typhoon12
Tyhoon12 #0489
After reviewing the datalogs I noticed that whenever there is an increase in boost, the spark retard goes up. I have the Kock Alert open as well and it increases than goes right down. I can maintain boost with no SR or KA but they both increase only at the beginning. Below are the numbers based on peak boosts.
17.1 psi boost = 5.8 Spark Retard
18.7 psi boost = 3.5 Spark Retard
15.5 psi boost = 12.7 Spark Retard
15.5 psi boost = 5.6 Spark Retard
20.0 psi boost = 6.5 Spark Retard
The boost seems very high! I thought max was 14.5-15? Where should the SR be?
Anyone want to review my logs and give me their opinion please let me know. Thanks, Jason
PS - My truck is pretty much stock. Listed below are the mods I did...
-KN air filter in the stock box with the crossover plastic pipe coming from the engine.
-Magnaflow Cat and Muffler (3").
-MSD Distributor
-MSD Plugs
-ACD Plugs gapped per stock spec
-IAC
-TPS
-Starter
-Traced all the Vac lines and there were previously hacked up. Connections all over the place, etc. I believe I have a leak behind the dash because when I accelerate hard and the turbo spools, I hear a gush of air coming from behind the dash, like it is coming through the defrost vents. No hiss or noise when the turbo is not spooling, only when I have boost.
Idles ok but I noticed a few things...
-on cold start in the morning it cranks right up but every so often I hear a "Pisst" coming from the engine. Sounds like someone is purging NOX. Goes away once the truck warms up.
Also, if I put it into Neutral, it rev's higher and smooths out a little. When at a stop, it idles ok but every so often I feel a skip, like a murmmer or something. Not really a misfire but like a slight hesitation.
With all this, I decided the next best thing to get her running better was Datamaster. I did not want to throw money at guessing what was wrong and everyone I talked to said it is well worth the money. Based on the fact I bought the truck and it was stumbling, could not even drive it back and forth to work (about 35 miles) and now I drive it every day to work, I have hope. Just need a little help interpruting the data.
I was scared to go WOT because of the Vac leak. I wanted to run Datamaster first to see if there was anything gleaming STOP. If not, then I would run it WOT. I have read the Datamaster manual and on line posts about what to look for but figured someone else couldhelp me "cheat" and be able to give me a quick overview of what you saw.
17.1 psi boost = 5.8 Spark Retard
18.7 psi boost = 3.5 Spark Retard
15.5 psi boost = 12.7 Spark Retard
15.5 psi boost = 5.6 Spark Retard
20.0 psi boost = 6.5 Spark Retard
The boost seems very high! I thought max was 14.5-15? Where should the SR be?
Anyone want to review my logs and give me their opinion please let me know. Thanks, Jason
PS - My truck is pretty much stock. Listed below are the mods I did...
-KN air filter in the stock box with the crossover plastic pipe coming from the engine.
-Magnaflow Cat and Muffler (3").
-MSD Distributor
-MSD Plugs
-ACD Plugs gapped per stock spec
-IAC
-TPS
-Starter
-Traced all the Vac lines and there were previously hacked up. Connections all over the place, etc. I believe I have a leak behind the dash because when I accelerate hard and the turbo spools, I hear a gush of air coming from behind the dash, like it is coming through the defrost vents. No hiss or noise when the turbo is not spooling, only when I have boost.
Idles ok but I noticed a few things...
-on cold start in the morning it cranks right up but every so often I hear a "Pisst" coming from the engine. Sounds like someone is purging NOX. Goes away once the truck warms up.
Also, if I put it into Neutral, it rev's higher and smooths out a little. When at a stop, it idles ok but every so often I feel a skip, like a murmmer or something. Not really a misfire but like a slight hesitation.
With all this, I decided the next best thing to get her running better was Datamaster. I did not want to throw money at guessing what was wrong and everyone I talked to said it is well worth the money. Based on the fact I bought the truck and it was stumbling, could not even drive it back and forth to work (about 35 miles) and now I drive it every day to work, I have hope. Just need a little help interpruting the data.
I was scared to go WOT because of the Vac leak. I wanted to run Datamaster first to see if there was anything gleaming STOP. If not, then I would run it WOT. I have read the Datamaster manual and on line posts about what to look for but figured someone else couldhelp me "cheat" and be able to give me a quick overview of what you saw.
