Vortech with Vs. without VAFC controller?
02-12-2003, 05:03 PM
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Vortech with Vs. without VAFC controller?
Curious on opinions from those who have installed a Vortech:
How well tuned was it without a VAFC?
If you added a VAFC after running without a VAFC, how did it affect performance? Did you notice improvement anywhere but on a dyno?
How well tuned was it without a VAFC?
If you added a VAFC after running without a VAFC, how did it affect performance? Did you notice improvement anywhere but on a dyno?
02-12-2003, 05:12 PM
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Originally posted by pfb
Curious on opinions from those who have installed a Vortech:
How well tuned was it without a VAFC?
If you added a VAFC after running without a VAFC, how did it affect performance? Did you notice improvement anywhere but on a dyno?
Curious on opinions from those who have installed a Vortech:
How well tuned was it without a VAFC?
If you added a VAFC after running without a VAFC, how did it affect performance? Did you notice improvement anywhere but on a dyno?
-YS
02-12-2003, 07:29 PM
#3
I've always wandered this....
What is a map controller? Why would you want one?
Does the VAFC use the map controller, or does the VAFC replace the map controller?
I only know that map is Manifold Absolute Pressure.
What is a map controller? Why would you want one?
Does the VAFC use the map controller, or does the VAFC replace the map controller?
I only know that map is Manifold Absolute Pressure.
02-12-2003, 07:31 PM
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Gains are well worth it. Since it is always best to dyno the new SC installation, you can kill two birds with one stone and install the VAFC at the same time to save money on dyno time.
Narrow throttle settings are not used on the VAFC because there is alot of talk on the board about how the ECU is dynamic and learns the new settings and adjusts the fuel accordingly, effectively negating the VAFC settings. This is different at WOT because the ECU goes into open loop (to non dynamic settings).
You will find that with NA applications it is necessary to lean out the mixture... good A/F ratio hovers around 14:1 area.
With FI applications it is necessary to RICHEN the mixture... good A/F ratio hovers around the 12.5:1 to 13:1 area.
Narrow throttle settings are not used on the VAFC because there is alot of talk on the board about how the ECU is dynamic and learns the new settings and adjusts the fuel accordingly, effectively negating the VAFC settings. This is different at WOT because the ECU goes into open loop (to non dynamic settings).
You will find that with NA applications it is necessary to lean out the mixture... good A/F ratio hovers around 14:1 area.
With FI applications it is necessary to RICHEN the mixture... good A/F ratio hovers around the 12.5:1 to 13:1 area.
02-12-2003, 07:41 PM
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Originally posted by exzeltus
I've always wandered this....
What is a map controller? Why would you want one?
Does the VAFC use the map controller, or does the VAFC replace the map controller?
I only know that map is Manifold Absolute Pressure.
I've always wandered this....
What is a map controller? Why would you want one?
Does the VAFC use the map controller, or does the VAFC replace the map controller?
I only know that map is Manifold Absolute Pressure.
I guess the MAP controller would be the VAFC itself (because it controls the signal going into the ECU). Or maybe I did not understand the question.
02-13-2003, 02:35 AM
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[QUOTE]Originally posted by RWD_RCKT
[B]
The VAFC modifies the MAP signal before it gets to the ECU... essentially tricking the ECU into thinking that it needs to add/subtract fuel.
I guess the MAP controller would be the VAFC itself (because it controls the signal going into the ECU).
[B]
The VAFC modifies the MAP signal before it gets to the ECU... essentially tricking the ECU into thinking that it needs to add/subtract fuel.
I guess the MAP controller would be the VAFC itself (because it controls the signal going into the ECU).
But the weight difference would help