Speed Cut

[RB32]

Hey guys,

I own a 93 r32 gts-t, mods are displayed as you can see.

(Plugs are roughly 1000kmz old and i cleaned my standard coil packs with contact cleaner not long ago)

I experienced some sort of speed or fuel cut while driving in 3rd gear (flat foot.) Its only happened twice

and both times have been roughly around the 115km/h mark. All of a sudden it stops reving even though my

foot is still down. But once i take it off and put it back down again everything seems to be fine.

My Ecu is remapped and im running 1 bar of boost.

Has anyone experienced this or know of?

Cheers Adrian.

[R31Nismoid]

Could be anything mate.

Coils could be going

Fuel reg on the way out and stuffed plugs

Fuel pump moving around

Crank sensor or ignitor pack showing age

Its trial and error with a 15+yr old motor.

Either way you cant do 115km/h legally anywhere - so behave!

[r33cruiser]

im sure he wanted the speed cut for 'track' work right?

[RB32]

well i mainly did it for drag and its only done it twice so something is definitely triggering it off at times.

Cheers...

[teng]

Either way you cant do 115km/h legally anywhere - so behave!

We can do it here, on the highway, speed limit is like 100km/h but no one drives that slow. Seen subaru's doing well over 270km and i personally drive like a maniac at 220km max (have to find out what's stopping my speed lol) on the highway and over 100km on normal street. Everyone here does it so it's farely common. Even my mom drives over 140km in her corolla 1.6 sedan lol.

It is illegal but the police doesn't seem to bother that much on the highway.

Attached is my '94 Sunny 1.5cc Carb GA15DS Engine doing 190km.

Attached '96 R33 GTS25t doing 220km

Edited March 7, 2008 by teng

[dan_the_man]

Either way you cant do 115km/h legally anywhere - so behave!

We can do it here, on the highway, speed limit is like 100km/h but no one rives that slow. Seen subaru's doing well over 270km and i personally drive like a maniac at 220km max (have to find out what's stopping my speed lol) on the highway and over 100km on normal street. Everyone here does it so it's farely common. Even my mom drives over 140km in her corolla 1.6 sedan lol.

It is illegal but the police doesn't seem to bother that much on the highway.

I'll try telling the local police in Australia that next time they pull me over.

OP wats the condition of ur AFM like?

[teng]

My AFM is stock ECR33 atm.

[dan_the_man]

OP = original poster.

[RB30-POWER]

i tried to run my bros car off the clock the other day (private road) and was suprised when it hit a massive cut at 180clicks but was only at 5500rpm in fourth gear.

so it can't be rev limit, has no speed limit set or speed signal even hooked up for that matter and has rich and retard limit removed and air flow meter that is no where near peaking out.

my verdict is it must have been the standard rubber inlet sucking close, all i can think off for such a massive cut off.

if you have standard ecu but, could be anything to do with that.

[dan_the_man]

the rubber piping folding in wouldnt cause it to cut out... just have less power.

[RB32]

my AFM seems to be in pretty good nick from what i can see anyway.

like i said it has only happend twice

cheers