|
Author
|
Topic: Pic of my Dyno Graph...Ideas?
|
2stangs69-91
¯
Member # 1951
|
posted
 
 
why would you all the sudden need more power at 5900 rpms is the funny thing. You have so much going on with your setup it would be hard to guess. What do you have set up for rev limiting?
Does it crap out at the same rpm in every gear? it would be nice if 93pony had igniton scope so you could check out your spark lines and timming changes for each cyl when it is cutting out. I have seen rfi isues mess up spark control.
Good luck.. the bandaid kid
--------------------
69 Mustang on hold
1991 LX hatch getting a make over
1994 F150 4X4 351
2006 Yamaha V-max 1200 Modded
Posts: 3711 | From: Redding | Registered: Oct 2002
| :
|
|
93PONY
Mr. Valve Events
Member # 60
|
posted
Reviewed the datalogs from the dyno....
As far as the computer sees things, there's nothing going wrong with any sensors or timing control. I don't think it's a computer issues. The datalogger does not have the capability to log electical system volts so I can not rule out the possiblility of running out of juice at high RPM.
--------------------
www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4265 | From: Fair Oaks, CA | Registered: Nov 2000
| :
|
|
CDT
¯
Member # 5004
|
posted
I would think if it was voltage, you should see a climb in pulsewidth.
--------------------
Custom Dyno Tuning
510.331.0608
Home of Flat Fee Tuning For All Cars, Trucks and SUV's, EFI & Carb, SCT, AFR, Dynatech, STS Turbos, N2O Refills
Posts: 1053 | From: Hayward | Registered: Nov 2004
| :
|
|
93PONY
Mr. Valve Events
Member # 60
|
posted
quote:
Originally posted by CDT:
I would think if it was voltage, you should see a climb in pulsewidth.
As RPM's go up injector Pulsewidth increases anyway....so how can you tell?
--------------------
www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4265 | From: Fair Oaks, CA | Registered: Nov 2000
| :
|
|
2stangs69-91
¯
Member # 1951
|
posted
computers ground the injectors anyhow. If you lost enough voltage to shut down the injectors it would show up for sure(since it is a constant battery voltage).. It is obviously not a comman thing or it would have been found already. I would run it on the dyno with a fuel pressure gauge a scope and a vacuum gauge all sitting in front of me whan it was missing. Maybe a 4 gass analizer also. Rule out all the spark and fuel functions then go for mechanical. JMO
[ April 28, 2006, 01:17 AM: Message edited by: 2stangs69-91 ]
--------------------
69 Mustang on hold
1991 LX hatch getting a make over
1994 F150 4X4 351
2006 Yamaha V-max 1200 Modded
Posts: 3711 | From: Redding | Registered: Oct 2002
| :
|
|
CDT
¯
Member # 5004
|
posted
quote:
Originally posted by 93PONY:
quote:
Originally posted by CDT:
I would think if it was voltage, you should see a climb in pulsewidth.
As RPM's go up injector Pulsewidth increases anyway....so how can you tell?
usually you will see it go higher than planned, due to the fuel pump slowing down. but you should also see it in the A/F Its hard for me to tell in the graph because the dynojet smooths it so much. You will usually see it dip rich then go lean. Also the run may go by too quick to get enough data without load.
--------------------
Custom Dyno Tuning
510.331.0608
Home of Flat Fee Tuning For All Cars, Trucks and SUV's, EFI & Carb, SCT, AFR, Dynatech, STS Turbos, N2O Refills
Posts: 1053 | From: Hayward | Registered: Nov 2004
| :
|
|
|
Email this post to someone!
Printer friendly view of this Ford topic
