RPM's drop which makes car shake

[974g63awd]

I have a 97 gsx and I have noticed some problems recently. When I drive at 60 mph ( or between 2k to 3k rpm's)the rpm's on my car go down and right back up. Every time the rpm's go down, my car begins to shake a little bit. This happens when I keep the gas pedal steady. And it only happens when I'm cruising between 2k-3k rpms. I have an AT so I'm not to sure if the tranny is going out. My mods are greddy bov, power extreme exhaust, injen intake, custome 3in high flow cat. Any help would be greatly appriciated.

 

[blackGSX2g]

Is the BOV recirculated? If not, that would cause symptoms like that.

 

[974g63awd]

Is the BOV recirculated? If not, that would cause symptoms like that.

No I was one of the stupid ones that got his injen intake from a "honda" shop. The intake that I have doesn't even have the flange that allows you to recirculate the BOV back to the intake.

 

[Cirus_93TSI]

, problem solved then. your bov will suck in air when cruising, since it only closes when you are in boost. if it isnt recirculated, your ecu cant add the right ammount of fuel.
personaly, id rather run a stock intake and have my car run right, then have an aftermarket one that makes my car run like crap cause it doesnt have a inlet for the bov.

or you coul;d always spend 1200 on a VPC, and safely run an atmosphere dump bov. but thats a stupid waste of money, since dumping to atmosphere doesnt do the slightest thing to help performance. if anything, it makes your car slower sicne the recieculated air helps to keep your turbo spinning when you shift.