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hiimkam Profile
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Date Registered: 11-2008
Location: Perth
TOTAL POSTS: 414
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Re: "Piggy Back" ECU


Yeh i couldnt imagine anything to do with ecu wiring could be described as easy!
considering our ecu is self adapting, how does that affect the installation of a piggyback?

cos i'd imagine when it comes time to install the unit, youd have to disconnect the battery for wiring/soldering, thus reseting the computer...
what happens in terms of maps/settings when the ecu adapts after the initial install and tune?

starting to get excited about all this!

jalal, whats you opinion of the switchable fuel maps of the GReddy?
would there be much difference between the power one and the economy one?
in theory it would be great! but i just have no idea if its a complete gimmick or if theres any merit to the idea...

also, where is your unit located?
cos i read somwhere that the miniceptor isnt weather proof, so where is yours in the cabin?

Cam.

---
GT2860rs, Ems stinger, tial external gate, 3" exhaust, 10psi and ~200kw @ all fours. Koya drifteks w/245/50 rubber, 70mm lowered springs, slotted rotors and painted calipers :)
20/Feb/2009, 7:42 pm Link to this post Send Email PM   Send Private Message MSN
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29088
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Re: "Piggy Back" ECU


quote:

hiimkam wrote:
considering our ecu is self adapting, how does that affect the installation of a piggyback?



As explained in this thread, the piggy back fools the factory ECU by pushing its own maps, the wires of the ECU for certain functions will be routed through the piggyback to take control of these parameters, so whatever the ECU does in terms of self rest and self learn will not change these values and will have no effect on them.

quote:

jalal, whats you opinion of the switchable fuel maps of the GReddy?
would there be much difference between the power one and the economy one?



To be honest I keep scratching my head about this one cause am not sure what the economy mode will be used for, I never felt the need to run my exy with less power that it currently has and I doubt the economy mode will allow you to fill up with cheaper petrol than the premium 98 that you will end-up living with.

quote:

also, where is your unit located?
cos i read somwhere that the miniceptor isnt weather proof, so where is yours in the cabin?



Yes, the Haltech is safely inside the cabin behind the plastic trim in the passenger foot-well with a PC terminal connection safely located in the glovebox.



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20/Feb/2009, 10:42 pm Link to this post Send Private Message MSN Blog
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 5410
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Re: "Piggy Back" ECU


quote:

jalalski wrote:

quote:

hiimkam wrote:
jalal, whats you opinion of the switchable fuel maps of the GReddy?
would there be much difference between the power one and the economy one?



To be honest I keep scratching my head about this one cause am not sure what the economy mode will be used for, I never felt the need to run my exy with less power that it currently has and I doubt the economy mode will allow you to fill up with cheaper petrol than the premium 98 that you will end-up living with.



Cam, what I was considering was having one map set for max power (on the road) and one map set for max torque (off-road) but never dived into the feasability of it.

The Haltech Platinum Interceptor (Miniceptor replacement) I have actually has the function for two maps and Spiro who did the tuning said he could use the second map to optimise the running on LPG if I installed it later.

---
Kev X450(c) T30 Guru
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24/Feb/2009, 1:58 pm Link to this post Send Email PM   Send Private Message Blog
 
hiimkam Profile
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Date Registered: 11-2008
Location: Perth
TOTAL POSTS: 414
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Re: "Piggy Back" ECU


hey guys.

just wondering...
is there any danger of running with a slightly too rich air:fuel ratio?
im not gonna blow anything up or fry anything since ive got the full exhaust and the intake am i?
the only thing i can think of is that its dangerous to my wallet emoticon

i know there is danger of having too leaner mixtures, but is there any risk with the other side of things?

and also, why does the air:fuel mixtures suddenly become too rich with intake or exhaust mods?

thanks.

cam.

---
GT2860rs, Ems stinger, tial external gate, 3" exhaust, 10psi and ~200kw @ all fours. Koya drifteks w/245/50 rubber, 70mm lowered springs, slotted rotors and painted calipers :)
13/Mar/2009, 9:59 pm Link to this post Send Email PM   Send Private Message MSN
 
Robbo0001 Profile
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Date Registered: 07-2008
Location: Brisvegas, Australia
TOTAL POSTS: 1063
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Re: "Piggy Back" ECU


I have approached 2 performance places in Brisvegas in the last month or so, in relation to what they could do with the Nissan QR25 ECU after the extractors/ intake are modified.

