L35 Head Swap

Ty1329

Member
Just did the L35 head swap. Is it normal to have to add a bunch of fuel at idle to get the AFR correct. When I first did the swap and started the car it went all the way lean I had to turn the dial on the idle pretty far to get it to come back down. I have not driven the car yet.
 

EricM

Administrator
Staff member
No that's not normal. Normally I don't have to add fuel at idle for that. I would make sure the IAC reading is correct (around 20-30, warmed up, in park). Also check the MAP reading. It's possible it needs to be driven a bit for the BLM's to learn.
 
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