[s-cars] VMAP question

[FvAMI at aol.com]

In a message dated 1/21/04 10:43:39 AM Pacific Standard Time, 
pizzoman at yahoo.com writes:


> Now whether you use a Bosch 3.0 bar, stock 2.5 bar, GM
> 3.0 bar or VMAP is up to you, but it looks like the
> VMAP is the more expensive option and once set up
> properly with the right chips for your application, I
> don't see the need to keep fiddling with transducer
> settings.
> 

1) The VMAP-D-3 is less expensive than the Bosch 211 even at the suggested 
retail price. So all the added benefits are free.
2) The GM sensor is external ... by the time it is all setup the integration 
cost will probably be the same as a VMAP. Without any added benefits.

Since the ultimate quest appears to achieve maximum horsepower - why detune 
your chips for the 90% time you run on 91 Octane. 

External boost controllers don't modulate the boost based on throttle 
position or do the higher end units have that now? Some can be set for gear and rpm 
...or do they also have programming for throttle position ... the snappy 
response most likely comes from the fact that they are constantly trying to achieve 
their set target boost which is independent of throttle position ... correct 
me if I am wrong I haven't looked at them for a couple of years.

The Motronics (first order) standard boost profile setup is related to 
throttle position and rpm. So at 33% throttle it's target boost may be only 0.5 bar 
boost and 1.3 bar boost at 100% (arbitrary example) ... your external boost 
controller may be setup to achieve 1.3 bar boost and it will attempt to reach 
that value weather it is 33% throttle or 100%.

Best regards,
Feico van der Laan