R33 Gtst Surging Under Heavy Boost

[aphexcloud]

Hi all

new to the forums and owning a skyline(first one)

i had an issue the second day of ownership was very unhappy jan,

but it turned out to be that the previous owner had decided to use carby fuel hose from the pump to the top of the fuel tank instead of using proper efi hose

and it burst in the tank, had that fixed and now when i am at WOT i feel a bit of surging (the car is manual(converted)) and is running 12-13 psi of boost (bought like this)

std intercooler car came with a exhaust haven't had time to measure or check brand

i am going to try turning down boost before exhaust wheel shits its self but wondering if any one had any other ideas as to what could be causing this

regards

aphex

[Plattsy]

surging is very vague. but at that psi.....

its r n r.

dial it back t ten reset ecu. insert 98 fuel. should run sweet!

[Dose Pipe Sutututu]

describe your surging? I think you're mistaking it with R&R.. the car just hits a brick wall and comes back to life and hits another brick wall...

Too much boost buddy for the stock ECU, it just falls into the wrong cells and bam massive timing pull. I even get that at 0.8bar on cold nights, I just run 0.7bar all day

[AngryRB]

Hi all

new to the forums and owning a skyline(first one)

i had an issue the second day of ownership was very unhappy jan,

but it turned out to be that the previous owner had decided to use carby fuel hose from the pump to the top of the fuel tank instead of using proper efi hose

and it burst in the tank, had that fixed and now when i am at WOT i feel a bit of surging (the car is manual(converted)) and is running 12-13 psi of boost (bought like this)

std intercooler car came with a exhaust haven't had time to measure or check brand

i am going to try turning down boost before exhaust wheel shits its self but wondering if any one had any other ideas as to what could be causing this

regards

aphex

are you sure it is a stock turbo? could it be something else eg a 2876?

[petero'nell]

stock turbo would be snapped in half before it could reach its surging limit. might've been afm dirty or miss firing.

[AngryRB]

stock turbo would be snapped in half before it could reach its surging limit. might've been afm dirty or miss firing.

The type of surging ive heard is not mistakable, has a distinct sound, take the intake pipe off to see if the compressor wheel has left a grove in the cover, my brothers skyline turned out to have a gt2876, it has a line carve out of the compressor cover.

Maybe inspect the fuel tank for debris and change fuel filter a few times.

[aphexcloud]

cheers all for the reply's

i have dialled it back to 10 psi and it has improved but is still there.

When hot the vehicle hesitates/surges i have tried 98 and 100 ron fuel

i thought it might be a battery problem so i replaced to no avail

will pick some contact cleaner for the maf and a fuel filter as well as some sparks tonight

mods: sh*$y drift boost controller, stock BOV, stock intercooler, pod filter

PS: the vehicle smells very rich after snapping the throttle open

regards

aphex

[Moodles2]

Definitely change the fuel filter asap, it might be blocked with rubber debris from the blown hose.

[hypergear]

maybe exhaust cam gear is retarded or out a tooth?

[Plattsy]

come back just under 10, could be spiking to over ten and still hitting r n r....

[aphexcloud]

cheers all,

i have cleaned maf sensor with ecc it improved the issue a little but it is still there.

any 1 have any ideas on how to free the stuck rubber hose on the fuel filter (tried bottle nose pliers but don't want to munch the fuel hose) it looks as if it has been on there a while

i also have injector cleaner but dont want to use it till i have a fresh fuel filter in there.

have found the issue is evident in low gears under accel (any) once in 4th-5th at 80km/h-100km/h it will pull fine

ps. what does RnR stand for?

regards

andreas

Edited December 18, 2012 by aphexcloud

[GTSBoy]

google R&R or RnR and see for yourself. What it basically means is that R33 ECUs are emo and you shouldn't add much boost to them.

[aphexcloud]

i wasn't looking for an explanation.

i was wondering what does the Acronym mean... so i could do some research on it

Edited December 18, 2012 by aphexcloud

[Plattsy]

rich and retard.

[Dose Pipe Sutututu]

rich and retarded, like most celebrities

[GTSBoy]

i wasn't looking for an explanation.

i was wondering what does the Acronym mean... so i could do some research on it

http://lmgtfy.com/?q...esaustralia.com

5th hit, and that's using the less common RnR version rather than R&R.

Edited December 19, 2012 by GTSBoy

[MagicMikeZ32]

cheers all,

i have cleaned maf sensor with ecc it improved the issue a little but it is still there.

any 1 have any ideas on how to free the stuck rubber hose on the fuel filter (tried bottle nose pliers but don't want to munch the fuel hose) it looks as if it has been on there a while

Cut it off and replace it.

[aphexcloud]

@gtsboy

R&R is rich and retard.

which was all i was asking not for a description as to what it does i am capable of reading and understanding what is written

cheers

[GTSBoy]

Yeah, my point was given that you had been told it was R&R, you could have googled it for yourself in less time than it took to ask. I'm just trying to discourage the spoonfeeding mentality on forums.

[Plattsy]

Yeah, my point was given that you had been told it was R&R, you could have googled it for yourself in less time than it took to ask. I'm just trying to discourage the spoonfeeding mentality on forums.

why isnt that what we are here for? to offer help, support and advice to people that dont know very much.

god knows what you did before google my friend.