97ek9

-b16a/97' ek hatch-

Today i decided to just screw around and go a lil fast. My vtec engages at 5,500 and goes all the way to 8,400(chipped/tuned) BUT!... when it kicks in, i lose power up top top. Tried it a few times 1st, 2nd, and 3rd and some times the vtec flickers.
The car doesnt throw any codes and i aready checked sensors and hoses. I dont know what it is and its very annoying!
any help please
thanks!

97ek9

no one has any idea on what it could be.................

instrument

it loses power "up top"
where exactly is "up top"

hows your oil.

97ek9

it loses power as soon as vtec kicks in
5,500- 8,200

my oil is good
i change it every 2,500 miles

ddd4114

At what engine speed did your ECU engage VTEC originally?

97ek9

4,500 on a jdm p72

but i got a p75 now.
chipped, converted to vtec with a tuned p30 map.

siregcivic

shitty tuning...

5500 is where the b16 should engage at...

are you shure.. that your vtec is even engaging? and its not just timing advance.. and that the p75 is actually converted to vtec...

pop your hood.. unhook the vtak solenoid wire start the car.. see what happens.. see if you throw a check engine light.. then if you dont.. GO DRIVE IT.. see if vtec still engages or not.. or if your hitting timing advance

if you get a cel.. probably just shitty tuning

jax97hx

And make shure you have enough oil in your car

97ek9

the car was dyno tuned(not my car, but the guy who tuned his b16 hatch). He basically burned HIS tuned p30 map onto my ecu. The vtec does engage, i can hear it and everything. It feels as if the car accelerates quicker to 5,500 and soon as vtec engages it kinda just bogs out. You can still hear the vtec but it feels really weak.