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Hi I have just converted my rb25de to a +t and have a little problem.

When i took it for a drive to see if it all went as soon as I hit 5psi the car shudders big time and wont go over it. it is also on boost all the time when i was cruising under the 5 psi mark. I think it is an over fuelling problem becuase it pumps the black smoke out and I did a little skid which went to 7-8psi and it shot flames out the back.

I have a fmic

3in exhaust

extractors

gtr injectors with a 6.8ohm resister pack

CHIPPED ECU

wasted spark

new spark plugs

any ideas. I have cleaned the afm which was a problem with the engine chasing at idel before

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https://www.sau.com.au/forums/topic/227877-rb25det-over-fuelling-problem/
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r32 or r33?

im confused @ extractors ... are you using the std rb25det exhaust manifold ?

is the chipped ECU tuned for the GTR injectors? they are 440cc from memory so will be giving alot more fuel than std ones.

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