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Old 20th November 2016, 06:57 PM   #1 (permalink)
Katsura is stage 4.25 in MY17
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Anyone Remapped the M17GTR Yet?

Wondering if anyone has done this yet? Or changed the exhaust?

Looking into this. May give Knight Racer a call after the first 1200 miles.
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Old 20th November 2016, 07:03 PM   #2 (permalink)
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Wondering if anyone has done this yet? Or changed the exhaust?

Looking into this. May give Knight Racer a call after the first 1200 miles.
I've just changed the Y pipe. I'm still in the running in period and to be honest it feels bloody fast even revving up through the gears to 3500rpm. Have you got used to the power already?
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Old 20th November 2016, 07:10 PM   #3 (permalink)
Katsura is stage 4.25 in MY17
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Still getting use to the power.

The two mods I would like to do are Exhaust and Remap.

I have been looking at GTC and IPE, but IPE only comes in stainless steel. I would prefer to have a Titanium one, but the IPE does sound bloody good!
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Old 20th November 2016, 07:55 PM   #4 (permalink)
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I would consider all the tuners before settling on just the one closest!
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Old 20th November 2016, 08:07 PM   #5 (permalink)
Katsura is stage 4.25 in MY17
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I would consider all the tuners before settling on just the one closest!
Is there any you would recommend me to look at?
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Old 20th November 2016, 08:11 PM   #6 (permalink)
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AC Speedtech are seriously good on all counts, just do a search on here for many positive feedback and by my own testimonial only recently.

Autotorque are also very highly recommended.

For me personally in terms of methodical, high quality and excellent communication is AC speedtech (disclaimer, I'm, not associated with AC in anyway)
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Old 20th November 2016, 08:43 PM   #7 (permalink)
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What would a simple remap and y-pipe push the power to roughly?
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Old 20th November 2016, 08:58 PM   #8 (permalink)
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590 ish although im not sure a remap on a warranted my17 is a good idea, Y pipe is safe so I understand from a warranty stand point.
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Old 20th November 2016, 09:11 PM   #9 (permalink)
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590 ish although im not sure a remap on a warranted my17 is a good idea, Y pipe is safe so I understand from a warranty stand point.
'Only' 20hp increase? Would have thought a remap would,bring about closer to double that
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Old 20th November 2016, 09:22 PM   #10 (permalink)
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Stage 1 is stage 1, it's only a 20-30bhp gain because the car is already running more boost than the older cars, so you are only raising a small amount of boost.
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Old 20th November 2016, 09:23 PM   #11 (permalink)
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Stage 1 is stage 1, it's only a 20-30bhp gain because the car is already running more boost than the older cars, so you are only raising a small amount of boost.
Thanks, may as well skip stage 1 in that case
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Old 20th November 2016, 09:53 PM   #12 (permalink)
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Is it worth possibly voiding warranty.... Personally I'd wait at least 12-18months before touching the map side of things... Y pipe is OK from what I've been told by dealerships
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Old 20th November 2016, 10:40 PM   #13 (permalink)
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Can people stop assuming that all tuners stage packages are the same. It's really easy for the stock engine to gain power by raising boost and the stock ecu does a great job of controlling det but there's much much more to a decent map than power figures alone. It's only if you drive two of the same power from different mappers side by side that you can appreciate the difference and sadly people assume that if they don't blow up the mapper must be decent. That's just not the case.
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Old 20th November 2016, 10:53 PM   #14 (permalink)
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Can people stop assuming that all tuners stage packages are the same. It's really easy for the stock engine to gain power by raising. Lost and the stock ecu does a great job of controlling set but there's much much more to a decent map than power figures alone. It's only if you drive two of the same power side by side that you can appreciate the difference and sadly people assume that if they don't blow up the mapper must be decent. That's just not the case.
Who would you use if Litchfield didn't exist?
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Old 20th November 2016, 11:01 PM   #15 (permalink)
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Ben Hoyle, but i don't blindly think Litchfield are the best mappers, I think they are the best ecutek GT-R mappers with the most experience and best facilities for mapping (dyno).

Bring in other platforms (life/Syvecs/pectel etc) and I'm certain there are many better. My opinion here is confined to gtr ecutek tuning since that's the topic at hand.
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Old 21st November 2016, 05:58 AM   #16 (permalink)
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So Adam are you saying that a gtr can be mapped to give you better performance without being detected by Nissan in the event of a warranty claim, because I've been led to believe that any kind of mapping could easily be detected by Nissan in the event of a warranty and could potentially void warranty claims. If there is a way to do that without it being detected then that's fantastic, who can do that and any idea of gains and costs bud.
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Old 21st November 2016, 07:14 AM   #17 (permalink)
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No, didn't say anything at all about warranties.

Remaps can be detected in that they typically increase boost beyond standard peak levels and so the black box, which records historical boost pressure will show anyone who has access to it that somehow the car is regularly achieving non stock boost levels.

From this they can assume a remap has been carried out which can then be directly checked.

Remember that a warranty is not a digital thing that is either valid or not. Any warranty claim has to be linked to the modification made in order to refuse the claim. E.g. A remap should affect paintwork warranty or headlight failure etc.
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Old 21st November 2016, 07:39 AM   #18 (permalink)
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Looks like I'll be keeping mine stock then for at least a couple of years, Ive ordered a new car simply because of the fact that God willing it'll be at least 3 years of trouble/worry free motoring. The warranty for me is more important than a bit of extra power which I'll very rarely use. I get mine in March God willing. Can't wait its killing me lol
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Old 21st November 2016, 08:48 AM   #19 (permalink)
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Didn't know you'd bought a new one too.

Totally understand re the warranty but when you say three years trouble free motoring, have you had lots of troubled years previously?
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Old 21st November 2016, 09:12 AM   #20 (permalink)
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Any mapper/tuner/Dad's friends Uncle with a VAGCOM etc who tells you their map is 'undetectable' is talking complete and utter nonsense.

The issue at play will be how much effort the Nissan dealership put into discovering your ECU history - for a paint warranty, as Adam mentioned, you're fine....... however go in with anything drivetrain/gearbox/engine related and there is a very reasonable chance your information is off to Japan for high scrutiny. At that stage, prepare your bumhole.
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