Well this is for all you evo Guru's ......i have a few questions that im on a little concerned about that you guys might help me....

1. How much vaccum should my evo read at idle...is 20 ok?

2. On the greddy profec-b the first version with the nobes how much should the gain be set at im alittle confused on adjusting it.

3. On the boost controller should it hold the 20psi i set to redline or drop about a pound by redline...? mine drops a pound by redline.

This is my first turbo car and im new to this soo if you can help i would appreciate it...

 

idle is most of the time around 17-20... gain is basicly spool.... so it will vary as you add certain parts to the car. Mine use to be set to around 30 or something The twin scroll does a fine job of spooling up. Increasing it more then it should be causes some small spikes. Boost usually will hod to redline but it depends strictly on the valves used for the solinoids and how fast the boost controller and how well it can regulate boost... the Turbo is good for 20psi to red....

 

well i set it at 20 but once it pases 6 grand it will start droping till it hit 19....so it drops a psi from where i set it......is this normal ir is it supposed to hold the 20 till redline