i am buying a ef civic hatch with a gsr block and b16 head its slammed on tokiko blues and nuespeed springs has msd ignition aem intake and some other bolt ons now i heard this was a sick *** setup is it true? but now when i start the car and put it in nuetral and let it idle it jumps and drops from 1k to 2k back down to 1k rpms ALL THE TIME!!! does anyone know what this could be a friend said it was a vaccum line problem can anyone please tell help me asap any info would be awesome

 

ttt please some one help me i know someone knows what it is

 

fast idle thermo valve

it shows you how to fix it on the faq section

 

thanks imma go look now thanks

 

After I did my swap it did that. Turns out it was just the Idle Screw! It's a little flathead screw above where the intake tube meets the intake manifold. Mine was a little loose so i tightened it down and it is perfect now!

 

probably the fitv. what intake manifold are you using?
My car idles great w/o the fitv. i think you should remove it.