Apexi Power Fc In An R34 Gtt

[BeAgLe]

Hey all,

Before i start, ill just let you know i tried a search but didnt find the info i was looking for specifiacally.

I rang around a few places yesterday to get a quote for a new exhaust for my R34 GTT as it currently has a 2.5" pipe with a nismo muffler. The cheapest i got was $1600 for a FULL package. As soon as he said the price, i was like WTF, i might aswell spent less that that on a Power FC and tune and i will get much more power gain off it and the car will run smoother and more efficiently...

So, if i buy a power fc and hand contoller, what EXACTLY will i need to do? I have been told i will need a Z32 AFM and harness, but is that all??? I wont be installing it untill the car is on the dyno so as soon as it starts up with the FC installed, it can be tuned immediately...

So is it just plug and play with the Z32 and FC, or are there more things i need before i start?

I want to get ALL the info and parts BEFORE i try anything so my car will be ready when the time comes to tune it...

Thanks in advance!

[MADGT4]

What has this got to do with the V35?

[Rezz]

Obvious misplaced thread.

Moved to Skyline Specific.

[32vspecII]

the power fc just plugs in

thats it

but you should do the exhaust 1st or it will restrict what power gains you will get from everything else including the power fc

from just japs website

X-Force Mild Steel Exhaust System - Skyline R34 GTT Price: $899

3 inch to cat and 3.5 from the cat back

[siddr20]

1.6k for full exhaust system sounds alright..

See if you can find a second hand catback.

Spilt dump/front pipe- 420

Hi-flow cat- 300

Anyways you will have better gains with a full exhaust system than the power fc at this stage.

After exhaust go purchase a boost controller, and FMIC.

Then once you get the hang of the power, then go purchase a power fc.

I dont know about r34s.. But theres no need for z32 afm, with just basic mods.

Edited October 9, 2006 by siddr20

[gtt23]

have 200rwkw r34 gtt -

no z32 afm or high flowed turbo or anything like that -

as far as power goes just;

power fc + boost controller + intercooler + pod + exhaust

hope this helps

john.

[nuffsaid]

What kinda boost are you running?

[SKY 34]

have 200rwkw r34 gtt -

no z32 afm or high flowed turbo or anything like that -

as far as power goes just;

power fc + boost controller + intercooler + pod + exhaust

hope this helps

john.

~~ in fact the boost controler and the exhaust is sufficient..the pfc is required for futher mods~~

[gtt23]

What kinda boost are you running?

soz - nfi - i think .8 bar

e-01 is a bit complex for me

pic below on startup

http://tkfiles.storage.msn.com/x1pxzZ39wV-...Z0c4edeHNwt9S04

john.

[SKY 34]

wow...I'm actually running at 1bar to obtain 200rwkw

what other mods have you got?

[gtt23]

wow...I'm actually running at 1bar to obtain 200rwkw

what other mods have you got?

goto:

my car's profile

the 200rwkw was done before the power fc when was on e-manage - was bad tuned though

have since changed shops, computers (to power fc), re-tuned, fuel (to 100) and boost(upped a bit)

new shop has tuned much better but won't use shoot-out mode on dyno

i think my boost is set at .8 but it seems to go up to .9 and sometimes 1 bar

i don't really understand it but it feels good and goes well so i'm happy

john.

[SKY 34]

I think for 200rwkw should be around 1bar..I use a pfc as well, probably because you have your fuel as 100ron~~

[infected flow]

I think for 200rwkw should be around 1bar..I use a pfc as well, probably because you have your fuel as 100ron~~

with turbo back exhaust + air pod + front mount i/c + power fc u should be getting over 200rwkw and with coils and boost at 11psi u should get over 210..

1bar to get 200rwkw thats not right at all.

cheers

[SKY 34]

yeah have all those except for 100 ron..sitting on 200rwkw not budging

[shonen]

If your just after a PFC...than a Z32 is NOT necessary, rather its the other way around.

If you switch to a Z32 than a PFC or other aftermarket ECU is necessary.

Having said that, its a bit of a waste to get a PFC so early in your build up, as you will have to retune it with every subsequent mod to get the best out of the car.

Get a full exhuast, fmic, boost controller, splitfire coils and THEN a PFC to tune it with those mods.

[BeAgLe]

Hey,

Thanks for the replies!

I should have mentioned my mods first, so here they are:

Air pod

2.5" exhaust with nismo muffler

600x300x76mm FMIC

Electronic Boost Controller

Im pretty sure the actual exhaust pipe is aftermarket coz it looks around 2.5" and has the nismo vss muffler on it, but is VERY quiet and seems restrictive, thats the only reason i wanted a larger (and louder) one.

My low boost is set to 7psi which i use every day and my high boost is set to 10psi which i flick on to show someone how it goes or whatever which is very rarely.

Also, the PFC will remove the speed limiter wont it, as i have hit 180 a few times and the car just dies... if i go say 220, what will the stock speedo in the dash do? Will i need a nismo 320k dash too?

Thanks.

[G_Force]

Hey,

Thanks for the replies!

I should have mentioned my mods first, so here they are:

Air pod

2.5" exhaust with nismo muffler

600x300x76mm FMIC

Electronic Boost Controller

Im pretty sure the actual exhaust pipe is aftermarket coz it looks around 2.5" and has the nismo vss muffler on it, but is VERY quiet and seems restrictive, thats the only reason i wanted a larger (and louder) one.

My low boost is set to 7psi which i use every day and my high boost is set to 10psi which i flick on to show someone how it goes or whatever which is very rarely.

Also, the PFC will remove the speed limiter wont it, as i have hit 180 a few times and the car just dies... if i go say 220, what will the stock speedo in the dash do? Will i need a nismo 320k dash too?

