yea.. I dont notice a ton. Must have been hella dirty for you to notice a huge gain. The only thing that makes me laugh is that the Cobb recharge kit states: "dont over oil the filter, this may cause serious harm to the sensors in the car" Exactly how much is over oiling?
The cobb SRI is a breeze to take off. One bolt for the bracket and 2 hose clamps. slap the stock airbox back in... provided you didnt gut the bottom out... and BOOOM.... your stocker.
So ive noticed this since I bought the car. When cruising down the highway I get this wierd vibration... right around 60 mph. I never notice it at low speed. It has about a half a second to a second inbetween each one. Its like a wooomp.......wooomp......wooomp. I had taken it to the dealer...
Got the car back.... the service advisor and tech said that my turbo was the worst they have ever seen. The intercooler was full of oil and gunk. Anyways.. wow... it feels like the car I first bought. Flashed it with the stage 1 93 map and it feels like a damn rocket. UNBELIEVEABLE!!!!!