Revhead Kev
Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6004
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Re: "Piggy Back" ECU
The Interceptor is not listed as being tested on a Spec-V so do you think it will work easily with the Xtrail or are you a guinea-pig ?
--- Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
My Blog
My CarPC Worklog |
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27/Jul/2007, 10:39 pm
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Re: "Piggy Back" ECU
Kev,
I have been in contact with the Haltech guys before (about the same time last year) and they were very close to releasing the Interceptor version for the QR25DE engine, so am not sure if they did that already but AutoTech said it's compatible and available.
I also have the option to use the UNICHIP and this is the one I'm leaning towards using at the moment.
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27/Jul/2007, 11:05 pm
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Re: "Piggy Back" ECU
quote:
BRETT72 wrote:
Dollar vs dollar, would the Apexi unit do the trick for us guys with non HiTech systems. A little more power is always nice.
Brett, you first need to establish your existing fuel:air ratio and timing to be able to tell if your exy is running rich or far too rich before doing this mod, chances are that your ECU has already adjusted itself to the optimum setting with just a cat back, K&N filter and iridium plugs, so adding the Apexi won't achieve much gain, if you calculate how much this mod will cost you.
In your case, the calculation will be based on Power Gain Vs. Dollar Value.
Based on your recent FC figures, I don't think your exy is running rich and your settings are all good.
Dan: The statement on the unichip website applies if I decide to do further engine mods, in which case the unichip will need to be re-tuned again and it also applies if I use lesser quality fuel, but I am planning to have my exy dyno tuned based on the 98 octane fuel which I am using, so I don't see a problem with fuel pressure drop happening.
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28/Jul/2007, 11:43 am
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Re: "Piggy Back" ECU
Rich,
Lets shift this discussion about the dyno mode to an existing thread HERE You have previously raised exactly the same question and we have discussed there and another thread.
I would like to keep this thread for the ECU piggy back only.
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28/Jul/2007, 11:59 am
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Re: "Piggy Back" ECU
Kev,
To do that you will need to buy a wideband O2 sensor and have the application and software on your laptop and re-tune the exy to suit the driving conditions, but am not sure how practical that will be to implement, as your car should be tuned to perform to its best in one condition or the other. I don't think you can have the best of both worlds with this.
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28/Jul/2007, 12:43 pm
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This is the way I dynoed my exy before starting from 4WD mode which changed to AUTO and I believe it is not only front wheels.
