rb25det problem help

[mateusz240sx]

ok so i have a rb25det and my problem is

the turbo makes the boost but the car does not go fast it feels like N/A

and at higher rpms it hesitate

what could it be timing,

i checked the spark plugs

need help fast

[PTR33]

More info will help get better answers.

How many km's has the engine done?

What boost are you running?

What are the spark plugs? (brand/heat range/type) and how old?

What fuel? eg octane rating.

Have you done a compression/leakdown test?

Is it in a skyline of is it a heart transplant into something else? if so... Are your support items up to scratch? fuel pump, intercooler and plumbing, etc

Stock or aftermarket computer?

How much power is it making? a stock RB25 should put down about 170 rear wheel horsepower. mild mods and 10 PSI about 220-230 RWHP.

If you can supply this info it will make it much more likely that one of our gurus will throw you some possible answers.

They generally cant be bothered with generic "My engine's sick, what's wrong with it?" questions.

Hope this helps you get the answers you are after.