Stock ecu limitations - Page 3 - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Stachi · 22nd July 2008, 04:11 PM

Paul, here are many PFC's up for sale. Look at the for sale section.
Personally I think thats the easiest way to go.

Marc

Paul Clark · 22nd July 2008, 04:15 PM

Quote:

Originally Posted by Stachi

Paul, here are many PFC's up for sale. Look at the for sale section.
Personally I think thats the easiest way to go.

Marc

Thank you I will take a look.

zig-zag · 22nd July 2008, 05:19 PM

I got my power fc for under £400 then there'll be mapping estimate another £400,
£800 all in is not bad for a stand alone and I would personally go that route as it'll will always be safer, not saying piggyback are useless but I would think a lot less realiable and worse for your engine when your only saving £3-400 pounds.
I'd say peace of mind is worth the little extra and also gives you more options for future mods where-as you would prob need a new piggyback altogether if you were to add more mods

just my 2p's worth

Paul Clark · 23rd July 2008, 01:52 AM

Quote:

Originally Posted by zig-zag

I got my power fc for under £400 then there'll be mapping estimate another £400,
£800 all in is not bad for a stand alone and I would personally go that route as it'll will always be safer, not saying piggyback are useless but I would think a lot less realiable and worse for your engine when your only saving £3-400 pounds.
I'd say peace of mind is worth the little extra and also gives you more options for future mods where-as you would prob need a new piggyback altogether if you were to add more mods

just my 2p's worth

Input appreciated. Power fc seems to be the popular choice on the skyline. Who would be a good choice of tuner in northern england?

mifn21 · 23rd July 2008, 02:49 PM

For what its worth the standard R32/33 ECU only has 8x8 map points compared to the 16x16 of a PFC and more still for a FCON Pro - found this out from Perfect Touch when I called to discuss remap options

I was planning to just get the standard ecu remapped once the larger mafs and injectors are fitted but it seems that sticking with the original computer means compromising areas of the map due to the lack of map points

Zoltarc · 24th July 2008, 09:42 AM

Don't forget map size isn't the be all and end all of an ECU.

Naturally the standard R32 ECU is a product of the 1980s when technology hampered map sizes and so on, but good interpolation algorithms between cells and sophisticated equations can definitely produce adequate results.

For interesting reading, MegaSquirt has some fascinating material on the subject.

kismetcapitan · 24th July 2008, 11:32 AM

fyi the Power FC is 20x20. FCon is 32x32....stock is 8x8?? that sure makes mapping easy

I wonder what the map on the Z-Tune ECU looks like - if that's also 8x8.

higher resolution doesn't necessarily mean better. My car uses about 30% of the map - high-load/low RPM and high RPM/low-load never sees use.

And you can have the best ECU on the planet...and still torch your pistons with shitty mapping.

tokes · 25th July 2008, 11:11 AM

Stock is 16x16 according to my nistune maps.

Hi5 · 25th July 2008, 11:26 AM

Quote:

Originally Posted by SamuraiSam

Oh, I didn't know you new that. A Nissan MAF generally cuts off at a max of 5.112 volts. Like a MAP sensor, you do not want to run up to the maximum voltage, so knowledgable people usually say that the MAFs reach their limit at "About" 400whp.

If you re-house the AFM in a larger diameter tubing, this can be circumvented, quite commonly done

SamuraiSam · 25th July 2008, 06:43 PM

If you re-house the AFM in a larger diameter tubing you will have a different amount of airflow flowing through it at a given voltage than before modifying and will need a standalone ECU to program the new MAF voltage curve.

GreeceS13 · 29th July 2008, 12:19 AM

Guys I have RB26 T04Z and I will use 800cc sard injectors, z32 mafs and stock R32 GTR ecu!
Check my signature.

Blitz skyline R34 street project with 900hp was with stock ecu with two z32 mafs.

Nomura's Blitz R34 4door use stock ecu!!
SpecBox

Blitz Project R348
Blitz GTRBLITZ know how to explore the potential in the GTR, and have proved it with their latest monster, the R34 Project 348, where they took a road legal modified GTR up to 215 mph on a German Autobahn using parts straight from their catalogue. On the day the car ran, it used 2.3 bar boost (34PSi) and ran 890 BHP...
The 890 BHP engine uses a single KKK turbo charger, 6 x 1000cc injectors, uprated intercooler, induction kit, Nur Spec 'R' exhaust, DSBC boost control, Multi Speed Turbo Timer, Uprated pistons, High performance camshafts,uprated suspension, Blitz Aero bodykit, oil cooler, uprated clutch, Blitz Technospeed Z1 18 inch rims, Brembo 6 pot brakes, and Access ECU upgrade.

Blitz Skyline RB26DETTAll these parts are made by Blitz or made exclusively for Blitz and are available for purchase.

The R34 uses the latest colour Technospeed Z1 rim from Blitz. This unique design of split rim is in a metallic grey/silver colour, and has fine details such as individual gold studs, and a smart Blitz logo centre in matching gold.
The R348 yielded 343KPH which is not enough to break the world record set by the Veilside R34 in Rotorua (New Zealand), but it's still an incredible speed, and it is highly likely that Blitz will continue to strive to beat this awesome record.

Why you spent money for aftermarket ECUs?!?!?!?
If you have a tuner who can map your stock ecu don't spent money for nothing!

GTR ECU Limitation is the limit of z32 mafs... more than 1000hp!!

n boost · 29th July 2008, 01:28 AM

When u say stock, do u mean a remapped stock ecu?

GreeceS13 · 31st July 2008, 11:05 PM

Ofcourse remapped!!

n boost · 1st August 2008, 12:30 AM

Dont see why not and the to4z is a great turbo. Good luck!

