Going back to 94170015
I am still getting the 2k cold rev with this rom. When the car is cold the rpms will shoot to 2k and then very slowly drop to the idle speed specified in the neutral idle table. If the car is revved the idle shoots back to 2k. I have tried egr on, egr off, and different periphery settings. The only thing I can think of (not sure if this would cause it) is the throttle shaft seals. I know they are leaking, can this cause it?
so I don't have to wait too long.Since I have my injectors scaled pretty good I have only one problem. When the engine is cold, I get very lean throttle tip in. I have to rev the car high before going into first, and any other gear. I am also getting rich tip in, once warm as I sometimes shoot a little flame or pop although my afr's are 13-12.5 on low boost tip in (e70/85). The flame/pop happens usually during decel in 3rd/4th and I barely touch the gas for it to happen. It is sporadic though.
-Will
Thread Starter
Evolved Member
iTrader: (22)
Joined: Nov 2003
Posts: 2,408
Likes: 7
From: Northern KY near Cincy
The 2K rev at cold start is very normal. It should rev to about 2K and then slowly decay as the car gets warmed.
Check for vacuum leaks too. You would be amazed at what little pin holes can do to your idle stability.
Make sure you are not running too much timing in the 1500 rpm and lower and 70 load and lower. This could cause idle hunting.
You might also consider a slight BISS adjustment.
If you have not already done so, tear apart your throttle body and clean the heck out of it. Even pull the BISS out and clean it and the holes around it. Q-tips and Throttle body cleaner work great. The 03 TB have a goofy little air diverter that is on a coil spring. Over time it can get gunked up. Clean it good. Since you are going to have it apart you may as well replace the seals too.
Check for vacuum leaks too. You would be amazed at what little pin holes can do to your idle stability.
Make sure you are not running too much timing in the 1500 rpm and lower and 70 load and lower. This could cause idle hunting.
You might also consider a slight BISS adjustment.
If you have not already done so, tear apart your throttle body and clean the heck out of it. Even pull the BISS out and clean it and the holes around it. Q-tips and Throttle body cleaner work great. The 03 TB have a goofy little air diverter that is on a coil spring. Over time it can get gunked up. Clean it good. Since you are going to have it apart you may as well replace the seals too.
The 2K rev at cold start is very normal. It should rev to about 2K and then slowly decay as the car gets warmed.
Check for vacuum leaks too. You would be amazed at what little pin holes can do to your idle stability.
Make sure you are not running too much timing in the 1500 rpm and lower and 70 load and lower. This could cause idle hunting.
You might also consider a slight BISS adjustment.
If you have not already done so, tear apart your throttle body and clean the heck out of it. Even pull the BISS out and clean it and the holes around it. Q-tips and Throttle body cleaner work great. The 03 TB have a goofy little air diverter that is on a coil spring. Over time it can get gunked up. Clean it good. Since you are going to have it apart you may as well replace the seals too.
Check for vacuum leaks too. You would be amazed at what little pin holes can do to your idle stability.
Make sure you are not running too much timing in the 1500 rpm and lower and 70 load and lower. This could cause idle hunting.
You might also consider a slight BISS adjustment.
If you have not already done so, tear apart your throttle body and clean the heck out of it. Even pull the BISS out and clean it and the holes around it. Q-tips and Throttle body cleaner work great. The 03 TB have a goofy little air diverter that is on a coil spring. Over time it can get gunked up. Clean it good. Since you are going to have it apart you may as well replace the seals too.
I am also getting lean tip in issues when it is cold. The car bogs on take off.
I received my mil spec seals so I am going to see if that helps.
Thread Starter
Evolved Member
iTrader: (22)
Joined: Nov 2003
Posts: 2,408
Likes: 7
From: Northern KY near Cincy
The "Accel enrich base vs engine temp" table is the initial rich tip adder when you mash the gas to accelerate. Some adjustment might be necessary because of your injector/fuel combo. Higher is richer, lower is leaner.
For those that are having cold start issues please do the following......
1) make sure your "Start IPW Latency mcsec" matches your 14.06v Injector latency value
2) "Percent Low Timing Trim vs Coolant Temp" controls how much of the table in step 3 is used
3) Low Coolant Temp Timing Trim" is the timing pulled when the engine is cold. Most applications won't need timing to be pulled this much because there isn't a cat that needs to be rapidly warmed. Adjust as necessary.
OPTIONAL
"Idle Stability Timing Control" The first values sets the sensitivity and the second value sets the range. Sometimes the range can be reduced to help stabilize idle.
"Desired ISCV tables" set the ISCV steps at a given temp and engine condition. Raising the values increases the airflow into the engine. Too high will cause CEL codes.
"Desired Idle RPM tables" must be tapered higher in colder temps.
For those that are having cold start issues please do the following......
1) make sure your "Start IPW Latency mcsec" matches your 14.06v Injector latency value
2) "Percent Low Timing Trim vs Coolant Temp" controls how much of the table in step 3 is used
3) Low Coolant Temp Timing Trim" is the timing pulled when the engine is cold. Most applications won't need timing to be pulled this much because there isn't a cat that needs to be rapidly warmed. Adjust as necessary.
OPTIONAL
"Idle Stability Timing Control" The first values sets the sensitivity and the second value sets the range. Sometimes the range can be reduced to help stabilize idle.
"Desired ISCV tables" set the ISCV steps at a given temp and engine condition. Raising the values increases the airflow into the engine. Too high will cause CEL codes.
"Desired Idle RPM tables" must be tapered higher in colder temps.
The arrow points to a table that has the settings that cured my 2k rev completely.
when it was warm I never had a problem but when it got <60*F it was 2k rev. as you can see the values in the lower temp areas are lower.
Settings came out of a ralliart(tm) rom. The table on the right is stock.
My idle is extremely steady with the these settings and never stalls. I've matched biss/idle rpm, with the actuator test on or off the idle is the same.
when it was warm I never had a problem but when it got <60*F it was 2k rev. as you can see the values in the lower temp areas are lower.
Settings came out of a ralliart(tm) rom. The table on the right is stock.
My idle is extremely steady with the these settings and never stalls. I've matched biss/idle rpm, with the actuator test on or off the idle is the same.
Newbie
Joined: Apr 2009
Posts: 30
Likes: 0
From: Blacksburg Va (VT)
The arrow points to a table that has the settings that cured my 2k rev completely.
when it was warm I never had a problem but when it got <60*F it was 2k rev. as you can see the values in the lower temp areas are lower.
Settings came out of a ralliart(tm) rom. The table on the right is stock.
My idle is extremely steady with the these settings and never stalls. I've matched biss/idle rpm, with the actuator test on or off the idle is the same.
when it was warm I never had a problem but when it got <60*F it was 2k rev. as you can see the values in the lower temp areas are lower.
Settings came out of a ralliart(tm) rom. The table on the right is stock.
My idle is extremely steady with the these settings and never stalls. I've matched biss/idle rpm, with the actuator test on or off the idle is the same.
Thread Starter
Evolved Member
iTrader: (22)
Joined: Nov 2003
Posts: 2,408
Likes: 7
From: Northern KY near Cincy
