Jump to content
SAU Community

Recommended Posts

Hi Guys,

Just hoping someone can point me in the right direction.

I've got a 96 R33 GTST with K&N Pod, 3" Zorst, BOV and FMIC with boost around 11-12psi (done by a Turbosmart manual bleeder value).

When i go to accelerate (overtaking on the highway) you can hear the pod filter etc going crazy sucking in air but the car doesnt really take off (it used too and it isnt just that i'm used to the car.. i've had it for 2 years and i know somethings wrong). It will take off but struggles and it surges and then hits flat spots and then surges again all the way up the rev range. Seems like something is holding it back.

I do have dud coils but i have taped them with electrical tape and they seem to be ok for a $10 fix (they are really bad without taping).

I have cleaned my AFM once before when i had a very similiar situation and it seemed to have resolved the problem but i dont want to keep getting this problem. I've only driven the car about 2000kms in the last 6mths (also since i cleaned and re-oiled the filter).

Also when travelling on the highway and going to over take (whether in 4th or 5th gear), if i just hammer it, my car cuts out (like the fuel-cut comming in) but if i slowly climb there is no cut out.

If anyone can suggest where i should look at, i'd appreciate. thanks

well the cut out in 5th gear is rich and retard mode. only way to get rid of that is either new ecu or wind the boost down.

how old are your spark plugs? and what type? that could be part of the problem.

Hi,

Thanks for the replies.. Just wondering why when i overtake i 4th or 5th and i slowly put the pedal down it doesnt cut out but when i plant it, the fuel cut comes in... could this be because of a bad bleeder/boost value?

Also, i havent changed my sparkies in a while so maybe i will this weekend and i'll gap them.

Anyways, thanks guys again.

wouldnt think the boost controller would have anything to do with the problem. It will just be fuel cut coming in...R&R as stated before, a/m ecu will fix it. Generally winter will bring upon boost spikes and induce R&R more so if you have the boost set right on that threshold and the occassional squirt mixed with colder climate will bring upon that change.

Yer im in a similar situation dude, with the same b/c as urself.....try winding it back a touch....

Originally posted by r33 racer

Generally winter will bring upon boost spikes and induce R&R more so if you have the boost set right on that threshold and the occassional squirt mixed with colder climate will bring upon that change

Exactly wat i thought! :laugh:

the way that r&r works isn't by boost pressure. it isn't just a case of once it reaches a certain pressure it cuts out. that is why it won't do it if you ease the throttle on.

but yes the cold weather has an effect on it. just wind the boost down a bit.

its based on a ramp scale. i started a thread about this to find out exactly.

what happens is that the ecu has a set maximum airflow per rpm. so if it exceeds that amount it cuts out.

for example, the airflow at 14psi might be within limits at 6000rpm, but not at 3000rpm, so it cuts out. i will draw a graph to illustrate it when i get time.

haha no...i dont think so...try winding the boost down and see how it goes mate. Take things one step at a time...you never do 5 things to fix one problem or you will never know what fixed it.

Thats also an idea below...try some contact cleaner through your afm.

Edited by r33_racer

I didnt notice this problem until last weekend when i went for a long drive and needed to overtake. But the period after re-oiling, i didnt have any problems.

And yes i would love to buy new coil packs but i dont have the money yet.

Well, i'll wind the boost down first and get new sparkies and have em gapped.

Then i'll see how it goes.. I'll clean the AFM anyway.

Thanks guys.. will keep you posted.

Could be a number of things (as usual) but coil packs usually fluctuate when faulty under load which is what you are experiencing when trying to overtake. Which also explains, that when you decrease the amount of boost you are running that the problem will go away.

Theres plenty of advice throughout these forums to detect faulty coil packs.

Hi All,

I've changed my plugs with NGK BCPR6ES (i think that's it) which are standard gapped to 0.8mm and wound down the boost to run 10 or 10.5 (needle on boost gauge is half between 10 and 11). The 33 seems to run quite well.

However saying that, the old plugs didnt look to bad either but who cares when the car is running much better.

thanks alot.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • I'm not up to date on the latest, but for basic modifications like pod filter, lower springs etc you can get a modification permit at the time of inspection.  For more serious modifications you will need engineering.  Intercoolers used to fall into the mod permit rule but its been a long while since i looked it up.   Either way you will be able to get it registered, just a case of $300 vs $3k . 
    • Hi everyone! I’m the new owner of a 1996 R33 GTS-T, I’ve purchased this car over from Queensland and brought it to Western Australia and I’ve found that there is a hole cut out in the engine bay for the FMIC that enters into the wheel well (fender liners are in the boot). For anyone that has had to get their car over the PITS here, will this be a major issue?   
    • Yeah I've spotted this one too, whenever it's lotto superdraw week and I'm browsing car sales dot com for my new ride They must be dreaming, maybe it's worth 150k for the link to Brock?
    • 100% accurate!  We are a pack of know it alls....  But, I bet people go to you when they have a problem! I've been on a bit of a clean up rampage too over the past month!  I've thrown more shit in the bin over the past 2 weeks than I have in the past 3 years combined! Anyway, it's all good fun being different! My wife sometimes does not agree!  
    • ADHD in all form isn't about "can focus, or can't focus" or is hyper active or isn't etc.   It's all a dysregulation. Either time feels to be stationary, or time just vanishes in a split second. We are either under focussed on the task at hand (as we're over focussed on our surroundings) or we have no idea an atomic bomb went off beside us as we're so hyper focussed and locked in on things.   Not to mention the rapid fire thought process. What it takes a "normal" process to think up a solution to a problem, ADHD will be able to give you 5 different ways to solve the problem, and the pros and cons of each. While we can be highly impulsive and lack the ability to "control ourselves" we can also become paralysed with the inability to make a decision for ourselves. While most of us have an OCD like requirement for perfection, we lack the ability often to remain focussed to get things to a perfect state. Those with undiagnosed ADHD as adults, can often find the last part actually stops them ever attempting to do things that they have the ability to do, as the reasoning is often "if I can't do it perfectly, it's not worth doing"   As for projects... Ha ha ha, I still need to take the other half of my wall trim down in the Fiance's office so I can paint it. Need to finish digging and running the back yard drains, my R33, getting the Ninja bike registered (now being sold), the moped project, fixing either of the lawn mowers so they're reliable, along with a myriad of other things.   It's why I've been going through lately and just being brutal and clearing projects off that I won't actually ever complete. IE, moped will go to the tip, or be given away, bike is being sold, Subaru project being sold, some parts for other projects given away. Or I've been making myself focus on one thing at a time, by ticking off the smallest quickest ones first.   There's also a reason by our mid twenties we seem to be "know it alls", as we've all been down some of the weirdest and oddest rabbit holes when you follow the dopamine trail. It's often also why we're more a jack of all trades, but not a master of one.   However, pretty much all of my hobby projects, in one way or another, all come back around to automotive. That's my zen area.
×
×
  • Create New...