Unichip

[ktford]

Do you have acess to a WDS to check fault codes.

Yes we do. :lol:

Peter

APS

Peter,

would a service manager tell you if they find a fault code?

Scotty CCC

[SR-71 Blackbird]

SR71, regarding that thread you mentioned initially, I read it and all I can say is that the technical information presented is just plain wrong in relation to the Unichip – even more so on an XR6T.

Regarding your other questions:

1. The DTE function relies on injector duty cycle. Any mod to fuel flow or fuel pressure will cause a variance. Similarly, as the fuel pressure drops with age, DTE will change also.

2. Yes, Unichip senses boost pressure and precisely maps EFI parameters for increased boost pressure.

3. Unichip does not affect the Ford knock sensor circuit operation.

In any case, your questions apply equally to any engine management system. Perhaps you should ask the same of others instead of targeting APS. In addition, it would be more productive for all forum members if you kept your questions specific to the XR6T.

Peter

APS

I was interested in purchasing a unichipUnichip but was concerned with the technical article I have put forward that you have dismissed as journalism. They are from two independent tuners and list the shortfalls with the Unichip engine management. As you implied this forum is to ask experienced people and peoples experience with the vehicle. You have consistently said it best to leave it to the experienced tuners but when asked about some shortfalls of a unit stated by tuners you say the tuners are wrong but give no reasons. It is my wish to make an informed purchase and that is why I have asked these questions. If I was looking for another engine management system I would ask them the same questions. You say the Unichip is far superior to any engine management but have not stated the reasons only to say the interface software is far superior as it is simplistic. We are all seeking wisdom from those in the know. I am not trying to discredit the Unichip just trying to verify the truth and myth about the unit. I am sure you guys just didn't go lets put 2 bar of boost on the engine and see how long it will last and researched the capabilities and limits of motor. I was more than happy to see APS had stated and probably researched, calculated and then tested the limit of the injectors. I don't believe it was trial and error. I also believe not everyone on this forum is willing to pay the money without first getting feedback from the supplier.

[aps]

Peter im a little confused.

I attended the C&V day in Sydney recently, and asked the very question to the presenter (sorry, his name slips my mind), "Will the Ford computer register any error codes after the Unichip has been removed from the vehicle?"

And the presenter said "Yes, the computer will have registered a overboost error code, but no others"

I am referring to the Plug in module that was installed in the Merc Silver XR6T, rego ZADANK.

Please clarify.  Thanks!

ms700, Yes you are correct that is what David stated on the day, and I remember thinking at the time, that was an error on David's behalf.

I was going to clarify/correct that statement later on the day though unfortunatly I forgot, sorry if this has caused any confusion.

The Fitment of the Unichip computer will not cause an over boost fault code to be logged in the Ford PCM.

I trust this clarifies the issue and again my apologies for the confusion.

Peter

APS

[aps]

Do you have acess to a WDS to check fault codes.

Yes we do. :lol:

Peter

APS

Peter,

would a service manager tell you if they find a fault code?

Scotty CCC

Scotty, I assume you are referring to a Ford service manager, is this correct?

Good question and I dont know the answer to that, I do know that we check every xr6t that APS works on and that the Unichip computer does not cause a over boost fault code.

That's not to say that the xr6t wont ever develop a fault code into the future, I can only tell you what I know from our 18 months of experience working on the T. We never stop learning.

Peter

APS

Edited 30/04/04 09:43 AM by aps

[SR-71 Blackbird]

SR71, regarding that thread you mentioned initially, I read it and all I can say is that the technical information presented is just plain wrong in relation to the Unichip – even more so on an XR6T.

Regarding your other questions:

1. The DTE function relies on injector duty cycle. Any mod to fuel flow or fuel pressure will cause a variance. Similarly, as the fuel pressure drops with age, DTE will change also.

2. Yes, Unichip senses boost pressure and precisely maps EFI parameters for increased boost pressure.

3. Unichip does not affect the Ford knock sensor circuit operation.

In any case, your questions apply equally to any engine management system. Perhaps you should ask the same of others instead of targeting APS. In addition, it would be more productive for all forum members if you kept your questions specific to the XR6T.

Peter

APS

I refer to the ignition map which I believe the Unichip to change. Usually the feedback of the knock sensor will retard timing and a multitude of other changes to stop detonation. With the Unichip controlling outputs to ancillaries how does the knock circuit then adjust engine behaviour accordingly?

[SR-71 Blackbird]

Peter im a little confused.

I attended the C&V day in Sydney recently, and asked the very question to the presenter (sorry, his name slips my mind), "Will the Ford computer register any error codes after the Unichip has been removed from the vehicle?"

And the presenter said "Yes, the computer will have registered a overboost error code, but no others"

I am referring to the Plug in module that was installed in the Merc Silver XR6T, rego ZADANK.

Please clarify.  Thanks!

ms700, Yes you are correct that is what David stated on the day, and I remember thinking at the time, that was an error on David's behalf.

I was going to clarify/correct that statement later on the day though unfortunatly I forgot, sorry if this has caused any confusion.

The Fitment of the Unichip computer will not cause an over boost fault code to be logged in the Ford PCM.

I trust this clarifies the issue and again my apologies for the confusion.

Peter

APS

On this thread you explain clearly that it does?

http://www.fordxr6turbo.com/forum/index.ph...t=0entry81082

[SR-71 Blackbird]

Is this true of the Unichips Crank angle replication?

Crank Angle Sensor (CAS) Replication

Compared to the Unichip, the XEDE is capable of vastly superior CAS replication. This ability greatly improves active knock correction performance, general drivability and invisibility to the factory diagnostic system. Perfect CAS replication insures that there is absolutely no misunderstandings between the factory ECU and the XEDE.

Edited 30/04/04 10:07 AM by SR-71 Blackbird

[SR-71 Blackbird]

Unlike the Unichip which is capable of modifying only Ignition Timing and MAF signals with fixed load (MAP) and RPM) breakpoints (every 500RPM, the XEDE is capable of modifying Ignition Timing, MAF, TPS, MAP and Knock sensor signals with respect to RPM (up to 20 user-definable breakpoints) and any one of three Load variables (MAP, TPS or MAF).

Is this true or myth?

Edited 30/04/04 10:09 AM by SR-71 Blackbird

[TURBO4LT]

Hi blackbird

I wouldnt worry about the overboost code mine would do this when it was standard, ocasionally it would peak to 10psi and then go into dumb mode. The dealer kept saying they couldnt fault it, just that it was showing over boost and they wernt to concerned.

If you are thinking of getting a unichip I cant fault it on my car its the same as standard to drive until you floor it.

I read those articles you mentioned before I had my mods done, and I also read negative material on the other intercepter. At the end of the day you need to do more reading from independant people and maybe go for a drive in a unichip car, xede and tsi and make your own mind up. Im sure there are guys on the forum that will be more than happy to take you for a spin as I am.

Cheers

Frank

[aps]

SR-71 Blackbird, Any more Questions, fire away. :lol:

Peter

APS