i got a 99 civic si with a drag gen III turbo kit but i upgraded to a precision sc50 acouple years ago and basically built my motor and now runnin 18psi..

last night i was drivin and i punched it and my tires are spinnin and i hit about 6krpm and i bascially just lost all my power.. i didnt really hear anything break.. so i just kept drivin and my car was basically stock... no engine light came on or anything. my car just woudlnt built boost and just felt like i was driivn my car back before i got the turbo kit.. it was to cold and night time so i didnt look under my hood.

any ideas on what it could be?

 

check your piping. i would bet it popped off somewhere

 

IC pipe.

 

if you are using the drag piping, there are no burrs or flares, or beads to hold the piping on (unless they have changed it sonce i got mine in '00).

chances are you popped off an intercooler pipe.

 

yea, check your piping. if that looks good check your couplings

 

check the couplers to see if they ae poped off;

pressure test;

inspect WG.