Gday Again, Still Chasing Issues With My Wgnc34

[lilcrash]

ok so insulating the coil packs doesnt help, just a quick question, is it possible it could be the crank angle sensor??

so after a day of ringing around a crank angle sensor from nissan is $1025.

is it possible to borrow either coil packs or a crank angle sensor from anyone to be sure what it is??

[STAGE1]

Hi

Try fuel pump (APROX $200.oo and a couple of hours to fit) if you are still running the old one you will need a better one to support more boost and power anyway. You have most of the other mods done now

Consider this you are running the same boost but with a bigger FMIC the air is cooler so it is supplying a more dense charge of air to the intake so it will need more fuel to keep the AFR right. If the pump is not up to it the EMS won’t let the engine run past this point hence it feels like a misfire or you are on the revlimiter.

This will be a cheaper job than the crank angle sensor.

I do have the old oem coil packs I took out of my S1 but one is faulty don’t know which one though...... sorry

It is possible to have the pressure tested at the fuel rail if you have the right equipment I think it should about 36-38psi

phil

[lilcrash]

i have considered the fuel pump a few times but from looking at the computer it appears to getting richer as the miss starts and the plugs are always full of shit from not burning the fuel off. i should probably buy a guage to keep an eye on it just to be sure its not just the ecu screwing up the signal from the o2 sensor.

[BensDR30]

FYI O2 signal is disregarded at anything above a slight throttle opening. Not sure about exact % but I'd expect 30% max.

[lilcrash]

it appears to just be an unburning issue, i think i will try a diffrent plug first and see how it goes. is it the bcpr7es or bcpr6es recommended??

[STAGE1]

I use the NGK laser platinum PFR6G-11 gaped at .8 (aprox $20.oo ea)

Put them in and then don't think about them for a year or more

Phil

[_Ryan_]

the 6's gapped to .8mm

[BensDR30]

I'm using the 5's, and I think that they're still gapped at 1.1 (installed early 2005, not touched in the 45000km since)

http://www.skylinesaustralia.com/forums/in...t&p=4401024

Edited February 1, 2009 by BensDR30

[lilcrash]

phil i think you win. i changed the plugs and the old ones were burnt horribly, im guessing its getting really lean really quick. what fuel pump does everyone recomend i get?? is there a bigger bolt in one?? oh and for reference the plugs didnt change anything.

[STAGE1]

Walbro or Sard

I had a walbro fitted early on and it only lasted about 12mths I am now running a sard with a fuel pressure regulator.

Both fit in the cradle of the old one with little modification. Both need to have the wires cut and joined (1 red 1 black) I also had a little problem with the sock on the sard not being at the right angle.

There might be straight fit models on the market now

Phil

[lilcrash]

i will have to see what will be easier to fit. on my celica i had a vl turbo pump and a malpasi rising rate, but i think a malpasi would be a bad idea as the maps would get screwed up with the extra fuel. i think that if i just get a higher flowing pump and use the stock reg i should get ok results.

what is everyones opinion on pumps??

[lilcrash]

performance wise has these.

NISMO FUEL PUMP KIT - STAGEA 260RS WGNC34 RB26DETT $420.00 AUD

Nismo adjustable Fuel Pressure Regulator & Adaptor Option: $180.00 AUD

good/bad????

[Xmetal]

XMETAL - you are exactly right, thats what it does.

Yeah, that'll be your ECU pulling all the timing out. (Rich/Retard)

Greddy eManage should fix that problem. Blue or Ultimate comes down to your budget too.

[KiwiRS4T]

I have a Walbro pump ( they're cheap) and its fine. Apparently there were some counterfeit ones being sold a while back that were dodgy. If you don't want to take the risk get a Bosch (more expensive).

Going back to my original suggestion (SAFC and SITC) even at your level of mods you need some way of tuning your engine... currently you have nothing. If you are short of cash get a SAFC and a SITC and a tune. If you can manage it get a Vipec and you will be set for your current level of mods and anything else you might do.

[lilcrash]

not so much short of cash, just may be looseing my job in the next 4 weeks. so are we voting sitc/safc or fuel pump/regulator?? or both?? one more minor concern, its dropped back into low boost mode.

[KiwiRS4T]

not so much short of cash, just may be looseing my job in the next 4 weeks. so are we voting sitc/safc or fuel pump/regulator?? or both?? one more minor concern, its dropped back into low boost mode.

I am sorry to hear your job is not safe. I would suggest waiting to see if you are still employed before spending any more money on your car. However to answer your question it is likely that you are due for a new pump and in the normal course of events it would be a sensible preventative maintainence move but if you a prioritising your spending try to get it tested first. Your local workshop should have a meter or better still some adjustable fuel pressure regulators have guages bult in so if you can borrow one that would tell you. I would suggest the fpr is not a priority. The SAFC would be the first thing to buy (having satisfied yourself about an adequate fuel supply) and you can get a reasonable tune with conservative timing although an SITC would give you the ability to push the timing at different rev levels.

[loymclure]

again hold off for a while find your self a second hand ECU and get it tuned on the dyno for your car (i recomend emanage ultimate over emanage blue as you might find it hard to find a tuner). im not going to bull sh!t you its going to cost a bit but it will be well worth it.

i got my emanage ultimate second hand for +-$600 or so i cant remember but it came with all the harnesses. i had it installed and tuned for another $500. when you add up the costs of fuel pumps,regs,apexi SAFC,SITC,silicone spray,coilpacks,plugs etc etc you would have probly spent all of that or pretty close to already.

Good luck mate.

Edited February 2, 2009 by loymclure

[lilcrash]

just to add more fun to the situation, i drove to work this morning as normal missing all the way,but on the way home it didnt miss a beat, then i went shopping and it it didnt miss at all so yer im getting very confused

[Whooby]

If it's becoming an 'on and off' kind of problem, just make sure all your plugs and connections are right. Make sure they aren't full of crud or broken clips that may be bouncing. Check for splits in vac lines etc. Things that are free and may solve the problem.

[RubyRS4]

Going back to my original suggestion (SAFC and SITC) even at your level of mods you need some way of tuning your engine... currently you have nothing. If you are short of cash get a SAFC and a SITC and a tune. If you can manage it get a Vipec and you will be set for your current level of mods and anything else you might do.

I have an SAFC2 black edition and SITC both for sale. If you've still got employment, shoot me a PM if interested.

Hope you get your issues resolved