Both replied that the E-Manage was a better option than G-Reddy (dont belive the economy/ power map settings work with the Nissan ECU)

However, I can understand that having unburnt fuel (or fuel still burning)in the exhaust system can lead to bad things, and that is the problem with rich fuel mixture.
Too lean, no power. Too rich, wasted power in the form of fuel burning in the exhaust sytem.

I understand this (my novice interpretation) is caused by a larger than stock intake, a larger than stock set of extractors.....and a factory O2 sensor trying to set ECU parametres that are beyond its limits.

Ie ECU THINKS.....to much oxygen because of more air from CAI/ Extractors (sensed at O2 sensor)....must be running lean....put in more full...run rich in reality

also...
One said to wait until all mods are done and see what happpens, apart from running rich and burning more fuel (with the standard Cat gone is this bad apart from the wallet?)...
And I was also told that QUOTE there are some awesome diesel XTrail maps coming out let people know ENDQUOTE
If anyone with a T31 diesel is reading this thread....I would start asking around if you were interested.

Exact details are beyond me....cos I switched off when he started talking about diesels emoticon

---
Dave
99 GU Patrol 2.8TD
Ex-2002 T30 TI Xtrail
14/Mar/2009, 1:14 am Link to this post Send Email PM   Send Private Message
 
Eggins Profile
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Date Registered: 08-2004
Location: Brisbane
TOTAL POSTS: 184
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Re: "Piggy Back" ECU


Too rich can wash the bore, which doesn't leave enough of an oil film for the rings and piston. This would lead to scoring, or at lease accelerated wear.
But I'm not sure what exact level of fuel air ratio you'd call so rich to provide that effect. I gather that the Nissans are a bit rich normally and that doesn't seem to be a big issue by itself (except where the cat converter gets wrecked)


---
Shawn and Belinda Eggins
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14/Mar/2009, 7:32 am Link to this post Send Email PM   Send Private Message
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29088
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Re: "Piggy Back" ECU


Cam,

Fitting a full exhaust system by itself won't cause your car to run rich as the factory ECU and O2 sensor can still handle it fine. However fitting a CAI or larger intake will cause it to run far too rich due to increased air intake as explained above. This when the factory ECU won't be able to handle the air ratio and stuffs-up the fuel ratio at the same time.

As Shawn said, Nissan sets all of their cars to run a bit rich right from the factory to avoid any possible warranty claims to do with pinging, so there is a bit of room there to have it run lean without the need for the piggy back. This is only applicable for stock standard engines with no modifications.

---

14/Mar/2009, 7:47 am Link to this post Send Private Message MSN Blog
 
hiimkam Profile
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Date Registered: 11-2008
Location: Perth
TOTAL POSTS: 414
Reply | QUOTE
Re: "Piggy Back" ECU


quote:

Both replied that the E-Manage was a better option than G-Reddy



Dave, the E-Manage is made by GReddy...

im getting the e-manage installed and tuned first (as opposed to getting the clutch and flywheel done). i figured my wallet could do with a break...
but now i think of it, my economy hasnt actually been THAT bad!
ive been averaging 10-11L/100km and ive never had a tank worse than like 11.2 i figured out.
keep in mind i havnt been driving like a nanna...
so i guess it cant be THAT bad of a problem. if my air fuel ratio was off enough to cause serious problems, itd be noticeable in my economy...

---
GT2860rs, Ems stinger, tial external gate, 3" exhaust, 10psi and ~200kw @ all fours. Koya drifteks w/245/50 rubber, 70mm lowered springs, slotted rotors and painted calipers :)
14/Mar/2009, 11:04 am Link to this post Send Email PM   Send Private Message MSN
 
Robbo0001 Profile
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Date Registered: 07-2008
Location: Brisvegas, Australia
TOTAL POSTS: 1063
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Re: "Piggy Back" ECU


Doh....gotta ignore spelling and recheck the content from now on emoticon

replace E-manage with Haltech....nice pick up emoticon

---
Dave
99 GU Patrol 2.8TD
Ex-2002 T30 TI Xtrail
14/Mar/2009, 11:19 am Link to this post Send Email PM   Send Private Message
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29088
Reply | QUOTE
Re: "Piggy Back" ECU


Cam,

I wasn't concerned about fuel economy when I installed the Haltech, the car was running rich period. You can tell from the black soot deposit on the exhaust tip. As soon as I fitted the CAI, it was black all the time. As soon as I fitted the Haltech, it was gone.

---

14/Mar/2009, 1:16 pm Link to this post Send Private Message MSN Blog
 


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