So for a while now, every so often my car(MY00) will "jump" or "blip" a little when I get up around 4-5k rpms, usually it hasn't been too bad or too often. Today I changed my brake fluid and clutch fluid, as well as installed an invidia q300. After all of this I took my car for a test drive and everything was fine. On the way home however, every time I got to around 4k-5k my car would violently jump and the rpms would go down making the car shake. I went to subway then drove again and it was doing the same thing. What might this be? Thank you for your help!

 

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The car, or the engine?

if the engine stumbles, search for "MAP whack".

 

Hmmm. I suppose its the engine sputtering in a way. I'll read through that^ thanks

 

Make sure the plugs are torqued properly. People have had the plugs back out which causes all sort of problems.

 

Hey thats the same exact problem I have right now. Did you ever find out what it is?

PLEASE LET ME KNOW!! HAHA