limits of the RB25DET AFM? - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

NewClearBomb · 25th July 2005, 11:46 AM

I'm planning to fit 550cc injectors and run 1.2 bar boost (steel internal T3 hybrid) on my RB25DET. I know I'll need a different air/fuel controller, but do I need to upgrade the AFM or is the standard one ok?
cheers,
James

mattb · 25th July 2005, 11:48 AM

probably. You can get a Q45 AFM pretty cheap or a 300ZX AFM I think,

Lamb · 25th July 2005, 11:55 AM

Hi mate,

Ive got a brand new 300zx air flow meter if your interested.
Its still in the box and never been used.
Cost around £400 from nissan......pm me a sensible offer as i need the cash!!

Thanks
Harry

NewClearBomb · 25th July 2005, 12:31 PM

cheers guys.
Harry, I'll see what the going rate is, but I'm hoping it's nowhere near £400

So what is the practical maximum BHP rating of the stock RB25DET AFM?

Jakester · 25th July 2005, 12:57 PM

300hp

NewClearBomb · 25th July 2005, 12:59 PM

hmm, I'm currently running 316bhp at the hubs with what I believe is the standard AFM on....

D4T · 25th July 2005, 02:37 PM

thought it was around 350bhp atf

NewClearBomb · 25th July 2005, 03:04 PM

ahh ok. Sounds like I'm pretty much running it flat out if it's the standard RB25 one then....
Can anyone confirm that's what I've got please?

It's got a pink sticker on that says
22680 31U00 A36-608 E60
5424D

25th July 2005, 11:46 AM	#1 (permalink)
NewClearBomb GTR Register Member Join Date: Sep 2003 Location: Birmingham Posts: 74	limits of the RB25DET AFM? I'm planning to fit 550cc injectors and run 1.2 bar boost (steel internal T3 hybrid) on my RB25DET. I know I'll need a different air/fuel controller, but do I need to upgrade the AFM or is the standard one ok? cheers, James

25th July 2005, 11:55 AM	#3 (permalink)
Lamb GTROC Member Join Date: Sep 2003 Location: Herts Posts: 1,329	Hi mate, Ive got a brand new 300zx air flow meter if your interested. Its still in the box and never been used. Cost around £400 from nissan......pm me a sensible offer as i need the cash!! Thanks Harry __________________ Too often we lose sight of life's simple pleasures. remember, when someone annoys you it takes 42 muscles in your face to frown. but it only takes 4 muscles to extend your arm and bitch-slap the motherfuNker upside the head. ----------------------------------------------------------------------- Blown by a T04z - built and mapped by Tweenierob ..... http://www.junsuperlemon.co.uk http://www.neweraimports.com

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25th July 2005, 11:48 AM	#2 (permalink)
mattb GTR Register Member Join Date: Feb 2002 Location: Milton Keynes Posts: 1,416	probably. You can get a Q45 AFM pretty cheap or a 300ZX AFM I think,

25th July 2005, 12:31 PM	#4 (permalink)
NewClearBomb GTR Register Member Join Date: Sep 2003 Location: Birmingham Posts: 74	cheers guys. Harry, I'll see what the going rate is, but I'm hoping it's nowhere near £400 So what is the practical maximum BHP rating of the stock RB25DET AFM?

25th July 2005, 12:57 PM	#5 (permalink)
Jakester GTR Register Member Join Date: Sep 2003 Posts: 347	300hp

25th July 2005, 12:59 PM	#6 (permalink)
NewClearBomb GTR Register Member Join Date: Sep 2003 Location: Birmingham Posts: 74	hmm, I'm currently running 316bhp at the hubs with what I believe is the standard AFM on....

25th July 2005, 02:37 PM	#7 (permalink)
D4T GTR Register Member Join Date: Jun 2004 Location: Sussex Posts: 427	thought it was around 350bhp atf

25th July 2005, 03:04 PM	#8 (permalink)
NewClearBomb GTR Register Member Join Date: Sep 2003 Location: Birmingham Posts: 74	ahh ok. Sounds like I'm pretty much running it flat out if it's the standard RB25 one then.... Can anyone confirm that's what I've got please? It's got a pink sticker on that says 22680 31U00 A36-608 E60 5424D