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Old 11-18-2012, 02:14 PM   #1
05_wRex
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Member#: 170097
Join Date: Jan 2008
Chapter/Region: South East
Location: Chattanooga, TN
Vehicle:
2007 WRX STi PTE6266
OBP

Default 2007 STi AEM v1 pte 6266 and ID1000's duty cycle?

So I recently picked up an AMS built 2007 STi running an aem v1 ems. Here is the complete mod list:

Manley Turbo-Tuff I Beam Rods
Clevite Rod and Main Bearings
Polished OEM Crank
Custom JE 9.0:1 Pistons with Upgraded Wrist Pins
ARP L19 Head Studs
GSC S2 Cam Shafts
GSC Beehive Valve Springs and Titanium Retainers
Supertech +1.0mm Intake Valves
Supertech +1.0mm Inconel Exhaust Valves
3 Angle Valve Job
Hand Ported and Polished Head Cases

AMS Air Pump/EGR Delete
Gates Racing Kevlar Timing Belt
NGK Iridium 1 Step Colder Spark Plugs
TGV Delete (Welded and Blended)
Injector Dynamics 1000cc Injectors
Aeromotive 340lph Fuel Pump
AMS 900x Turbo Kit
  • PTE 6266 Ceramic Ball Bearing Turbo
  • 4 Intake
  • Cast 2 Up Pipe
  • Catless Downpipe
  • TiAL 44mm MVR External Wastegate

P&L Titanium Tip Catback Exhaust
AMS Front Mount Intercooler and Piping Kit
TiAL Q Blow Off Valve
Omnipower 4 Bar MAP Sensor
AEM Intake Air Temperature Sensor
AEM Standalone Engine Management System (CURRENTLY RUNNING THIS)
MP Tuning 2007 STI AEM Adapter Harness
3 Port MAC Boost Control Solenoid
Allstar Oil Catch Can
AMS Lightweight Battery Kit
ACT XTSS Full Faced Clutch
DC Sports Titanium Strut Bar

AEM Wideband o2 Air/Fuel Ratio Gauge
Autometer 30 vac/30 psi Boost Gauge

Car was tuned at AMS on 93 octane @ 25 psi

I was doing some logs last night and saw 106.8% injector duty cycle. Looking at my maps in pulse width and using those numbers gives me 53% duty cycle. Is there something I'm missing? Which one is correct? Is it more likely that I am maxed out with ID1000 cc injectors or is 53% duty cycle a more likely number?

Which option is correct when selecting to view duty cycle on the fuel trim map? I would assume the sequential 4 cylinder option would be right. This gives me a max 53% duty cycle according to my pulse width map. I suppose I could add a bunch of fuel up top and see if it richens up or if it stays the same and I would have my answer, but I'd rather not.

I've been searching for an answer since last night. Thanks for any help.
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Old 11-19-2012, 11:28 AM   #2
05_wRex
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OBP

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Must have been one stupid question...lol.
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Old 11-19-2012, 02:12 PM   #3
TheBoz
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Your map is more than likley setup on boost compensation.

If you look at this template:
Fuel -> << Advanced Fuel >> -> Fuel Trims -> Fuel Trims

Boost Fuel Correct table will be 0 for non boost comp or -100 to 280+ depending on your map sensor for boost comp.

The duty cycle view is not really a good view to use, you should really look in raw, the raw number should will never go past 255, so if your raw number is close to 255 you need to adjust your msec/bit.
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Old 11-19-2012, 02:15 PM   #4
TheBoz
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Also if you data log is showing your IDC at more than 100% that is bad on an AEM, you want your max IDC on an AEM around the 90-95% range max.

To view Duty Cycle, you click
Menu -> View Duty Cycle -> 1/2(e.g. sequential 4 cylinder 4 stroke), click ok

For my GVR4 at 680whp at 35psi@9000rpm my Duty Cycle in the Fuel map is 34.8, so if you are on boost comp the duty cycle map is not helpful at all.

Last edited by TheBoz; 11-19-2012 at 02:22 PM.
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Old 11-20-2012, 08:24 PM   #5
Kyle_J
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WRB

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FWIW I have ID1000's at 53% IDC on a gt30r @25psi on 93 and meth.
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Old 11-27-2012, 04:30 PM   #6
aftabulis
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How do you like the AEM?
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Old 11-27-2012, 04:39 PM   #7
05_wRex
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2007 WRX STi PTE6266
OBP

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Quote:
Originally Posted by Kyle_J
FWIW I have ID1000's at 53% IDC on a gt30r @25psi on 93 and meth.
On the aem duty cycle map? That's what mine says also. Raw is 218 or something like that though.
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Old 11-27-2012, 04:43 PM   #8
05_wRex
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Location: Chattanooga, TN
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2007 WRX STi PTE6266
OBP

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Quote:
Originally Posted by aftabulis
How do you like the AEM?
I like all the features. I don't like the low rpm cam sync issue. That's what AMS called it...so idk. Lol. I also don't like how long it takes to start the car. I "have" to wait several seconds to let the aem "get ready" I guess...or it will act up and freak out. AMS also said this was normal. Considering putting the stock ecu with accessport back on it and see if it clears up drive ability.
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Old 12-30-2012, 01:11 PM   #9
Weiss
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AEM series 2 cuts down on start up time. Also the delay is the AEM going over all the safty to make sure everything is in sync before starting. I person rather wait a few seconds then start up and have a issue. Either way you need to wait for it to warm up.
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Old 12-30-2012, 01:15 PM   #10
05_wRex
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Location: Chattanooga, TN
Vehicle:
2007 WRX STi PTE6266
OBP

Default

Quote:
Originally Posted by Weiss View Post
AEM series 2 cuts down on start up time. Also the delay is the AEM going over all the safty to make sure everything is in sync before starting. I person rather wait a few seconds then start up and have a issue. Either way you need to wait for it to warm up.
You wouldn't happen to know how to restore aems factory etc (electronic throttle control)(drive by wire throttle) calibration, would you? I've tried 100 times since yesterday to calibrate the electronic throttle control via the cruise control only to get the same error. It is stuck in calibration mode and will not exit until it completes the calibration successfully. All voltage has been verified by me with a volt meter several times. The stock ecu works just fine. I can't run the car on the stock ecu though since I don't have an accessport anymore.

Thanks.
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Old 12-30-2012, 02:25 PM   #11
Weiss
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No sorry I have dbc
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