Re: Spring in your Steps

[PDQSHIP@aol.com]

In a message dated 96-09-01 10:26:13 EDT, you write:

<< 	I have a Charlie spring with two shims, plus a regulator on the 
 top side of the wastegate.  No solenoid at all.  My boost control is 
 entirely mechanical/pneumatic.  So far it is very reliable, but that 
 doesn't mean it won't fail.  I think I am going to try the stock spring 
 again with the solenoid in place, and use RDH/SJM's ECU probing tricks to 
 control boost.  I _think_ it will spool up faster.  It will also give me 
 factory safety cutoffs.  ...time (sigh) >>

Not sure the post was directed at you graydon...  Those running the solenoid
with the ground disconnected, will blow the motor if/when the solenoid fails
per Orin's prollum...  with the Spring, there really isn't a reason to use
the solenoid, cuz it only adds boost per the WG solenoid program...  And you
are exceeding it with the baseline spring pressure, so in effect, the
solenoid is not being triggered by the computer at all....  If one looks at a
turbo map and engine dyno, the WG solenoid is actually a great concept,
albeit not designed by audi to handle more than a small amount of addition,
and mods dictate that the program in the computer is inadequate....  The
trick would be to custom program the wg freq valve, based on the mods to the
car, but I doubt that the stock solenoid can handle the desired program in a
hi-performance audi....  A solenoid with a stock spring would prolly be the
best, tho fast spinning turbos tend to bleed a little boost on tip-in with
the stock spring, until the boost spins up....  The S4 pop off valve would be
a good addition to the WG freq valve, really helping transition to boost....
 That is really the prollum with a spring/solenoid system, the transition,
once in boost the solenoid system is miles ahead from a practical and
engineering standpoint....   Those of you running Charlies  spring without
any other mods to the system (ala graydon) seriously consider the pull and
plug of the WG freq valve, I contend you won't notice any difference
anyhow.....  And at least this way, the faulty solenoid won't blow your motor
up cuz you disconnected the ck to that system (ie. the FP ground)

Scott