R34 Pfc Doesnt Run All S1

[Duncan]

apparently but I haven;t had a chance to book it in - hopefully next week. will post up once it is sorted

[GoldZilla]

Bump...

Any news, Duncan?

[Duncan]

yes!

In news just in......I am a slacker!

[GoldZilla]

I might call Mark tomorrow - I've got an FMIC to go in too, so I might as well get them done at the same time.

[Duncan]

booked in to be installed next week btw. will update when I have news

[yokotas13]

coooolio

im in for the wait

[GoldZilla]

Me too.

[Duncan]

news...

well the guys at hills went to the effort of putting developing a plug in loom extension to swap the pins required for the late s1 stageas. What they didn't get sorted out is some sort of difference between the 34 gtt and late stagea coils which caused the #6 ignition chip to burn out after about 30 min. PFC is off for repairs, then a firmware upgrade to sort that, then we will be back in business. 2-3 weeks probably.

this has been a real saga. I recommend aganist buying a late s1 stagea if you are thinking about modifying it - stick to the early model where everything works ok

[Duncan]

bloody hell this thread went on too long!

anyway, I've got the car back with the PFC in and all running beautifully. a hell of a lot of work went into getting it working. the good news is I didn't really pay for the development (just a tune) but that means I can't really share the wiring changes (except to say there are a lot). Mark @ Hills Motorsport finally worked through it all and has developed a piggy back loom so the standard wiring doesn't require modification. Anyone with 9/97-8/98 stagea really should talk to him to get it sorted.

The standard auto ECU was working very poorly with the manual conversion (looks like this is another late series ECU surprise). The late ECUs put heaps of timing in over 4000 when it doesn't get a signal from the ECU (45o at 4500!!) which turned out to be the cause of my pinging problem....I had changed the fuel pump, FPR, air flow meter trying to chase that problem. It also runs very very rich (up to 9.5:1) and to add insult to injury the closed loop (02 sensors) turn off over 2800rpm and 1/4 throttle, no wonder fuel economy was woeful.....PFC has sorted it all out perfectly.

I will work out how to overlay the original dyno graph (130rwkw) with the new one, they are a very interesting comparison

Its now making 175awkw at 13psi....which made the clutch slip so boost is back down to 11psi (155awkw). but most importantly the mid range is very strong, and the initial throttle response 1000-1500rpm is noticeably sharper. top end really runs out of puff though.

mods are:

3" turbo back exhaust

11psi boost (greddy profec b)

manual conversion

r34 power fc with wiring changes

intercooler, injectors, turbo, intake etc are standard.

[KiwiRS4T]

What are your future plans? Would be interested to see if R34 SMIC upgrade helps or are you comitted to FMIC and highflowed or bigger turbo?

[Duncan]

right now it will stay as is, its taken ages to get it sorted after the manual conversion, and now with the extra power, sydneykid's suspension, interior goodies it is very nice to drive and suits it's job very well (towing, moving the kids around and daily driver). I'm not looking to push it power-wise or anything, it just needed a bit more poke than it used to have.

if the opportunity comes up for the right price I will do:

front mount (it was really quite hot on the dyno even at 11 psi.) personally I don't think the 34 sidemount can make enough difference to be worthwhile, but I've never tested back to back

skyline cams and a cam gear

new clutch

highflow turbo

but I am certainly not in a rush.

[Tangles]

the other option is a Toshi ecu remap chip with chip-to-chip adapter plate soldered in place

for around $700ish all up

tune on friday, will be 200+kw

[_Ryan_]

8/97 FTW

did economey improve?

[Duncan]

not sure yet, I am running the first full tank now. welcome to the difficult ecu club btw.

tangles, I've run remaps for years in the race cars and am very happy with them as well. its just that there are some extra costs for the daughterboard/ecu mods in these cars, and they are a little harder to retune. But I think its a very viable option.

[Tangles]

not sure yet, I am running the first full tank now. welcome to the difficult ecu club btw.

tangles, I've run remaps for years in the race cars and am very happy with them as well. its just that there are some extra costs for the daughterboard/ecu mods in these cars, and they are a little harder to retune. But I think its a very viable option.

nice, Im new to turbo's, and I definately suggest a Toshi remap in conjunction with a piggyback such as safc/sitc, emanage ultimate, haltech interceptor etc.

mod chip plate is a cple hundred, chip and tune is the same, plus soldering costs for the mod chip plate bracket holder

[GoldZilla]

As of this morning, my car is now in the shop having some surgery!

[Duncan]

mark @ hills is also looking for someone with an auto that wants to run pfc. they have done a lot of work on running pfcs with the auto trans computer and need a stagea to get it sorted out

[GoldZilla]

Got my car back today and it feels totally different!!! Here's the work I had done:

FMIC installed (finally!!!) - GReddy Spec R-HG return feed kit;

PowerFC installed and tuned (finally!!!);

X-Force split front/dump pipe;

X-Force high-flow catalytic converter.

[wolverine]

congrats nick.

doesn't it make a huge difference with the PFC tuned. so much low and mid-range power that is unlocked which transforms the car.

Edited August 16, 2008 by wolverine

[Ska]

I miss my stagea, *runs of crying to the corner*