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Discussion Starter · #1 ·
As I have previously mentioned in a couple of my posts I intend to back to back test many of the mods that claim to add power to the GTR.
As a starting point I point I have dyno’ed my MY13 (2014 plate – with some of the MY14 bits) car.

I have nothing to gain from any of the testing I do. I am not a tuner, nor do I sell parts or tuning services.

I have use of a AWD Dyno Dynamics for my testing and I can run my own cars.

All of my testing will include 5-6 dyno pulls before a modification, then 5-6 dyno pulls after the modification.
The highest number will always be used.

The following is my benchmark data.

Nissan claim 550 PS for the MY13 & MY14 GTR








Dyno is always set to the same bed width:



Temps are always consistent:



Tyre Pressures will always be the same:



Same exhaust trim will always measure AFR:



Bonnet will always be up and boost source will always be the same:


The tests will always be done in Shoot_44 with the [email protected] RR.

The main thing I noticed on the road regarding the SAVE mode is the lack of boost/how slow it builds boost.
On the dyno it is really clear when you look at the boost trace, but interestingly the AFR is much closer to what I would expect to see on a normal car, unlike the flat 10 AFR when on R mode.

Mark :wavey:
 

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just for the sake of clarity

the 576 was that in R or normal, if not R then what was the WHP of the 576?

Simon
 

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in for the updates

I did similar when I first got my car, but not all the same day, 5/6 runs, etc. Have a gradual progression over months/years on the same dyno.
 

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Discussion Starter · #4 ·
just for the sake of clarity

the 576 was that in R or normal, if not R then what was the WHP of the 576?

Simon
576.6 PS at the crank.
No PS figure at the wheels but I'll print that out next time I'm down there.

439.6 Wheel HP in R mode.
Normal mode makes no difference in relation to power output, just throttle mapping & gear shifting.
 

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Discussion Starter · #7 ·
I will always display WHP, BHP (crank HP) and PS (crank & wheels).

The Dyno is at Eurospec in Guildford.
 

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Discussion Starter · #9 ·
SAVE mode is what I get if I press down on the left RRR button.
 

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A tuners paradise! :D

But at least it confirmed what the dealer said about knocking 100hp off in Save mode, that's why it pulls 34mpg on a run.

"it measures losses on coastdown honest guv" lmao

is save mode there in my 09 car ? 34mpg is mighty impressive for a 3.8 tank :eek:
 

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Discussion Starter · #19 ·
Run 16 & 17 on the Boost/AFR graph are with the aftermarket Y Pipe.
 
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