I Need Help Installing This Asap.

[GS-F 500]

I bought this intake on eBay and I assembled it according to the picture. I removed my stock intake and tried putting this one on, but when I turned on the car, the rpm kept gong up and down. I put my stock one back and now I need your help installing the one I bought. Please help asap. Thanks

Here is the intake I bought:

http://cgi.ebay.com/ebaymotors/98-99-00-LE...sQ5fAccessories

[bang]

Is the aftermarket pipe diameter the same size as stock?

The symptom you are getting is unregulated air getting past or a leak, but if the pipe is larger it may be causing these symptoms

I bought this intake on eBay and I assembled it according to the picture. I removed my stock intake and tried putting this one on, but when I turned on the car, the rpm kept gong up and down. I put my stock one back and now I need your help installing the one I bought. Please help asap. Thanks

Here is the intake I bought:

http://cgi.ebay.com/ebaymotors/98-99-00-LE...sQ5fAccessories