3.4L supercharger

Question about fuel trims with a SC.
Been about 100 or so miles with my 3rz SC I installed, and just got my scan gauge setup to read LTFT and STFT values.

SFTF moves around in the single digits mostly as expected, but the LTFT is at about 11 idle and then goes up to 20's or so with heavier throttle usage. I have the OEM FPR setup as boost referenced.
I'm trying to determine if that's normal behavior or not. Seems that the LTFT should be closer to zero? Or maybe not since the FPR is referencing boost so adding more pressure, therefore more fuel volume?

LCE says that it takes a couple hundred miles for the computer to adjust so maybe that will change long term?

 

Remember that a negative fuel trim is rich and a positive number indicates a lean condition.

 

Correct. The LTFT values are positive indicating a lean condition. Computer trying to add more fuel to compensate for a higher volume of air.

 

Does anyone have TRD headers with the SC?
Are the trd headers worth it? Or are stock good enough?

 

Just install a turbo and forget about the TRD headers.

 

Will never pass emissions

 

I did a before and after dyno.
I gain 10-12 hp with Doug Thorley headers,

 

I do. They came with the truck though, PO installed them. So I can't compare to stock headers. They sound good I know that much lol

 

Same!

 

Did you feel the difference? Seller is asking $1.2k
Don't know if it's worth it

 

Is your truck loud?

 

Headers are the last thing to add for powers because the price is expensive for the trade off in power,
Yes you will feel a small difference,
Trd and Doug Thorley power gains are probably going to be close.
Did NOT make my exhaust too much louder.

 

I have TRD headers with TRD super Charger. after market muffler. I love it. idk if it makes more power than other headers because I've had these on since I got it

edit, but I really like the sound

 

Not really, just has a throatier sound to it than a stock header v6. It was a lot louder when I had this on it, cut it off for my axle dump a few years back. Was getting too friendly with rocks

 

these are the headers (found picture on another thread)

do you have these headers? so I imagine that you do have trd headers if you have a TRD tail pipe but headers come right off the block

 

Yes I have the TRD headers, I just mentioned the exhaust tip because he was asking if my truck was loud.

 

oooooo totally, I should have read a little more carefully. doi

 

That's good to know. I'm not too much into loud exhaust systems

 

What muffler do you have? I'm also going to need a new exhaust. Mine has 2 holes right before the cat

 

I'm tempted to get them but the price point turns me away