Ok, recently i removed my zpi stage 1 kit to take a trip to michigan from chicago. all went well. ran perfectly stock. i just put the kit back on about 2 weeks ago, and everytime i got into boost i heard a loud whistle. so i decided to do a boost leak test and i heard air escaping out from somewhere near the throttle body, but cant find it with soapy water. i literally sat there for hours trying to find it....im stumped. i checked the TB coupler, brake booster, injector seats....everything. and still nothing. what am i missing??? i blocked off the line going to the VSV, so its not that.

 

u do nething with the intake mani? idk what bov ur running but check the oring if its an hks. other than that i really dont know. thats kinda odd.

 

check for a crack on the manifold

 

air can escape from the vc vent via the pcv valve (thats if the pcv is gumed up or just worn out). also air can escape from the vsv and into your fuel tank. thats why I plug those two things before a boost leak test. If its not those things i mentioned then you have a leak someplace on the kit or perhaps the valve body is leaking from the flange. Just an idea. good luck!

 

found it. huge crack in the intake manifold on the underneath side! great....this will be a fun weekend. how the hell did i break that?? lol

 

Grimlins

Sent from my DROID incredible

 

time for a weapon r intake mani
the rainbow finish just says something about a mans engine bay

 

you wouldnt be the first

 

haha i wish i had the money to dump into one of those. but, i have llike 4 stock manifolds in storage, so ill put one to good use!

 

get it ported

 

thats not a bad idea. but then i'd definately have to retune

im sure it wouldnt even cost that much since its plastic lol

 

if u do port it lol let us know if its any better haha

 

will do! i might just do it myself and see what happends. i have plenty of back ups. ive ported a few t25's in my day. im sure it couldnt bee too hard!

 

To the OP... I think I have the same issue... When I go full throttle and build boost its like it will just stop building boost and release the boost that was building. Is that what was going on with yours?

 

its definitely a boost leak. have you boost leak tested your car? if not, id start there and see what you find.