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Fg Xr6 Turbo...not Making Expected Power


fgxr6t89

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  • Member For: 12y 3m 14d
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  • Location: Melbourne, South East.

Hi,

Hoping someone can shed some more light or point me in the right direction here.

I have a FG XR6 Turbo auto.

My car made 312rwkw with the following mod list:

  • 4" dump - 3.5" turbo back exhaust
  • Cold air intake (pod enclosure)
  • Larger intercooler
  • Rebuilt turbo
  • 12 PSI Actuator
  • id1000 injectors
  • Walbro 400 LPH in-tank fuel pump
  • Intercooler piping w/muffler delete
  • Valve springs
  • SCT XCAL 3 tuned on 98

The tuner said the car was pinging up high so he had to lower the boost and couldn't add as much timing.

He even tried adding octane booster to see if it would help.

I would have thought with the mods mentioned I would expect to see 330 - 350rwkw.

Does anyone have any suggestions or thoughts?

Cheers.

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  • Im the one and only
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  • Member For: 19y 11m 9d
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Not bad power.Each car can be different as I found with one of my cars and dyno,s can be as well..

Put up a pick of your dyno sheet.

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  • Member For: 18y 10m 3d
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  • Location: Brisbane

Mine went 300 exact same mods except valve springs. Another FG went 350 same dyno but the tuner was really leaning on it. Anywhere from 310 to 335 is about right depending on the dyno as has been said.

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  • Member For: 13y 1m 12d
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When my ute was tuned to 300 atw, the tuner also had issues with early detonation, so much so that he asked several times whether I was running bp98 or not.

Then when I got the GTX tune, no detonation issues at all, but by that time I was just running any old 98.

Who knows whether it was fuel related or not, but it always bugged me that I'd always bought the (supposed) good stuff.

You'd expect that with a full exhaust, you'd be able to max out that stock turbo, but what that max out number is would depend on a few factors.

But I wouldn't think you'd get to 350 unless its an F6 turbo or you're using E85.

At 312 though, I bet it's still a beast !

Edited by Boganspeed
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  • Member For: 11y 7m 25d
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Power sounds about right for a standard turbo fg xr6 turbo though you mention a "rebuilt turbo".

Rebuilt to what specification exactly ?

what brand of intercooler are you using?

Ported housing bigger flapper?

What they said...

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