Thanks.

U'd be better off spending ur money on the xhaust first, if not a turboback, at least a catback with Hi-flow cat, see group buys for some great deals. No point getting a Power FC if u dont have an exhaust(see Paul's website), u wont gain much out of it with a restrictive xhaust. Bang for buck(power gain for ur $) u probly wont go past a turboback either.

U can pick up used catbacks in the ForSale-Private section for a decent price sometimes. I did n im happy with my Blitz NUR Spec. Otherwise an X-Force is great value for $, if u wanna save $ and ur not bothered bout flashy Jap systems or xhaust tones.

With an exhaust n the BC u already have, u should be able to make some decent power gains. Next step from there Power FC n if u wanna go with a bigger turbo, then a Z32 may be required.

Cheers.

[17SOK]

Also, the PFC will remove the speed limiter wont it, as i have hit 180 a few times and the car just dies... if i go say 220, what will the stock speedo in the dash do? Will i need a nismo 320k dash too?

Stock speedo will still be ok... Unless you actually want to know what speed you're doing? In which case the hand controller can give you a speed reading (although very difficult to read while you are travelling at that speed). Must say it's little scary to see the needle bang against the stopper (Of course it was on a racetrack )

I must say (despite some other people's opinions) that a power fc is a good mod early in the piece for an R34. I had some flat spot issues when I installed my EBC which were completely eliminated with the power pc.

As for the Z32 afm... It's really not necessary, as the resolution of the stock 34 one is very good.

Here's a list of my mods:

Apexi power filter

Blitz id3 EBC

Catco 5 inch cat

Reinhard cat back exhaust

Power fc

Made 185 rwkw on a 'safe tune' as the mechanic said he didn't want to lean on it too much as the stock SMIC starts to struggle around these power figures (I have since heard that the stock cooler is good for 200 rwkw but who knows really).

Give Ivan a call at Hi-power racing at slacks creek - very happy with the reinhard exhaust and it only cost $750... Cat was purchased through a GB on this forum.

Cheers.

Edited October 21, 2006 by 17SOK

[R34driftin]

Stock speedo will still be ok... Unless you actually want to know what speed you're doing? In which case the hand controller can give you a speed reading (although very difficult to read while you are travelling at that speed). Must say it's little scary to see the needle bang against the stopper (Of course it was on a racetrack )

I must say (despite some other people's opinions) that a power fc is a good mod early in the piece for an R34. I had some flat spot issues when I installed my EBC which were completely eliminated with the power pc.

As for the Z32 afm... It's really not necessary, as the resolution of the stock 34 one is very good.

Here's a list of my mods:

Apexi power filter

Blitz id3 EBC

Catco 5 inch cat

Reinhard cat back exhaust

Power fc

Made 185 rwkw on a 'safe tune' as the mechanic said he didn't want to lean on it too much as the stock SMIC starts to struggle around these power figures (I have since heard that the stock cooler is good for 200 rwkw but who knows really).

Give Ivan a call at Hi-power racing at slacks creek - very happy with the reinhard exhaust and it only cost $750... Cat was purchased through a GB on this forum.

Cheers.

Hi guys,

The funny weired thing about this is that i made 197 rwkw with everything factory except a boost controller (GFB Boost tap) to 13psi. (Automatic/tip-tronic)

What i would like to know though is..... does anyone know how to wire a GTR POWER FC into a GTT Auto in a piggyback style???

[paulr33]

Hi guys,

The funny weired thing about this is that i made 197 rwkw with everything factory except a boost controller (GFB Boost tap) to 13psi. (Automatic/tip-tronic)

What i would like to know though is..... does anyone know how to wire a GTR POWER FC into a GTT Auto in a piggyback style???

hello

wether you choose to wire in BNR34 PowerFC or ER34 PowerFC in auto GTT the same problem is present

the ECU is a manual based ECU and it assumes the driver will clutch in on gear change (this the load axis is reduced etc)

it doesn't expect nor does it understand the autogearbox needs logic to change gears.

there is no known way to make the powerfc know the auto box is present and "work".

the auto stock ECU understands the auto box and will have shift logic coded to ensure the gear changes are smooth and not harsh on the auto box (retard timing on gear change).

so

auto ecu

you floor it, keep flooring it and don't take off the throttle, the ECU goes thru its mapping and reaches a point and says oh time to change gears, cool back out the timing, hey autobox its OK to change gears know, auto box changes, ECU resumes normal mapping and timing

manual ECU (any, not just powerfc)

you floor it, keep floring it and don't take off the thorttle, the ECU goes thru its mapping and continues (as it assumes manual) and expects you will contro gearchange ie throttle off / clutch in but the autobox must change at some point due to its mapping so it does so, assuming the ECU has backed out its timing and is ready for the change, but its not as the manual ecu wont listen / care and the autobox will give a flared / harsh change as the engine is still under full load instead of reduced load from backed out timing

so

does powerfc work in an auto? yes

will it be driveable? yes

will it work really well? probably not

will it make the auto box angry and risk its life? definetly

the only plausibe way i could see is you keep the stock ecu and intercept every sensor etc to the powerfc and piggyback it, but whats the point?

just get a proper supported solution in the first place, there are a number of auto tuneable options retaining the std ECU correctly

and it doesnt mattter what ECU / system you use

how its tuned will determine what power it makes (and how). ie a powerfc based skyline wont make more power than a HKS FCON based skyline (assuming same car type etc).

its all bout how it is tuned and (if) tuned correctly. so dont think you must get a powerfc just because people make power with them, you should make the same power with nistune, vipec, motec, wolf, autronic etc if tuned correctly