Q45 Afm Anyone Run One On An N/a?

[skyla]

Hey guys/gals

I have just brought a 80mm throttle body, that I want to fit to my R33 GTS25 as part of an on going project. I realise that I will need to get a plate made up to fit it to the intake manifold, but am unsure what else I will need to get done to get it to work, keeping in mind that I am already running a after market ecu (GTS Link) so hopefully I won't have any issues with reprogramming the ecu.

Has any one tried putting a larger throttle body or enlarging the factory T/B on there N/A? and what sort of gains were achieved?

Cheers

Rach

search tags: q45 afm upgrade n/a rb25 rb30 throttle body

[dondesoto]

  skyla said:

Hey guys/gals

I have just brought a 80mm throttle body, that I want to fit to my R33 GTS25 as part of an on going project. I realise that I will need to get a plate made up to fit it to the intake manifold, but am unsure what else I will need to get done to get it to work, keeping in mind that I am already running a after market ecu (GTS Link) so hopefully I won't have any issues with  reprogramming the ecu.  

Has any one tried putting a larger throttle body or enlarging the factory T/B on there N/A? and what sort of gains were achieved?

Cheers

Rach

on my rb25de headed rb30e, i put a modified xf falcon t/b ( had it bored out 4mm making it 68 mm at the butterfly) . was an easy fit . just ported manifold a bit to suit the t/b . now i remember had to mess with the t/b switch a bit , give you details if you want . as for performance difference , i dont really know cos i never ran the engine before i had put in on .

[NA_R33]

i put a Q45 throttle body on my gts25 cept they left the whole engine attached..

[skyla]

  NA_R33 said:

i put a Q45 throttle body on my gts25 cept they left the whole engine attached..

lol nice

Well it looks like this hasn't been done too often, I will post up results when the T/B goes on

[WazR32GTSt]

  skyla said:

lol nice

Well it looks like this hasn't been done too often, I will post up results when the T/B goes on

if you are going to put an 80mm throttle on the car, then it would make sense to make sure ALL the induction piping is, at minimum, 80mm or else i don't see the point

my mate with an NA 300zx put on ported throttle bodies when he got his heads ported. They made a nice difference, but he kept all the induction sizes the same so it made sense

interested to see the result... keep us posted

[N/A MIKE]

Any run one on an N/A?? 2.5L or 3L

Im alittle worried about low air speed readings at low rev/ideling.

[dyken]

i think a q45 may be to big for an NA. have you ever thought about using a z32 afm

[SKiT_R31]

im putting one on my car atm (actually in the middle of it, only on the net to find safc in/out settings) thats on a 30de, ill let you know how it goes.

it sucks heaps at idle though, so with any luck the air speed wont be too bad, on an n/a 25 i really cant imagine you needing anymore than a std rb25 afm

[N/A MIKE]

see my other post to get a beter idea of what im doing.

http://www.skylinesaustralia.com/forums/It...cu-t206781.html

[SKiT_R31]

just had it going then, perfect, idles mint, starts first go, revs crispt and instaant, no flat spots, no splutter, pure q45 lov'n

[Eug]

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