grinding noise/feeling when at high rpms and taking foot off gas and downshifting

[95JDMTSI]

okay guys need some help..... got my evo 3 big 16g put in yesterday. now for some reason im drivin around and when i take my foot off the gas and im at like 3000+ rpms the car like jerks around and grinds, something to do with the tranny/clutch.... also does it when im in third and downshift to second without letting out clutch really really slow or puttig some gas.... same grinding sound/feeling when im getting up high rpms and take my foot off the gas the car jerks and grinds, feel like tranny but what and why exactly.. tIA
tom

 

[95JDMTSI]

shifts fine still......

 

[95JDMTSI]

turboi was just installed, could it be a problem with turbo/turbo install? bov seems to be hooked up right will do it when downshifting specially into second unless im going real real slow the car will make a loud series of bam-bam--bam noises from front/center of car.... same noises if i gun it and then let off the gas at high rpms...

 

[95JDMTSI]

its not just a noise either, as soon as i let my foot off the clutch when downshifting i can feel the clunking under/in front of the car and if i were to floor it in gear and let go real quick i feel it too car jumps shakes it feels real bad like somethings grinding/breaking in there.... only happened after this turbo install

 

[scuRRed whiTey]

ur axle or cv joint has disengaged itself....put it up on a lift and fix it for u put a hole in ur oil pan like my buddy did...itll just get worse and worse then the car will go into gear and not move but the rpms and mph guage will go up...

 

[95JDMTSI]

nope..... was downpipe rubbing against tranny because turbo was bigger... close