Hi all,
I have a 2001 ME7 C70 T5, 16T with RICA map 3" downpipe ferrita cat and exhaust. I suspect the actuator is a little tired at 120,000 mls as with everything else checked and replaced boost isn't holding.
What should be my starting point with the following actuator spring choices and will it be the ME7 software and map that actually overides the quoted "running pressure"?
Thanks.
T2 actuator spring selection guide from Forge Motorsport.
The following is general information regarding Forge actuator spring tensions and are important considerations when making a decision on which spring you install, especially if you are running a boost controller or planning an ECU upgrade.
The 4 springs we offer are listed below under their relevant colour codes and related pressures. Running pressure is the lowest or minimum pressure the spring will operate at, which is important when considering which spring you choose. The spool up pressure relates to the vacuum pressure required to lift the spring from its static position, at which point the turbo waste-gate will start to open (spool up).
The actual rating for these springs is as follows, the lower pressure being the spool up pressure and the higher pressure being the running pressure:
RED 17 psi (spool up) - 20 psi (running pressure) our product code FMAS049R.
BLUE 14 psi (spool up) - 18 psi (running pressure) our product code FMAS049B.
YELLOW 9 psi (spool up) - 15 psi (running pressure) our product code FMAS049Y.
GREEN 5 psi (spool up) - 10 psi (running pressure) our product code FMAS049G.
The spool up can be altered to a higher pressure by adding more tension to the spring. Be careful not to add too much tension to the spring as it will become coil bound, affecting the rod travel and thus affect the waste-gates ability to open effectively. Running pressure cannot be adjusted by adding pressure to the spring.
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