Jump to content
SAU Community

horrible performance

netrati

By netrati,
in Engines & Forced Induction

 Share

Recommended Posts

netrati Collaborator

netrati

Posted
Posted

Hey I got a few questions for you guys. I just bought a 1989 GTS-t. It has aftermarket exhaust, intercooler, intake, bov, and tuned computer. The deal is it idles kinda rough and when you let off the gas after revving it up the RPMs drop way low like 450 or so, it almost stalls. Another thing is horrible, I mean awful performance. I tested it from 0-100km/h and it took 8.869secs!!! Not anywhere close to stock! I'm hoping that it needs a tune-up really bad. Maybe a fried spark plug or a bad ignition coil. Could one of these things cause the performance to be that bad?

Link to comment
https://www.sau.com.au/forums/topic/19141-horrible-performance/
Share on other sites
SLY33 Mentor

SLY33

Posted
Posted

your nearly stalling problem after revving it up is due to the BOV. the spring tension needs to be increased a bit, simple fix if your bov is adjustable. Sounds like you need to get a good tune

- theres no way you can be in japan?! why on earth would you need advice from australia?

And you no write broken englis.

BigDatto Proficient

BigDatto

Posted
Posted

check this thread:

http://www.skylinesaustralia.com/forums/sh...s=&threadid=408

curiously, changing to copper plugs gapped @8mm fixed my stalling problem - so it seems it could be any one of three issues

BOV, fuel pressure or in my experience, plugs !

must be difficult for you not speaking Nihongo...

Good Luck with it.

Steve Grand Master

Steve

Posted
Posted

netrati,

have a look at this thread: http://www.skylinesaustralia.com/forums/sh...s=&threadid=408 could also be the problem at low revs.

Plugs never hurt, esp as NGK coppers are about AUD$20 a set, clean your afm, change the fuel filter and reset the ecu - different car (hopefully) :)

Nick Rookie

Nick

Posted
Posted

I had dramas with the previous owner's adjustment on my Blitz BOV, a simple tweak and she was running sweet. But now that I've just plugged in the Power FC (yet to be tuned), yeah I get higher revs when first turning the car on (like 1400rpm), but it rarely comes back down to where it would ordinarily idle wehn warm on the stock computer (700rpm). And when decelerating coming up to a roundabout for example at 30km'h in 2nd, as I exit the roundabout my revs will rise and I can actually increase my speed without touching the accelerator. I know the base program is not so great - typically running rather rich - but is the car feeding more fuel to the engine and at the same time being misread as throttle when the clutch is out and my foot's off the accelerator? WTF?

The mind boggles. There I go, having a spit when all it probably needs is a tune...

Anyone ever experienced anything similar though?

Cheers!

bryanlee38 Mentor

bryanlee38

Posted
Posted

OMG. u're in japan! Can u get me some parts? - I hear 18" rims r only $400/$500 there 2nd hand. I want some! lol.

Back to ur question. my bov did the samething. after like 2 weeks, i reset the ecu once too, everything was fine. Guess i was just lucky. anywayz how about those rims :) I'm pretty sure there will be a few guys in Japan who can help u out - $ is an universal language of requiring their services.

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • 677_GTR
      R33 GTR running -9 with no tune

      By 677_GTR · Posted

      Thank you for the feedback bro. Looks like it’ll have to stay off the road till it gets an ecu 
    • GTSBoy
      R33 GTR running -9 with no tune

      By GTSBoy · Posted

      Only if you do not You will not be able to drive it with any serious load without risk of it pinging, which will either slowly or rapidly kill it, depending on how bad it is.
    • 677_GTR
      R33 GTR running -9 with no tune

      By 677_GTR · Posted

      Hi guys, I’m new to the GTR scene. Picked up an R33 GTR earlier this year that needs a lot of love. I’ve been going through the hot side, changing all the gaskets and while it was all off I managed to score a set of -9s. It still had the stock ceramics so I was pretty happy to get the 2860s.  I live in a small country in the pacific with 0 performance car scene. No dyno’s no performance parts, let alone stock parts for a skyline. I order everything from Australia and do it myself. This means I’ll be running the stock ECU. Maybe down the track I’ll get an aftermarket set up and do a remote tune.  Will the car run -9s on stock tune safely?  I have a very heavy foot so I really hope so 😂   thanks guys   
    • Duncan
      Leaking Rear Subframe Bushing?

      By Duncan · Posted

      perfect, no rush to address the leaking bush then, it's not doing much/anything
    • GTSBoy
      Does RB25DE Neo lower intake work with RB25DET Neo Upper intake manifold?

      By GTSBoy · Posted

      I'm not sure if it will bolt up, but.... I'm reasonably sure that the ID of the runners is somewhat smaller on the NAs. So it probably wouldn't be a good match at the flange where the top and bottom meet. So that would be a reason to not do it. And the skinny runners would be the bit you're keeping, which would be a reason to no do it. You'd want the big runners if you were doing any work to swap stuff. Why not just use what you've got, like nearly everyone else who has +T'd an NA? You don't need or want the TCS throttle or other stuff that is specifically DET inlet/crossover.
×
×
  • Create New...