Re:more boost

[pjwales@magicnet.net (Peter Wales)]

>Here I have to disagree. The Zener has essentially clamped the pressure
>reading at "12-13", whether your manifold is at 20, 30, 40, ??? PSI!
>From: Robert Houk - 

>Peter is right that a resistor will change the timing.  But if selected
>properly, it does not "screw it up".  
>paul timmerman


>WRONG !!!  you loose ALL BOOST PROTECTION !!!!!
>Alan Cordeiro

Wow, you guys love to pick a fight!!!! So all those experts who know better
than me lets see the correct way to do it posted on the list.

For all the others, remember that the boost sensor will only measure 15 PSI.
If you remove the boost limit, you will remove the overboost protection. The
dynamic impedance of a zener diode (hands up everyone who understands that)
will allow the voltage to rise to 4.5v, just below the cutoff and thats as
close as you can get without problems and without a lot of electronic
engineering.

I don't care what else you do, if you raise the boost cut level, you are in
danger of losing the overboost protection, because the actual limit is so
close to the limitations of the pressure sensor (4.65v boost limit, 5.0v
sensor limit), so go ahead and remove the limit and the overboost
protection. At least you know its gone and can make allowances for it.

Finally I would prefer to have no protection against a diaphragm split( the
way you guys go on, one would think the roads are littered with dead Audis
with split diaphragms) than risk detonation by advancing the ignition timing
under boost. If you are going to put a divider in there and then remap it,
why the hell don't you just change the software to move the boost limit up?

I love experts



Peter Wales                    pjwales@magicnet.net
President Superchips Inc
Chairman Superchips Ltd        "Timing is everything"
Superchips home page with all the answers http://www.superchips.com