- Oct 28, 2009
- 2
- 0
- 0
MyCombo:
A9P w/TweecerRT
5.0, .030 over
E-303 cam
24LB injectors
76mm C&L yellow tube
75mm TB
GT-40 intake
AOD, 3000stall
Changes Made to Stock Tune:
CID, Injector slopes, MAF Transfer, TB idle airflow, Injector Timing, Neutral and Drive idle air, load scaling, idle rpm, spark tables, injector battery voltage offset,WOT spark, WOT fuel.
The Problem:
It runs great and I see no real issues to speak of there. The only problem I have is when starting the car, the engine immediately hits ~1300rpm and goes to drop to idle but just falls all the way down or comes back up surging and slowly stabilizing. What i see from the data log is the IAC stays around ~45% but the PW drops to 2ms as the rpms fly up starting, as the rpms drop the PW climbs and has been as high as 12ms when trying to pull back up from under 500rpm.
My idle is about 4ms at 750rpm. I can raise my injector low slope and the problem gets better, I have had it too 100 and the car will start rite up reving to about 900rpm solid and slowly drops to idle but HEGO's are way lean with this setting. Not that I want to run it this way but just looking for the cause.
This makes me guess that it starts up to rich or something causes the PW to go down to 2ms when still pulling 30 some kg/hr.
Here are some links to datalogs and the tune file.
Mustang Base.binTune
Startup Surge.csvEngine Start and surge then die
Driving Datalog.csvDriving Datalog
And ideas or similar build tunes that work would be great help.
Thank You
A9P w/TweecerRT
5.0, .030 over
E-303 cam
24LB injectors
76mm C&L yellow tube
75mm TB
GT-40 intake
AOD, 3000stall
Changes Made to Stock Tune:
CID, Injector slopes, MAF Transfer, TB idle airflow, Injector Timing, Neutral and Drive idle air, load scaling, idle rpm, spark tables, injector battery voltage offset,WOT spark, WOT fuel.
The Problem:
It runs great and I see no real issues to speak of there. The only problem I have is when starting the car, the engine immediately hits ~1300rpm and goes to drop to idle but just falls all the way down or comes back up surging and slowly stabilizing. What i see from the data log is the IAC stays around ~45% but the PW drops to 2ms as the rpms fly up starting, as the rpms drop the PW climbs and has been as high as 12ms when trying to pull back up from under 500rpm.
My idle is about 4ms at 750rpm. I can raise my injector low slope and the problem gets better, I have had it too 100 and the car will start rite up reving to about 900rpm solid and slowly drops to idle but HEGO's are way lean with this setting. Not that I want to run it this way but just looking for the cause.
This makes me guess that it starts up to rich or something causes the PW to go down to 2ms when still pulling 30 some kg/hr.
Here are some links to datalogs and the tune file.
Mustang Base.binTune
Startup Surge.csvEngine Start and surge then die
Driving Datalog.csvDriving Datalog
And ideas or similar build tunes that work would be great help.
Thank You