Charbzilla

thats amazing! thanks Stat. My question is though... how many maps did you need to have to allow optimal driving conditions for all year round? i'll only have the one map (power FC) so the lack of adaptability might be the reason i might need the o2 sensor perhaps?

THanks paul, is it eventually neccessary to have the o2 sensor feedback fnction back ON for the powerFC? Lets just say i get it retuned without this function on, can the car depend on the ignition/timing tune alone. (i.e. can i still achieve 400kms with a perfect tune and NO F/B o2?) OR will i definately still need to use the o2 sensor feedback function? (better performance for a range of different weather temps, fuels, etc)

the intake temp of 43 on the dyno was correct because it was dynoed after 5-5.5 hours of dyno tuning (as we were having problems with the leaning problem). my oil is so black now as a result. just purchased some turbolight 4100

i did notice at one point the o2 sensor hit 0.00v Thoughts? EL falcon o2 sensor will do the trick?

OK so today I've changed the fuel filter just to be on the safe side (problem still exists obviously) Having a look at the sensor check (Power FC) i can see that the o2 sensor reading is high at 1.66V I then figured i'll try switching off the FEEDBACK Control for the o2 Sensor. o2 Feedback ON (default) - holding 2thousand revs sounds very wonky with the periodic splurt of fuel. o2 Feedback OFF - holding 2thousand revs now seems to be running fine again (smooth). A quick drive around the block was a success. Im wondering though, how will my fuel consumption be now that the o2 sensor feedback control is off? Will it make a drastic effect on the fuel/timing maps as they have just been tuned? ... status, i didn't notice the huge difference in the temperatures (AT vs IT), as I haven't had a car dynoed for about 4-5 years lol I will have to get it redynoed to see what it actually is pulling. THanks for the heads up.

This explains why it would happen intermittently when left at idle, and why it might 'correct itself' with WOT. I will have to inspect the damn thing tomorrow.

Thanks for the prompt reply Paul. There is no check engine light at all. The fuel pump is a walbro pump, I will have to look into its state of health tomorrow, however Im not sure it would cause a 'periodic' issue, would you agree? The AFRs just drop intermittently and return back to normal as it pleases. I will run an extra earthing wire tomorrow for the ECU. Hopefuly its only an earthing issue.. Has anyone heard of anything like this before?

I've had my car (1998 R34 GT-T + Power FC + 3.5" Exhaust turbo back + GTR intercooler + K&N Pod Filter + Walbro Fuel Pump) for 18months now and have had an insignificant surging problem at idle ever since I purchased the car. (Read on - gets worse) (Background info - The timing belt was claimed to be changed by the previous owner at 44,000km, which was 30,000km ago) I finally decided get rid of the bleed value it came with (eekk!!!) and have recently installed a Apexi AVC-R boost controller to properly maintain the 14psi at full boost (stock turbo). I also have had a trusted turbocharging specialist (popular on supra forums) dynotune my Power FC hand controller as I had altered the timing map myself over the last 18months to completely eliminate pinging that was occuring on boost due to a terrible tune it had when i purchased it. THE ISSUE IS On the dyno an issue arose by where the power fc or prehaps a sensor will lean out the timing map by where the air/fuel ratio of 12.7 will intermittently increase to as high as 19 all on its own and then return back to normal. (very similar periodic behavior to the "insignificant surging problem" I was having pre-tune, however now that the car's tune is pushing the limits of its performance the "insignificant problem" is now very significant in the sense that I would usually need to switch off the car or give it WOT to correct the problem of the leaning out (It feels like a dog to drive when its in that state) The timing belt was not an issue as we adjusted the timing belt adjustment bolt on the dyno yet it still did the intermittent leaning out problem. Because it comes and goes randomly I am having major issues diagnosing it. What are your thoughts? Could a faulty sensor be responsible for its periodic leaning out behavour? Power FC at fault? Please Help!! DYNO RESULTS (for your interest) The dyno results (done at NT Performance (Footscray, VIC)) are attached (before and after) You'll notice the blue line has two dips in it. One very noticable at the 115km/h mark and one at the peak power of 235rwkw due to a slippery clutch which only started happening on the dyno due to the freak power the engine was able to produce thanks to NT Performance.

hey good luck with the sale. Try selling it on the ford forums

I've just recently bought a R34 GTT and would like to get rid of the bleed valve the previous owner has installed, and replace it preferably with the Apexi Boost Controller Kit for the Power FC that the car already has. Apexi Boost Controller Part number 415-A013 for R34 GTT Let me know. Thanks!

yeah thats right. No more chime for lights left on and door open. I've also made a relay (help from my brother) for my lights to switch off automatically when the ignition is off. So i need not worry about lights being left on.

Cool thanks i just did it!!!! fantastic! U don't need to remove the lower panels - only the steering wheel cover Just remove the steering wheel panel (Start from STEP 2), to get to the white connector and disconnect it. Only need a philips screwdriver for the job.

Just looking through the repco catalogue online Click here to 'Lasoo' the repco catalogue Repco have a 20% OFF sale on PERFORMANCE oils - MOTUL included!!!!!!!! The sale ends in 6 days .. i.e. 24th Dec I'll be buying some motul chrono 300v based on my research (Royal Purple a close 2nd place) for my R34 GTT that i pick up tomorrow!!!!!! So excited!!! I'll be sure to post pics. Its running 200rwkw P.S. Please welcome me to your boards! i've come from a Ford I6 and more recently a Lexus is200, so a massive jump in performance, but as you can tell i love my straight sixes!

Every 50,000k's.