where'd my vtec go?
 

ok so, i've got about 90% of my charge piping done, and i've got my FMIC to IM all welded up, and i've got a bend on the inlet of the IC with my filter on there (super cold air intake ©). so, my intake is now a filter near my exhaust mani, bend around to a intercooler, up through the stock intake hole, to the throttle body.

now, i figured i might feel a little different when i get on it, right? so im on my way to my homies house after finishing up and i decide to try a little 3rd gear pullin. i get to 4.4K and VTEC comes in and out like a spaz (sounds like someone hitting a drum) and im like wtf.. and just let off. then just now im my way home, i went from a stop, and tried some 1st gear VTEC. same thing- rev's up to 4.4K, VTEC spazes then once its done (like 5k) it accells without VTEC.

wtf? checked my oil, checked my VTEC solenoid plugs, dunno if it's throwin a code since i don't have an O2 in, and it's ------- cold as balls out. not gonna bother checking that now. any ideas?

cliffs: my N/A intake runs through a FMIC, for a "super" cold air intake, now VTEC doesn't want to stay engaged

Re: where'd my vtec go?
 

check wiring from ecu, check plugs on harness, maybe an intermittent connection?

Re: where'd my vtec go?
 

is it tossing any codes? your vtec pressure switch could be faulty. same thing happend to me i replaced that and vtec worked agian. I was gettting on the car and about 6300rpm vtec would shut off then come back on around 7800. fixed my pressure switch and it works fine.

Re: where'd my vtec go?
 

ECU/wiring hasn't been touched in hella.. i can't think of any reason for it to ---- up. its a OBD1 D Si harness, with an OBD1 B motor so there's nothing ghetto besides the single wire for my knock sensor

try switching out my vtec solenoid? sucks i gotta work first thing in the morn.. (but that holiday pay is oh so sweet, double and a half :6 ) im gonna try to check for codes before I leave

Re: where'd my vtec go?
 

you cant make air colder by useing more of the same temp air :P

Re: where'd my vtec go?
 

yea, i kinda figured that, but we were in a hurry to clean up and had most of the stuff tightened down.

low end just feels the same, only more sluggish throttle response :P

Re: where'd my vtec go?
 

Everbody knows Madd JDM third gear vtec only comes on in 3rd gear, :1

Re: where'd my vtec go?
 

dented pan? i had a similar problem and changed my pickup and banged out my oil pan...problem solved

Re: where'd my vtec go?
 

so let me get this straight. what your running now is partial charge piping through your fmic and then have a pipe with a filter attached to it? how about take off the charge piping before the fmic and take it out for a spin and see what happens.

Re: where'd my vtec go?
 

oil pump? my buddys gsr did that. vtec would come on sometimes, then the oil pump went out and he spun a bearing