PT88 turbo LS6 wont pull past 5k, w/dyno graph
04-28-2011, 11:26 PM
#63
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My car makes around 1200 hp and runs a stock dwell table and stock truck coils with the big taylor wires and a tr6.
I honestly believe the non resistor plugs cause interferance issues with the stock ecm/coils.
I honestly believe the non resistor plugs cause interferance issues with the stock ecm/coils.
04-29-2011, 10:04 AM
#66
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About a year ago, I had a car on the dyno. Procharged bbc. While n the dyno, I changed plugs........the next pull netted 160 rwhp and 200 ft lbs......
The kicker.....it ran fine before. No miss, same tune, no knock, etc etc.....infact driving the car before was fine.....just down on power. It didnt run flat, just didnt make power. $20 set of plugs and 160 rwhp.
When it happened, everyone was .......what.....? what was that?....
The kicker.....it ran fine before. No miss, same tune, no knock, etc etc.....infact driving the car before was fine.....just down on power. It didnt run flat, just didnt make power. $20 set of plugs and 160 rwhp.
When it happened, everyone was .......what.....? what was that?....
04-29-2011, 10:12 AM
#67
I'm wondering if its a lifter issue as well?
04-29-2011, 10:27 AM
#68
Any more info as to why it might be the drums? Mine falls flat early with my Th400, I always figured it was just first gear not keeping much load on it, I only get 6 - 8 psi in first. Then it goes to 10 in other gears.
04-29-2011, 11:08 AM
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At this point I've got plugs, lifters, springs and the trans as an option. Hurts to pull the trans out and send it to the shop as a guess.
Could this REALLY be a plug issue? I mean, BRAND NEW BR7EF plugs were installed on the dyno, gapped at .17-.22...
04-29-2011, 12:13 PM
#72
i wouldnt be surprised if you change the plugs the problem goes away... i have "never" had good luck with the non-projected tip plugs in a LS engine with high cylinder pressure.... if its not that i likely is some on the ground circuit of the coil packs
04-29-2011, 12:47 PM
#73
Conversely I would be very surprised if you changed the plugs and that fixed it as I have never had a problem with non-projected tip plugs. Pretty much all higher powered vehicles I tune run non-projected tip plugs and they all run without issue. I guess that's not to say that you may have had a bad plug out of the box because I have seen that before.
04-29-2011, 12:57 PM
#74
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I'll call around and see if I can find some of these BP7EFS plugs and pop those in for my cruise tonight...
I took it for a drive today after resetting the gap on the BR7EF plugs (slightly warmer than it has been lately) and the car ran just fine on pump gas and ~12psi. No stumble, no wall, no nothing.
04-29-2011, 01:01 PM
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Conversely I would be very surprised if you changed the plugs and that fixed it as I have never had a problem with non-projected tip plugs. Pretty much all higher powered vehicles I tune run non-projected tip plugs and they all run without issue. I guess that's not to say that you may have had a bad plug out of the box because I have seen that before.
04-29-2011, 01:17 PM
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keep us updated im curious to see what it is.
from what plug to what plug tho?!
About a year ago, I had a car on the dyno. Procharged bbc. While n the dyno, I changed plugs........the next pull netted 160 rwhp and 200 ft lbs......
The kicker.....it ran fine before. No miss, same tune, no knock, etc etc.....infact driving the car before was fine.....just down on power. It didnt run flat, just didnt make power. $20 set of plugs and 160 rwhp.
When it happened, everyone was .......what.....? what was that?....
The kicker.....it ran fine before. No miss, same tune, no knock, etc etc.....infact driving the car before was fine.....just down on power. It didnt run flat, just didnt make power. $20 set of plugs and 160 rwhp.
When it happened, everyone was .......what.....? what was that?....
04-29-2011, 01:45 PM
#78
Conversely I would be very surprised if you changed the plugs and that fixed it as I have never had a problem with non-projected tip plugs. Pretty much all higher powered vehicles I tune run non-projected tip plugs and they all run without issue. I guess that's not to say that you may have had a bad plug out of the box because I have seen that before.
04-29-2011, 02:48 PM
#79
Ryne, I like how you think cuz that's exactly what I called it at first myself (coil pack ground issue).
I'll call around and see if I can find some of these BP7EFS plugs and pop those in for my cruise tonight...
I took it for a drive today after resetting the gap on the BR7EF plugs (slightly warmer than it has been lately) and the car ran just fine on pump gas and ~12psi. No stumble, no wall, no nothing.
I'll call around and see if I can find some of these BP7EFS plugs and pop those in for my cruise tonight...
I took it for a drive today after resetting the gap on the BR7EF plugs (slightly warmer than it has been lately) and the car ran just fine on pump gas and ~12psi. No stumble, no wall, no nothing.
