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Afm Choice And Pod Systems For Gtr

Betz

By Betz,
in Engines & Forced Induction

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Betz Rising Star

Betz

Posted
Posted

my GTR has dropped an AFM, apexi pfc tells me so and the trust pod kit on the car is crap atm, I have cleaned up the AFM's and one is still dropping out.

as I am looking for a power increase at the moment and this area has let me down I am considering options for the intake side of my quite stock brn32.

come forth and impart your wisdom as I need it now to help tame my ever cantankerous GTR

comments appreciated

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Betz Rising Star

Betz

Posted
  • Author
Posted
What mods do you currently have?

The stock airbox is good for into the 300rwkw range if you put a decent panel filter in, not some cheapie

I would go that way but its all been removed prior to owning the car, reason for mentioning pods is bacause its whats on it at the moment, so basic bolt fit remove/replace.

the car has 3" exaust, cam gears, PFC, and pods.

not looking to go to crazy yet but the pod setup that is on the car is not in the greatest condition and as I understand if I use RB25 or Z32 airflow meters the pods have a different fitup so I would need to upgrade them at the same time

TRB032 Newbie

TRB032

Posted
Posted

I JUst had my 32gtr flo meter playing up for a while. ie.. losing power off/on, bad idle etc.

I recently found it to be the rear meter, and its still in workshop getting an

Apexi D-Jetro power FC fitted; the one that dosnt require the flow meters at all,

so hopefully illiminated the prob completly and allowed for max flo allong with

a new set of apexi pods and custom piping.

Should be good, hoping to get her back by this w/end.

700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted
my GTR has dropped an AFM, apexi pfc tells me so and the trust pod kit on the car is crap atm, I have cleaned up the AFM's and one is still dropping out.

as I am looking for a power increase at the moment and this area has let me down I am considering options for the intake side of my quite stock brn32.

come forth and impart your wisdom as I need it now to help tame my ever cantankerous GTR

comments appreciated

Go Nismo..direct plug in and bolt on..no mods..are cheap now every where....

Wish some one would have told me before I bought the RB25/20 type...but then again..these were like 400+freight not long ago

Horray for the Aussie dollar...

http://www.nengun.com/nismo/air-flow-meter

heller44 Mentor

heller44

Posted
Posted

$366 ea delivered isn't quite what I would call cheap. A little less (ouch!) expensive maybe..

I am in the same boat as Betz, having to replace the worn out M's pods and the afm's.

The options for me as I see them are:

1) pods with rb20/25 secondhandies.

2) pods with z32's

3) pods with nismo afm's

4) replacement stock airbox with nismos.

5) haltech or pfc d-jetro (with pods or airbox as well) (local tuner prefers haltech)

opinions?

Blitz Grand Master

Blitz

Posted
Posted
$366 ea delivered isn't quite what I would call cheap. A little less (ouch!) expensive maybe..

opinions?

If you are complaining that $366 delivered for brand new Air Flow Meters is expensive, you shouldn't be playing with a GTR.

sewid Grand Master

sewid

Posted
Posted
$366 ea delivered isn't quite what I would call cheap. A little less (ouch!) expensive maybe..

I am in the same boat as Betz, having to replace the worn out M's pods and the afm's.

The options for me as I see them are:

1) pods with rb20/25 secondhandies.

2) pods with z32's

3) pods with nismo afm's

4) replacement stock airbox with nismos.

5) haltech or pfc d-jetro (with pods or airbox as well) (local tuner prefers haltech)

opinions?

Well a brand new Z32 airflow meter is around $310 rrp in Australia so when you factor in adaptors for the electrics (say $40) and the adaptors/reducers because they're not the right size (80mm vs 60mm) and you're not really saving yourself any money by going Z32. It's a coin toss and the Nismo's win in my book for looking stock and requiring less stuffing around and being bugger all more in the long run.

Second hand AFM's... Well an RB20 AFM could be 16 years old and they aren't exactly known for being beacons of reliability so you're buying into an unknown. RB25 AFMs are getting on a bit too. I personally think RB25 AFMs are a downgrade of epic proportions since you both have to stuff around with piping size and get next to no more resolution.

In my opinion it should go:

1) Nismo AFM's with standard airbox.

2) Z32s with pods

3) There is no number 3

RBwhatever Veteran

RBwhatever

Posted
Posted (edited)
If you are complaining that $366 delivered for brand new Air Flow Meters is expensive, you shouldn't be playing with a GTR.

Yeah, GTR stuff isn't cheap. It costs more than a R32/3/4 gts-t/gt-t in every department. So $366 ain't bad at all.

