Revhead Kev
Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 5758
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Re: "Piggy Back" ECU
quote:
jalalski wrote:
The principal of having a piggy back connected to the factory ECU is to fool the ECU by sending commands to it through the Haltech piggyback and only for specific paramaters (example: fuel maps, ignition timing..etc) When the factory ECU is re-set, it will only re-set the rest of the codes and not the ones being controlled by the Haltech.
Understand this Jalal, so maybe I did not explain myself correctly.
Did you have the ECU reset done before the piggy-back was fitted ?
Reason I ask is that if the ECU had adjusted some settings already, then the piggy-back tuning would be optimised for these bad settings and when the dealer does an ECU reset, the piggy-back settings would not be tuned for the now better default ECU settings.
--- Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
My Blog
My CarPC Worklog |
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6/Sep/2007, 8:03 pm
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Re: "Piggy Back" ECU
Kev,
The ECU re-set was done prior to tuning the Haltech.
No matter what settings are in the ECU in regards to the parameters controlled by the Haltech, the tuning of this piggy back is done stand-alone and not through the factory ECU OBDII connector, so the settings which have been pushed out to the Haltech piggy back will override any other setting in the ECU for the parameters in question.
Another ECU re-set will not impact or change the Haltech settings, as it has its own maps.
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6/Sep/2007, 8:15 pm
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Re: "Piggy Back" ECU
quote:
Revhead Kev wrote:
So what's with the new signature then ???
I said, it's not a "sports" car but it can race within limits 
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6/Sep/2007, 8:44 pm
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Re: "Piggy Back" ECU
Hi Guys,
I am pleased to let you know that I finished my fuel consumption testing after fitting the piggy back ECU and with the increased power, the FC remained at 12LT/100kms consistently over 4 fuel tanks and with me driving it really hard each tank, this has started to change and the 5th tank gave me a reading of 11.5LT/100kms which is even better.
There is no soot (black carbon deposits) to be seen on the tail pipes, so this ECU is definitely doing its job in correcting the fuel:air ratios, giving extra power and stabilizing fuel economy.
I'm pretty happy with the results and will test it even more when I hit the highway during X-mas.
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15/Oct/2007, 2:42 pm
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Re: "Piggy Back" ECU
Hi Guys,
It was the first time I tested the full potential of the piggy back ECU on long runs and during my recent trip to the Gold Coast and back, I was amazed by the difference in power the piggy back gave me and all that with saving on fuel as well. WOW!!!! 
The exy performed exceptionally well both ways (a total of 27 hours driving). Hill climbs were not a problem for the exy at all.
Even a V6 Tribute couldn't keep up with me, so my brother in law got a bit angry and said "am not following you, cause you're too hard to catch" hahahahaha
I have all the fuel receipts with me and will be updating the fuel consumption monitor tomorrow with the figures. The best fuel tank I had was about 530kms
I am very happy with the piggy back ECU and what it did to the exy.
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3/Jan/2008, 9:15 pm
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NissanTaylor
X-TRAIL ENTHUSIAST
Date Registered: 06-2008
Location: Canberra, ACT
TOTAL POSTS: 244
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Re: "Piggy Back" ECU
Hey Jalal,
Just wondering about 8 months down the track how the haltech is goin? Have you had to have a re-tune or a check up to see its still 'bang on'?
---
X-897
My Old Platium 07 STS Xtreme - Click Here to check out my mods and pics
Now own a Black C34 Nissan Stagea RS4-S |
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29/Jun/2008, 8:19 pm
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Re: "Piggy Back" ECU
Hi Taylor,
It's still going perfectly well and my "butt dyno" tells me that the power increase is exactly the same as day one when I installed it. Will get it checked after 12 months, as this was the recommended tuning check-up when I had it installed.
The only downside since I have fitted the piggy back ECU is the lack of 98 fuel in the country and I can't run with anything less than 98. 
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29/Jun/2008, 8:46 pm
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NissanTaylor
X-TRAIL ENTHUSIAST
Date Registered: 06-2008
Location: Canberra, ACT
TOTAL POSTS: 244
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Re: "Piggy Back" ECU
Yeah true, 98 is getting costly and hard to come by. Does the haltech unit control the base timing etc? does that mean that if haltech is installed can you then use Consult II/III to bump the advance to 17deg BTDC?
---
X-897
My Old Platium 07 STS Xtreme - Click Here to check out my mods and pics
Now own a Black C34 Nissan Stagea RS4-S |
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29/Jun/2008, 9:02 pm
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Re: "Piggy Back" ECU
Timing will be fully controlled by the Haltech and it will change depending on the rev range you're in. Advancing the timing on the ECU will achieve nothing when you have the Haltech connected and taking over this role.
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29/Jun/2008, 9:18 pm
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