I have a 2001 A4 1.8TQ tiptronic.I just got it chipped (GIAC 91 Octane program) several days ago.

I was on the way to my place from my friend's place tonight and as I hit around 4000 rpm in 1st gear, the car started rattling back and forth (I don't know how to put it. You guys know the feeling you get on your break pedal when ABS is activated? It was like my whole car was vibrating like that.) for like 2 seconds and engine oil light started blinking. And I changed my gear and it did the same again round 4000 rpm in the 2nd gear. The only problem I can think of is that my engine oil temp. was below 150 degrees.

Is it because my engine oil temp. was too low? Or is there something else wrong with my car?

Also, I hear this pshhhhhh-ing noise when I floor the car. I put up a thread before saying that I couldn't feel the difference between before I chipped my car and after, and someone replied that my DV might have worn out.I have a stock DV and I know I should change it sometime soon.Is my car making that noise because my DV is worn out?

Thank you.

 

If you havn't upgraded your DV, that would be #1 Or you have a major leak somewhere. Also, If you haven't yet, get your codes checked. even though your CEL isn't on, your ECU will store the code. Bring the code back and we can help more