Hello and welcome to 3sgto.org

[TTW]

Hi everyone,

I have a 1991 Mitsubishi GTO Twin Turbo, which misfires/chokes/hesitates when accelerating moderately around 2500-3500 rpm? (it performs fine under heavy acceleration?!)

I have already replaced plugs, leads, coil-packs, earth straps, air filter, dump/blow off valve, and vacuum hosing and have tried diagnostics using datalogger software on my laptop.

Whilst the above has improved the running of the vehicle, the fundamental symptoms described above still exist? - I now suspect the issue may be injector, turbo, or fuel pump/pressure regulator related?

The datalogger software enables me to disable individual injectors, and each one impacts the running of the engine which suggests each are running to a certain degree. I have run a data logging session for 40 mins (over a 20mile journey), and the obvious observation when the issue manifests itself is a significant downward spike on the Injector Pulse Width?

- does this suggest a direct issue with the injector(s) or could this be a result of a faulty turbo, fuel pressure or boost leak?

Any help greatly appreciated

[usmceric1]

Well got a 98 VR4, runs good. Had it since 09. Looking to flash tune it. Just registered for my for my first BRG. Very excited.

[dados-stealth92]

This is funny just watch the whole video and rules,and still cannot search forum... Lot of help needed but I guess I does not working. 1992 Stealth base AT-- Grrr I know what u thinking a Automatic. a 500$ can get rolling.

[stealthify]

This is funny just watch the whole video and rules,and still cannot search forum... Lot of help needed but I guess I does not working. 1992 Stealth base AT-- Grrr I know what u thinking a Automatic. a 500$ can get rolling.

I'm not entirely sure what you just said, but you should have access soon. The change takes place after your first post.

[Apex]

Hey been lurking here since the beginning I suppose its time to create an account.

94 3000 GT Base since 2008

[IPD]

Hey been lurking here since the beginning I suppose its time to create an account.

94 3000 GT Base since 2008

so you've been here pre-september 2010?

[slyk]

Hey..new here but have a genuine interest in awesome cars. My first car was a '91 eagle talon Tsi AWD...definitely a sweet car. I'm more into diesels now (VW TDI) but also love 3000GTs.

[b3nickerson]

Hi, I'm Ben and I've owned my 1991 3000gt sl for about 2 years. It's mostly my project car now because my ECU burned up, IAC quit, and ABS pump stopped working all at the same time.

[HKS3000GT]

Hi, I have a white 92 Australian delivered 3000GT which I have owned for 4 months or so.

[TTcanuck]

hello everyone