Bucking in second gear

[Contr_eras]

Hey sorry for forgetting all the extra info I wrote that at almost 4am. No CEL, No codes (haven't checked the durametric yet). 2004 102k miles. Mods: Vivid Racing Tune, catless headers, testpipes, circuitwerks muffler, k&n oil filter, high flow air filter. Recently put the stock throttle body back in the car after having a larger one in 1500 miles ago, Mobil 1 oil change about 2k miles ago, AOS 7k miles ago, Beru coils/spark plugs 8k miles ago. It feels like when your first learning to drive stick and don't have smooth shifts yet. No misfires.

[blue62]

Originally Posted by Contr_eras

Hey sorry for forgetting all the extra info I wrote that at almost 4am. No CEL, No codes (haven't checked the durametric yet). 2004 102k miles. Mods: Vivid Racing Tune, catless headers, testpipes, circuitwerks muffler, k&n oil filter, high flow air filter. Recently put the stock throttle body back in the car after having a larger one in 1500 miles ago, Mobil 1 oil change about 2k miles ago, AOS 7k miles ago, Beru coils/spark plugs 8k miles ago. It feels like when your first learning to drive stick and don't have smooth shifts yet. No misfires.

Very very difficult to diagnose issues on cars with mods like yours especially when you have a "tune involved"

Even more difficult over the internet.

If it only happens in one gear then I would look to transmission issues before engine issues.
Also if you get no codes no check engine light.
And you say it is like first learning to drive when you don't have smooth shifting down.
I would look to transmission issues first.

I would take it to a shop for an opinion.
Doesn't have to be a Porsche shop just one that has a good reputation.
Get them to take it for a test drive.

Let us know what happens

[MrBen]

I had the motor mount bushing replaced in mine last week and it shifts like butter smooth. I never realized what it should be like I’m certain the mount was bad when I bought the car. Not saying that’s your problem but I had issues with second gear is why I finally got it done. I had the brake fluid flush at the same time and I have much better response there as well