Whats Going On

[Proximity Motorsport]

Hey,

I have a R32 GTS-T RB20DET and the mods its always had is...

• High Flow GCG Turbo running 10psi
  
• Custom Made 3" SS Mandrel Turboback Exhuast
  
• Walbro 500hp pump (installed 2005..... time to retire?)
  
• Fuel Pressure Regulator
  

I had it dyno'd and it made 150rwkw and was told its lean in high revs.

Recently i installed

• Plazmaman Forward Facing Plenum
  
• Plazmaman 2.5" Piping Kit
  
• 600x300x75mm Hybrid Intercooler
  
• Custom Made Solid G/box mount
  
• Cusco Oil Catch Can with appropiate Oil breathers
  
• Still Running 10psi
  

After i did this work i reset the ECU while car was warm and then started it up and revved it right out in each gear straight away (told to do so)

Now when i put my foot down in first gear it sounds like limiter at any revs over 4000rpm and just doesnt pull hard. Then all other gears are fine to flog right out to limiter... unless i am going around a corner, mainly left turns. If going around a left hand corner in second and touch accelerator slightly harder than normal at only around 2500rpm it stutters and doesn't go anywere. This was with a full tank of fuel too

Im just wondering what this could be... Boost doesnt start till 3000rpm and its on full at around 4500rpm. Engine has 150,150,150,145,145,140psi compression, brand new NGK normal spark plugs, serviced with new oil and oil filter and fuel filter 4000km ago.

I'm thinking maybe fuel pump is getting its age on?? How long would it usually last? I have a APEXI Power FC D-Jetro for an rb26dett on its way and i got a field one touch connecter that a mate is modifying so that this ecu suits my car. I also have gtr injectors and am going to get rid of the fuel pressure regulator. Also have custom made 3"-4" ss intake made to delete airflow sensor

If you have any ideas please let me know, at first i thought maybe fuel cut in first gear but now recently its doing it at low revs around corners.

thanks in advance

Edited January 5, 2008 by choku_dori

[R31Nismoid]

Your running a stock ECU.

So basically the same as the other 15 threads in the past 4 weeks

Until you get a tune you dont know where your at.

The ECU will be having an absolute FIT at the mod's you've done. Get a proper ECU, tune, dyno session and THEN see if you have problems

Thread over.

[MBS206]

Sounds like fuel pump

[Proximity Motorsport]

see thats what im trying to figure out thinking maybe fuel pump is f**ked.. i wanna have evrything in befor i fork out for a tune.. maybe even coilpacks have shit themselfes.... i was just wondering if anyone has had this happen to them.. cause kinda seems like something is loose as in around corners its not very happy.

As i said i have a d-jetro fc on its way its just there is an 8week wait from japan and nengun just sent an email saying there has been an extra unexpected delay

[Tangles]

an safc should have been fitted ages ago. the stock ecu would be having nightmares at this stage, good for you re the powerfc. hope you get it soon

re the coilpacks have you tried siliconing them up, ie hightemp silicone sealant all around each coil pack works wonders. but if you are planning on running 1bar+ then perhaps its best to start saving for the splitfires. but still, silicone costs $10 so that should be the first thing you get ready pre-tune.

with the fuel pump, id say its fine... most likely the stock ecu having a meltdown, but then again its walbro- from allllll Ive heard (hearsay) you cant trust them. bosch 040 for $200 would be worth a go, sell the walbro for some beer money.

[paulr33]

the pump you have will be ok - get a real ecu & a real tune

should make around 250rwkw and drive pretty sweet

until then - dont bother trying to fix it or make it go fast, because it wont