and up to 9 ms in drag only cases, because the coils won't last long at that setting. Gm sets them at 4-5 ms and I guess they will last forever there so setting them at 6-7 ms should'nt hurt anything, Its kind of like getting a free MSD, more spark. If you net no better times and if your truck runs the same I would leave the settings stock.
Trending Topics
#8
TECH Regular
Thread Starter
iTrader: (12)
Join Date: Sep 2004
Location: southern NJ
Posts: 427
Likes: 0
Received 0 Likes
on
0 Posts
I heard somewhere that upping the dwell time a little increased torque. I don't think I'm brave enough to try it without hearing from someone who has done it successfully.
#9
Former Moderator :(
Join Date: Jan 2005
Location: BOULEVARDS OF BOOST CALIFORNIA
Posts: 586
Likes: 0
Received 0 Likes
on
0 Posts
I will put together some information on this and post it as soon as I can. The longer you saturate the coils the bigger the spark but having it set to high makes them get hot. stock is 4-5 ms you can raise it to 7 ms for street and 9ms for drag only BUT DO NOT run 9ms on the street or you will be buying coils soon