Terminal Velocity II or DFO
Thread Starter
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Cruiser
Joined: Feb 2006
Posts: 192
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From:
Terminal Velocity II or DFO
I am considering using either DFO or Terminal Velocity II on my 06 Dyna.
If I use the Terminal Velocity II it seems that I would not need any other system on my EFI and it would essentially make my system a WEGO system. Is this true. Do I have to do anything else on the 06 Dyna EFI system to use the TVII system as my Fuel managment system for Stage 1?
I am hearing more an dmore people saying use DFO instead of SERT, PCIII or V&H. That is is cheaper and works better. Any opinions?
Thanks.
If I use the Terminal Velocity II it seems that I would not need any other system on my EFI and it would essentially make my system a WEGO system. Is this true. Do I have to do anything else on the 06 Dyna EFI system to use the TVII system as my Fuel managment system for Stage 1?
I am hearing more an dmore people saying use DFO instead of SERT, PCIII or V&H. That is is cheaper and works better. Any opinions?
Thanks.
Road Master
Joined: Dec 2005
Posts: 1,224
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RE: Terminal Velocity II or DFO
The new style wide band WEGO FI systems are the best option above all of them including tuning with the SERT or aftermarket enrichner.
Keep an eye out for the Daytona sensors dual o2 kit and I believe thundermax will have another one out this spring. These things are so advanced it's not funny.
The opinions you are reading on the TFI, DFO are almost worthless on the closed loop systems. The TFI 'aint so bad when adding fuel to the acceleration mode for a jump in performance but tuning the cruise mode is a compromise at best; problem is that you are trying to 'fix' a bad base map especially on the 06 bikes. I've run 'em both and can say that with a straight face. As a tuning tool (on the factory closed loop ECU) for a modified bike or even a bone stocker, the SERT is the best end of story.
If I weren't scared about screwing my warranty, I'd be all over one of the twin sensor WEGO systems so fast it's not funny.
Keep an eye out for the Daytona sensors dual o2 kit and I believe thundermax will have another one out this spring. These things are so advanced it's not funny.
The opinions you are reading on the TFI, DFO are almost worthless on the closed loop systems. The TFI 'aint so bad when adding fuel to the acceleration mode for a jump in performance but tuning the cruise mode is a compromise at best; problem is that you are trying to 'fix' a bad base map especially on the 06 bikes. I've run 'em both and can say that with a straight face. As a tuning tool (on the factory closed loop ECU) for a modified bike or even a bone stocker, the SERT is the best end of story.
If I weren't scared about screwing my warranty, I'd be all over one of the twin sensor WEGO systems so fast it's not funny.
Cruiser
Joined: Apr 2006
Posts: 116
Likes: 1
RE: Terminal Velocity II or DFO
I wish i knew the answer to that to i want to do the same things, my friend bought a teriminal velocity for his 06 springer but havent installed it yet, it must have 20 wires hanging out of it and most of them are cut like he took one for something else modified it and put his stickers on it
Tourer
Joined: Apr 2006
Posts: 293
Likes: 58
From: Loganville, PA
RE: Terminal Velocity II or DFO
It thought the terminal velocity was supposed to use the 02 sensors more than the stock ECU.
The softail will need 02 sensors installed.
Stucarious, I'm right there with you man. I'm going to pick either the DFO or TVII.
I don't want to pay someone to do this. I'm leaning more towards the TVII. I believe using
the 02 sensors is the way to go. I'm only planning on stage 1 for my bike.
The softail will need 02 sensors installed.
Stucarious, I'm right there with you man. I'm going to pick either the DFO or TVII.
I don't want to pay someone to do this. I'm leaning more towards the TVII. I believe using
the 02 sensors is the way to go. I'm only planning on stage 1 for my bike.
Thread Starter
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Cruiser
Joined: Feb 2006
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RE: Terminal Velocity II or DFO
ORIGINAL: rrhemi
Stucarious, I'm right there with you man. I'm going to pick either the DFO or TVII.
