Ok, so since I purchased my 1993 FD its had a problem when I take it over 4500rpm, this happens in every gear. Once I go WOT it runs 10 psi of boost then around 4500 it drops to 7 psi then drops again to 5 and bounces between 5-6 psi till i shift. Does anyone have any insight on what the problem might be, Here is a video of it doing it because I'm sure seeing it will be easier to understand then me trying to explain in.

http://imageshack.us/clip/my-videos/...jebeqiujv.mp4/

 

No one has any insight on this? I could really use the help

 

Sounds like it could be a leak in a line of your secondary turbo. I'm not an expert but since you're pulling 10 until about when the secondary kicks in then it doesn't build past that, it could be a leak in the lines. Just my .02 but wait for someone smarter to input.

 

Ok thanks and when you say a line can you be more specific on the type of line?

 

Pretty new to FD's, but sounds like a boost leak somewhere.

 

Troubleshooting

Turbo / Boost Problem Troubleshooting

https://www.rx7club.com/3rd-generati...-stuff-802060/

https://www.rx7club.com/3rd-generati...ambers-900195/