ok so, me and my friend install a 5/8 skunk2 plenum spacer onto my 04 g35 coupe (5spd). we installed it and started the car. we started it and realized the idle was really low. then we took it for a drive and all hell seemed to break loose. its not accelerating worth crap, it tends to jump on and off, it dies at stop.

SOMEONE HELP!!! where could we have gone wrong on the install. we did everything (or thought we did everything) correctly. if you guys could leave suggestions on wat to check or wat to do it would be REALLY helpful

 

Make sure you put gaskets top and bottom.

Reset the ECU.

 

theres sealant at the top and a gasket at the bottom.
the problem was still continuing after i reset the ecu unless theres a learning curve for it

 

Did you disconnect any hoses from the upper or lower plenum?

 

i disconnected a hose from the top left, one from the intake, and the intake itself. i didnt take off the throttle body and coolant cuz it seemed pointless. i plugged all the hoses back in. could it be that the bolts arent tight enough?

could all this be caused by a missing bolt??

 

Sounds like vacuum leak to me...

 

sealant?... I've only used Motodyne but it's been on & off... never used sealant...

 

ok problem solved guys thanks alot!

it turned out that we didnt have the top part of the intake on. it looked like it was on but it wasnt. yes i know small and stupid problem but damn. im glad its solved!