CEL after swapping stock IM to 626 IM need some help

[BlkWidow]

I swapped out my stock MP5 IM for a 626 IM, I did leave the VIC solenoid plugged in. My mods are MSP ecu, Perrin fuel rail, 1.8 coil packs w/NGK wires, BooSTD GT28. Could the problem be that I am using a stock VC, I am waiting for my 626 VC to come back from CR3 MotorSports. Code is P0171

 

[StealthWyvern]

What CEL?

 

[Spiced MSP]

IIRC, that code is bank 1 lean or something like that

 

[BlkWidow]

I also have the mod in the How to section wired into my o2 sensor

 

[StealthWyvern]

How did I over look the cel info. P0171 system too lean (bank 1)

Have you checked for vac leaks?

 

[BlkWidow]

How did I over look the cel info. P0171 system too lean (bank 1)

Have you checked for vac leaks?

I forgot to mention that I also installed 2 thermo spacers one on th IM and one on the TB, the car is idling fine right at 800-900. I will have to go thru every line and check, and double check the spacers.

 

[01CrznMp3]

Yea might have damaged a vacuum hose during the swap where it is leaking or gasket is leaking.

 

[Nc MSP]

i had the same problem with that mani.....look for a vac leak everwhere around the throttle body and the manifold and see what happens

 

[jdwk]

800-900 is high with no accessories on. Can almost guarantee you have a vacuum leak. There is a hose you missed or cracked, keep looking.