Topic: 22RE - FI. Running too lean?

[Plekto]

I got my Thorley header put on today and it runs great.  (speedo cable catching fire (!) aside - whole other mess I gotta fix tomorrow. Not my fault, either.).  But...  The pipes are a bit blueish.  It's obviously running too lean.  So how do I make it run richer given that it has FI?  Or is it normal for these pipes to get like this when you first run them?(its got about 50 miles on it since it was all put together)

Oh - the timing is good, the plugs were replaced a few months ago(checked them - look fine) - has plenty of power... just seems to be running on the lean side now...(course it has loads less restriction - the previous exhaust was 1 3/4 and a half plugged cat)  Fuel filter looks clean as well.  I can't find anything wrong with the engine - it just seems to run lean with the new header?

[brainlessfool]

my header went bluish too. ran fine so?

[93tonkatoy]

It is normal for headers to run "hotter" than the stock manifolds, because of the thinner tubing in them. The stock manifolds get hot on the inside, but it takes longer for the heat to travel thru the walls to get to the outside, so more of the heat goes farther back in the exhaust. The headers allow more heat transfer in the engine compartment. This also allows the headers to cool off faster than manifolds, after the engine is shut off.

[Plekto [OP]]

K - thought so.  Guy at the shop said that was the chrome slowly cooking itself off.  Runs fine now other than it wanting to die at idle now that it has back-pressure.  Feels like my EGR is plugged again or I have a vacuum leak.  Fun fun fun this weekend... heh.(God I hate smog...)

Before: no power until 2K rpm and nothing beyond 3K(holes and tiny pipe with clogged rusty cat, respectively).  Now it pulls all the way up to 4500rpm and I actually *passed* someone yesterday in 5th gear. 

So Thorley header and straight-through muffler with 2.25 inch pipe - 200% recommended.