I don't want to pay someone to do this. I'm leaning more towards the TVII. I believe using
the 02 sensors is the way to go. I'm only planning on stage 1 for my bike.
Stucarious, I'm right there with you man. I'm going to pick either the DFO or TVII.
I don't want to pay someone to do this. I'm leaning more towards the TVII. I believe using
the 02 sensors is the way to go. I'm only planning on stage 1 for my bike.
I do not understand why everyone is not doing this. That is the biggest hesitation I have. Is there something I am missing or is it just that since it is so new to have HD closed loop systems people have been making the wrong choice by just going with older systems for open loop?
Since I am getting Bassani pipes with a bung I might as well take advantage of the O2. It is a better system after all.
Tourer
Joined: Apr 2006
Posts: 293
Likes: 58
From: Loganville, PA
RE: Terminal Velocity II or DFO
I agree. One downside to the TVII is that you have to wire it into existing harness.
I don't like this idea but if it works as advertised.....
You won't be able to up the rev limiter either.
Since only the Dyna has 02 sensors the knowledge about these is probably
lagging. I am also concerned about getting failure codes and blinking lights in ECU.
Don't need a light show.
A while back some guys on here were getting a sample piece
from Terry but they did not report after installation. In the same thread there were a
couple of other dudes that reported that it seemed to work as advertised. I would also
like to know how the plugs look after usage.
I don't like this idea but if it works as advertised.....
You won't be able to up the rev limiter either.
Since only the Dyna has 02 sensors the knowledge about these is probably
lagging. I am also concerned about getting failure codes and blinking lights in ECU.
Don't need a light show.
A while back some guys on here were getting a sample piece
from Terry but they did not report after installation. In the same thread there were a
couple of other dudes that reported that it seemed to work as advertised. I would also
like to know how the plugs look after usage.
Thread Starter
|
Cruiser
Joined: Feb 2006
Posts: 192
Likes: 0
From:
RE: Terminal Velocity II or DFO
ORIGINAL: rrhemi
I agree. One downside to the TVII is that you have to wire it into existing harness.
I don't like this idea but if it works as advertised.....
You won't be able to up the rev limiter either.
Since only the Dyna has 02 sensors the knowledge about these is probably
lagging. I am also concerned about getting failure codes and blinking lights in ECU.
Don't need a light show.
A while back some guys on here were getting a sample piece
from Terry but they did not report after installation. In the same thread there were a
couple of other dudes that reported that it seemed to work as advertised. I would also
like to know how the plugs look after usage.
I agree. One downside to the TVII is that you have to wire it into existing harness.
I don't like this idea but if it works as advertised.....
You won't be able to up the rev limiter either.
Since only the Dyna has 02 sensors the knowledge about these is probably
lagging. I am also concerned about getting failure codes and blinking lights in ECU.
Don't need a light show.
A while back some guys on here were getting a sample piece
from Terry but they did not report after installation. In the same thread there were a
couple of other dudes that reported that it seemed to work as advertised. I would also
like to know how the plugs look after usage.
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Tourer
Joined: Apr 2006
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From: Loganville, PA
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Tourer
Joined: Apr 2006
Posts: 293
Likes: 58
From: Loganville, PA
RE: Terminal Velocity II or DFO
Sorry to cloud the waters even more but, check this out: http://www.daytona-twintec.com/TCFI.html
Make sure you read the FAQ's
This ecu supposedly works like the TVII but it replaces your current module so you don't have to
splice in wires. $695!!!!!!!!!!!!
I sent them an e-mail to see if it is cheaper for Dyna since you don't need the 02 sensors.
Make sure you read the FAQ's
This ecu supposedly works like the TVII but it replaces your current module so you don't have to
splice in wires. $695!!!!!!!!!!!!
I sent them an e-mail to see if it is cheaper for Dyna since you don't need the 02 sensors.
Tourer
Joined: Apr 2006
Posts: 293
Likes: 58
From: Loganville, PA