SamuraiSam · 1st August 2008, 12:52 AM

What kind of manifold do you have? XS Power?

29th July 2008, 12:19 AM	#41 (permalink)
GreeceS13 GTR Register Member Join Date: Aug 2006 Posts: 183	Guys I have RB26 T04Z and I will use 800cc sard injectors, z32 mafs and stock R32 GTR ecu! Check my signature. Blitz skyline R34 street project with 900hp was with stock ecu with two z32 mafs. Nomura's Blitz R34 4door use stock ecu!! SpecBox Blitz Project R348 Blitz GTRBLITZ know how to explore the potential in the GTR, and have proved it with their latest monster, the R34 Project 348, where they took a road legal modified GTR up to 215 mph on a German Autobahn using parts straight from their catalogue. On the day the car ran, it used 2.3 bar boost (34PSi) and ran 890 BHP... The 890 BHP engine uses a single KKK turbo charger, 6 x 1000cc injectors, uprated intercooler, induction kit, Nur Spec 'R' exhaust, DSBC boost control, Multi Speed Turbo Timer, Uprated pistons, High performance camshafts,uprated suspension, Blitz Aero bodykit, oil cooler, uprated clutch, Blitz Technospeed Z1 18 inch rims, Brembo 6 pot brakes, and Access ECU upgrade. Blitz Skyline RB26DETTAll these parts are made by Blitz or made exclusively for Blitz and are available for purchase. The R34 uses the latest colour Technospeed Z1 rim from Blitz. This unique design of split rim is in a metallic grey/silver colour, and has fine details such as individual gold studs, and a smart Blitz logo centre in matching gold. The R348 yielded 343KPH which is not enough to break the world record set by the Veilside R34 in Rotorua (New Zealand), but it's still an incredible speed, and it is highly likely that Blitz will continue to strive to beat this awesome record. Why you spent money for aftermarket ECUs?!?!?!? If you have a tuner who can map your stock ecu don't spent money for nothing! GTR ECU Limitation is the limit of z32 mafs... more than 1000hp!! Last edited by GreeceS13; 29th July 2008 at 12:24 AM.

Thread Tools
Show Printable Version Email this Page
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

22nd July 2008, 04:11 PM	#31 (permalink)
Stachi GTROC Member Join Date: Jan 2008 Location: Near Stuttgart, Germany Posts: 834	Paul, here are many PFC's up for sale. Look at the for sale section. Personally I think thats the easiest way to go. Marc

22nd July 2008, 05:19 PM	#33 (permalink)
zig-zag GTR Register Member Join Date: Nov 2007 Location: Aberdeen Posts: 122	I got my power fc for under £400 then there'll be mapping estimate another £400, £800 all in is not bad for a stand alone and I would personally go that route as it'll will always be safer, not saying piggyback are useless but I would think a lot less realiable and worse for your engine when your only saving £3-400 pounds. I'd say peace of mind is worth the little extra and also gives you more options for future mods where-as you would prob need a new piggyback altogether if you were to add more mods just my 2p's worth

23rd July 2008, 02:49 PM	#35 (permalink)
mifn21 GTROC Member Join Date: Mar 2007 Location: London Posts: 2,067	For what its worth the standard R32/33 ECU only has 8x8 map points compared to the 16x16 of a PFC and more still for a FCON Pro - found this out from Perfect Touch when I called to discuss remap options I was planning to just get the standard ecu remapped once the larger mafs and injectors are fitted but it seems that sticking with the original computer means compromising areas of the map due to the lack of map points

24th July 2008, 09:42 AM	#36 (permalink)
Zoltarc GTR Register Member Join Date: Jun 2005 Posts: 51	Don't forget map size isn't the be all and end all of an ECU. Naturally the standard R32 ECU is a product of the 1980s when technology hampered map sizes and so on, but good interpolation algorithms between cells and sophisticated equations can definitely produce adequate results. For interesting reading, MegaSquirt has some fascinating material on the subject.

24th July 2008, 11:32 AM	#37 (permalink)
kismetcapitan GTR Register Member Join Date: Nov 2005 Location: Seoul Korea Posts: 6,401	fyi the Power FC is 20x20. FCon is 32x32....stock is 8x8?? that sure makes mapping easy I wonder what the map on the Z-Tune ECU looks like - if that's also 8x8. higher resolution doesn't necessarily mean better. My car uses about 30% of the map - high-load/low RPM and high RPM/low-load never sees use. And you can have the best ECU on the planet...and still torch your pistons with shitty mapping.

25th July 2008, 11:11 AM	#38 (permalink)
tokes GTR Register Member Join Date: Jul 2006 Location: Canada Posts: 322	Stock is 16x16 according to my nistune maps.

25th July 2008, 06:43 PM	#40 (permalink)
SamuraiSam GTR Register Member Join Date: Oct 2007 Posts: 390	If you re-house the AFM in a larger diameter tubing you will have a different amount of airflow flowing through it at a given voltage than before modifying and will need a standalone ECU to program the new MAF voltage curve.

29th July 2008, 01:28 AM	#42 (permalink)
n boost GTR Register Member Join Date: Jun 2008 Location: brmingham Posts: 434	When u say stock, do u mean a remapped stock ecu?

31st July 2008, 11:05 PM	#43 (permalink)
GreeceS13 GTR Register Member Join Date: Aug 2006 Posts: 183	Ofcourse remapped!!

1st August 2008, 12:30 AM	#44 (permalink)
n boost GTR Register Member Join Date: Jun 2008 Location: brmingham Posts: 434	Dont see why not and the to4z is a great turbo. Good luck!

1st August 2008, 12:52 AM	#45 (permalink)
SamuraiSam GTR Register Member Join Date: Oct 2007 Posts: 390	What kind of manifold do you have? XS Power?