Some guy asked me one time what kind of engine i had in it, i was like i really dont think it matters to you, And also when i was @ meineke a few weeks ago because i bent a fork on my stock UDP, (I couldnt get it off) - they said low compression meant my engine was blown.... I was like ummmm, yea so my newbie ass went along with it and they convinced me that i had really broken something so that next night i had it towed back home and me and alejo worked on it.... It ends up that our UDP controls like the timing on our car so basically it ****** up the compression, we threw on the new UDP and everything was A-OK!. I drove back the next day, and said it was the underdrive pulley, you lied to me, and you wanted was my money... I sent an email to Meineke customer support- i am hoping i get my money back. in the near future. I, myself believed them @ first but then researched it @ home and realised our cars are dependant upon that sensor down there for timing and since the stock udp wasmissing a fork it messed up the compression.