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Very simple...

Lag is the time it takes a turbo to come onto full boost; so as an example you may get full boost @ 5000rpm so your lag time is the time it takes ur car to go from 0rpm to 5000rpm

ways to fix lag;

-smaller turbo

-cams

-better flowing head

-ebc

-antilag

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ill take 2 thanks Az.
make them the big ones, and az, i need them by tonight

hahaha i feel like im in the movie.

Sadly there is no overnight parts service that does not cost less then ones left nut. :devil:

To put it simply.

Lag is the process of building up air pressure/flow mass to increase shaft speed within the turbocharger to generate positive pressure.

Until the desired boost pressure is met this is referred to as lag.

To decrease lag, smaller and lighter internals can be used within the turbocharger to increase shafts speed. (smaller turbocharger)

Lag means horsepower though :P

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turbo lag comes from the compressor not being efficient until it reaches a high speed, say 50,000+ rpm? when the compressor isnt spinning fast enough it doesn't produce much positive pressure or airflow so the engine just is burning whatever air comes in. as the compressor gets faster and faster from exhaust gas/engine load the compressor beings to "compress" the intake and stuff more air in.

when there is little exhaust gas the compressor doesnt spin fast enough, so its referred to as lag. common for the skyline range is nothing before say 2500rpm. past this theres enough exhaust gas to wind the compressor into its effiency zone and usually get around 10psi positive "boost" pressure before 3000rpm.

as engine displacment and type changes, along with turbocharger technologoy, engine tune etc so to does the engine lag. so there are a few things you can do to reduce turbocharger lag

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Turbo lag is when you order your turbo and they haven't got any and it will be a two week wait.............thats real lag.

hehe the WORST lag ever. I think we have all been thru that type of lag from time to time. :down:

I am suffering form differential mechanic lag at the moment. it is taking 2 weeks and counting to spool up... :(

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