MX6.com - View Single Post - KLZE Intake Manifold (IM) Installation Guide

Omaha95PGT · 11-11-03, 7:24

On a side note regarding EGR (Exhaust Gas Recirculation) and EGR CELs (code #16 on OBD-I cars):

That EGR CEL (#16) can be gotten rid of if you have it set to vacuum correctly. Do not connect the EGR solenoid to the IM vacuum. It should only see vacuum coming from the VAF side of the TB. The little hose that originally ran to the stock airbox should go to a small vac port in either the air intake elbow or in one of the silicone couplings (as in the PRM setup), or somewhere in the downtube (if a bung is available). If you don't connect this vac, you will get the CEL.

When the car is idling, it should see almost atmospheric pressure (only very slight vacuum). When the throttle opens, it should see an increase in vacuum. If it's "T'd" off a vac source on the IM, it will see a huge vacuum level at idle and decreased vac at open throttle. The reverse of what it should see in the stock setup which is why it probably gives the error.

On OBD-II cars you have to ensure proper vacuum as noted above and also, you have to make sure the EGR has proper flow since the OBD-II cars had a sensor that made sure the EGR flowed exhaust gas and was not blocked off. In which case, you would have to drill a hole to the right of IM intake runner #5 on the mounting flange matching the EGR port location on the head. Then you would have to run a tube to the neck of the IM to distribute the EGR gases to the cylinders. Optimally, it should feed both the rear and front cylinder banks

11-11-03, 7:24	#9 (permalink)
Omaha95PGT Join Date: Jan 2003 Location: Chesapeake, VA iTrader: (0)	On a side note regarding EGR (Exhaust Gas Recirculation) and EGR CELs (code #16 on OBD-I cars): That EGR CEL (#16) can be gotten rid of if you have it set to vacuum correctly. Do not connect the EGR solenoid to the IM vacuum. It should only see vacuum coming from the VAF side of the TB. The little hose that originally ran to the stock airbox should go to a small vac port in either the air intake elbow or in one of the silicone couplings (as in the PRM setup), or somewhere in the downtube (if a bung is available). If you don't connect this vac, you will get the CEL. When the car is idling, it should see almost atmospheric pressure (only very slight vacuum). When the throttle opens, it should see an increase in vacuum. If it's "T'd" off a vac source on the IM, it will see a huge vacuum level at idle and decreased vac at open throttle. The reverse of what it should see in the stock setup which is why it probably gives the error. On OBD-II cars you have to ensure proper vacuum as noted above and also, you have to make sure the EGR has proper flow since the OBD-II cars had a sensor that made sure the EGR flowed exhaust gas and was not blocked off. In which case, you would have to drill a hole to the right of IM intake runner #5 on the mounting flange matching the EGR port location on the head. Then you would have to run a tube to the neck of the IM to distribute the EGR gases to the cylinders. Optimally, it should feed both the rear and front cylinder banks Last edited by Omaha95PGT : 11-11-03 at 7:39.