Here is my setup:

Stock B17 compresion ratio of 9.7:1
BC spec 3+
BC Gears
Portflow iner valve springs
Type r outer valve springs
Spoon 7 lbs flywheel
ACT clucth
Test pipe
everything else is stock

valve lash intake .006 ticked at .007
valve lash exhaust .008
Buddy Club recommend .007 intake .008 exhaust


I know these cams are recomended for compression of 10.0:1 and up, but I knew it would atleast give me some gain if not at max gain with upgraded aftermarket parts.Man, the motor idles at a steady 700 rpm.No surges, nothing. The test run was awsome. Power gain through out the whole power band. Midrange feels very strong. The vtec crossover is soo smooth now, I dont even feel the "KICK". Gave me a good bump in power. All i can say is wow. That is the good.

Now I am stumped and need help with this situation. I start the engine, let it warm up and it goes through it's cycle. 2k rpm idle and drops steadily till engine is warm at 700 rpm. The engine runs superb for 20-30 mins.No hesitation or bogging at all while driving. After the 20-30 mins it would bog from 1k-3k. If I park the car to go into the store or something and come back, drive the car it would imediately have the same bogging. I know that the cams are big for the compression I have. Which is why I advanced the intake cam +4 degress to help eliminate the bogging and it did help a little. Timing is at 16 degrees stock. I am stumped. No problems after 3k rpm, good midrange, top end after vtec pulls strong all the way to redline.

Please help me figure this out guys.

 

what are u using for fuel management? sounds to me like you running a little rich between 1000-3000 rpms. When the engine is cold, cool/dense air from your intake allow the extra fuel to burn correctly. But as soon as the engine heats up, it would require less fuel to operate at those rpms, hence hesitation, bogging of injectors...etc.