Do I need a Tuner after header install?

[omcar17]

Installing long tubes on my '01 formula A4. Will I need to have computer reprogrammed? Thanks

[Ed Blown Vert]

I would get it dyno tuned, you most likely are running lean now.

[Mr. Luos]

Don't LT's make it go rich?

But yeah...a good tune would find you more power and prevent any issues with fuel trims.

[Ed Blown Vert]

I have seen it go both ways ;)

[Mr. Luos]

Okay.
Just hear most of the time that they go rich. Mine did.

[nhraformula]

i had mine tuned.