Not as quick as she used to be,,, - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

brett21 · 16th July 2008, 05:38 PM

I have noticed my 32 GTR is not as quick, its 455hp @F & she was quick, i have 2 settings on the Power FC, 1.15B & 1.20, its now seems quicker on lower boost
also the idle has gone up to 1000 rpm, (air con off) it was bang on 950/75.
Last month it would hold back with 2 people in the car with luggage, it felt like the coils, it has very low mileage Trust 8 plugs, i have ordered a set of Split Fires from Newera, hopefully here this week,
I had a good spray with WD & Brake cleaner a round the vacuum pipes & inlet manifold/ injectors & no movement on the rev's,
Has any one else got any ideas for me to check?

Cheers

kismetcapitan · 16th July 2008, 07:05 PM

try resetting your boost settings. Change the duty setting, and you'll see the "255" in the far right column go back to, well "255". See if that doesn't help add some spark - the Power FC always boosts hardest at the beginning of the self-learning cycle. The more it learns, the softer the boost hits.

brett21 · 17th July 2008, 05:58 PM

Quote:

Originally Posted by kismetcapitan

try resetting your boost settings. Change the duty setting, and you'll see the "255" in the far right column go back to, well "255". See if that doesn't help add some spark - the Power FC always boosts hardest at the beginning of the self-learning cycle. The more it learns, the softer the boost hits.

I think you may have hit the nail on the head!! Cos i have noticed those figures have changed to what they used to be, but i dont know what they were? It used to have only 2 settings now has 4! What should the duty setting be?

kismetcapitan · 17th July 2008, 11:54 PM

if you were happy with it before, just change it to something random, then change it back. The Power FC will reset the self-learning as soon as you change the duty, even if you return to the original value.

Then take her out for a run and see how it goes!

16th July 2008, 05:38 PM	#1 (permalink)
brett21 GTROC Member Join Date: Apr 2005 Location: Surrey Posts: 356	Not as quick as she used to be,,, I have noticed my 32 GTR is not as quick, its 455hp @F & she was quick, i have 2 settings on the Power FC, 1.15B & 1.20, its now seems quicker on lower boost also the idle has gone up to 1000 rpm, (air con off) it was bang on 950/75. Last month it would hold back with 2 people in the car with luggage, it felt like the coils, it has very low mileage Trust 8 plugs, i have ordered a set of Split Fires from Newera, hopefully here this week, I had a good spray with WD & Brake cleaner a round the vacuum pipes & inlet manifold/ injectors & no movement on the rev's, Has any one else got any ideas for me to check? Cheers

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16th July 2008, 07:05 PM	#2 (permalink)
kismetcapitan GTR Register Member Join Date: Nov 2005 Location: Seoul Korea Posts: 6,606	try resetting your boost settings. Change the duty setting, and you'll see the "255" in the far right column go back to, well "255". See if that doesn't help add some spark - the Power FC always boosts hardest at the beginning of the self-learning cycle. The more it learns, the softer the boost hits.

17th July 2008, 11:54 PM	#4 (permalink)
kismetcapitan GTR Register Member Join Date: Nov 2005 Location: Seoul Korea Posts: 6,606	if you were happy with it before, just change it to something random, then change it back. The Power FC will reset the self-learning as soon as you change the duty, even if you return to the original value. Then take her out for a run and see how it goes!