Datamaster question...
Datamaster question... I just finished installing a nitrous kit(dynotune) on my LT1. I am using a 6AL, Blaster coil, and MSD 8982 timing retard box. My question is when the 8982 box is activated will Datamaster show the 4* of timing being pulled or does the ECM still think it's running at full timing(about 34-35* being shown at WOT). So will Datamaster show 30-31* at WOT with the 8982 activated?
I'm just wondering if the MSD box alters the timing after the box and that the ECM won't know that the time timing is being retarded...?
Thanks,
Guy
I'm just wondering if the MSD box alters the timing after the box and that the ECM won't know that the time timing is being retarded...?
Thanks,
Guy
don't know the answer but excellent question. i would like to know this myself. why don't you just retard the timing with the msd box and see what happens on data master assuming you have it already?
I think I may have my 8982 box wired wrong. I have the gray wire going to my nitrous switch power wire. After reading the MSD instructions I think I am going to wire the gray wire to a relay so that when I use the 12V+ from the switch it will turn a relay on and remove the ground from the gray wire. The MSD instructions say that if you don't have the gray wire grounded it will activate the box and retard however much timing your pill is. I think I have been driving around with my 4* pill in and my timing has been retarded 4*. I am going to rewire it and see if can see the change on Datamaster. I will post my results as soon as I do this. I think that's why I am not seeing any change in timing.
Guy
Guy
I just finished installing a nitrous kit(dynotune) on my LT1. I am using a 6AL, Blaster coil, and MSD 8982 timing retard box. My question is when the 8982 box is activated will Datamaster show the 4* of timing being pulled or does the ECM still think it's running at full timing(about 34-35* being shown at WOT). So will Datamaster show 30-31* at WOT with the 8982 activated?
I'm just wondering if the MSD box alters the timing after the box and that the ECM won't know that the time timing is being retarded...?
Thanks,
Guy
I'm just wondering if the MSD box alters the timing after the box and that the ECM won't know that the time timing is being retarded...?
Thanks,
Guy
Yeah I just rewired it and took it for a spin with Datamaster monitoring it. It did not show the 4* of retard. How am I supposed to know it's working properly. I assume it is because my car runs and its hooked up with the 6AL so it must be wired correctly.
Moehorsepower, do you know this for a fact or are you just guessing? That's what I was thinking but I would like a deffinent answer. I am going to call MSD tommorow and see what they say about it.
Thanks so far guys!
Guy
Moehorsepower, do you know this for a fact or are you just guessing? That's what I was thinking but I would like a deffinent answer. I am going to call MSD tommorow and see what they say about it.
Thanks so far guys!
Guy
It's really pretty obvious if you think about it.
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Well it may be obvious but I would still like to know for sure that my timing is being retarded as much as my pill is supposed to retard it. I don't take this stuff for granted.
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if you go to a dyno shop and ask them to hook the car up they will be able to tell if its working or not. they hook up their own timing scanner which is after the fact. you can tell them you don't want a dyno tune you just want one run to make sure your retard box is working. maybe they'll let you do it for a small fee.
On The Tree
Joined: Apr 2007
Posts: 118
Likes: 0
From: Southern Maryland
Have you verified this with a timing light on a few LT1 engines?
I wonder about this too, (wonder if Datamaster is showing the true PCM timing).
The couple of times I have checked actual timing on an LT1 with a timing light it has seemed to show about the same timing as what Datamaster displayed, (and knowing that I make sure to put 4 deg less in TunerCat than what I'm shooting for).
But I'm not confident that I'm seeing the crank timing with the timing light with all that much accuracy.....Have only checked at an idle on the engine dyno and not while at WOT on the engine dyno. At idle timing jumps around quite a bit and you eyeball it and say....looks like about 28 deg to me (average)....what's Datamasater showing???!!!!!!! dyno operator---"About 28 deg!!!" Me, "OK".
Karl
yeah, I have not verified with a timing light, I was just referring to the amount I have programmed in at certain throttle/map conditions with tunercats vs what it displayed in datamaster.
maybe datamaster's number is correct then. I've never seen any concrete data on why they are different or which is correct.
maybe datamaster's number is correct then. I've never seen any concrete data on why they are different or which is correct.
Yeah I just rewired it and took it for a spin with Datamaster monitoring it. It did not show the 4* of retard. How am I supposed to know it's working properly. I assume it is because my car runs and its hooked up with the 6AL so it must be wired correctly.
Moehorsepower, do you know this for a fact or are you just guessing? That's what I was thinking but I would like a deffinent answer. I am going to call MSD tommorow and see what they say about it.
Thanks so far guys!
Guy
Moehorsepower, do you know this for a fact or are you just guessing? That's what I was thinking but I would like a deffinent answer. I am going to call MSD tommorow and see what they say about it.
Thanks so far guys!
Guy