Edited by KeyMaker
sewid Grand Master

sewid

Posted
Posted
what about RB20's? is the z32 afm also a good option?

ive also read somewhere that a gtr afm can be used as an upgrade...

is this correct? what would you knowledgeable fellows suggest?

With what ECU? I'd say if you have an AP PowerFC then Z32 would be the best bet. STD RB26 would offer next to nothing for you. Unless you're already maxing out your current AFM (i.e. reading 5.1v well before you've reached peak power) then why would you change it?

djr81 Grand Master

djr81

Posted
Posted

Apexi make a nice pod filter set up that bolts to the Z32 AFM's. It includes the plugs you need to splice into the loom.

I have that kit + two Bosch AFMs, which with a cover work nicely.

If you know just about anyone in a trade they should be able to source the Bosch gear at a discount or trade rate. They are a direct equivalent for the Nissan items, just cheaper.

Cheapest upgrade uption is still some Nismo AFM's however.

Beer Baron Grand Master

Beer Baron

Posted
Posted

the best and cheapest way is to go nismo afms, and either use the stock airbox (if you have one) or get some apexi pods.

zennon, the GTR AFM is a downgrade on an RB20. the only real AFM upgrade for an RB20 is a Z32 AFM.

ZENNON Grand Master

ZENNON

Posted
Posted
With what ECU? I'd say if you have an AP PowerFC then Z32 would be the best bet. STD RB26 would offer next to nothing for you. Unless you're already maxing out your current AFM (i.e. reading 5.1v well before you've reached peak power) then why would you change it?
zennon, the GTR AFM is a downgrade on an RB20. the only real AFM upgrade for an RB20 is a Z32 AFM.

Thanks guys - the ECU has apparently been remapped but for all I know it could still be stock (seller did lie about other things). As for maxing out current AFM - I'm not sure - don't know what it is reading since i have no way of telling but i think my car has an airflow problem as it feels like it hits a wall when it reaches 5000rpm. It has a 3" turbo back exhaust so I think the restriction must be the AFM - further more the 5000rpm problem is worse in the day time and on very cold nights when the air is very dense it goes away all together. (car has pod with stock turbo and running 11 psi) (have SAFCII lined up so ill get that before AFM and when car was on dyno the AFRs were stable...)

heller44 Mentor

heller44

Posted
Posted (edited)
If you are complaining that $366 delivered for brand new Air Flow Meters is expensive, you shouldn't be playing with a GTR.

I do understand what you are saying. What I am trying to decide is the most economical use of my cash, for the best practical result.

Using the original filter box isn't an option either because I'd have to purchase one, M's only on here when bought.

The thing is, If I am paying that for the nismo's, and then more for the filters and adapters, I feel that z32's offer the same result for less outlay, and are available in australia..

Then the other option is the haltech e11v2 or the pfc d-jetro, plus filter kit, as I need a new ecu (only running stock atm) and the price comparison between pfc + afm's, pfc-djetro and haltech is as nearly the same.

james.

Edited by heller44
STATUS Grand Master

STATUS

Posted
Posted

the best GTR intake pod kit is the blitz 26024. when i had my gtr i did a comparo (advantages of having stockpiles to rumage through) between the trust, apexi, kn and blitz and the blitz was the only one with a measurable advantage over the rest...most likely due to the supplied plenum type afm adapters, the kn ones actually tested quite poorly agaist this bunch. 80,000kms later and the filter has no adverse effects on anything.

this is the 26024 http://www.blitz-uk.co.uk/ProductItem-173.aspx

post-34927-1183004920_thumb.jpg

STATUS Grand Master

STATUS

Posted
Posted
don't the Blitz filter small rocks at best?

nah it is suprising, even after neglecting the filters on the gtr and checking the inlet tracts after about 20k (the only reason i got worried was because they re-did our road and a full fortnight of travellng on gravel had me stressing) but they were spotless, we just upgraded to T517's and the compressor blades are still as new after 80k of total usage...

this is only rumour but i hear zoom and hpi are about to release their filter test results and have got some myths to bust :P

Betz Rising Star

Betz

Posted
  • Author
Posted

dropped the afm's to the auto sparky today, he is going to cut the covers off and re soldier the connections, I'll then test it and see if it is still munted..

If I have a dead one then I spose I'll open my wallet again and fork out for some nismo ones and a pod kit, nengun lists the apexi bnr32 kit for $197 + delivery.

looks like 2 minute noodles fortea again tonite :P

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