[s-cars] BPV - 710N vs. 710G

[Mike Claire]

All:  I just ordered a Bosch 710N from Blau.  What
came was a valve in a bag marked correctly - 06A 145
710N.  But the actual valve was marked Bosch 710G.

They look identical but they are NOT.

The spring in the new 710G (if this is indeed a new
Bosch replacement for the 710N) has a MUCH softer
spring.

I searched the archives but found no reference to
this.  I did however find this gem I will paste below.
 It was written almost 2 years ago - long before I
ever thought I'd own one of these cars.  Paul outlines
EXACTLY what I'm in the middle doing now, in order. 
Are we all this predictable???  Nice to see I'm in
good company!





[s-cars] Upgrade existing ECU to MTM stage 3
Paul Krasusky KrasuskyP at FirstInterBank.com 
Mon Oct 7 10:23:35 EDT 2002 

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Morning, twobro12, welcome to da list-

Heh, Lee's response hit it head on, upgrading the chip
will certainly lead
down an endless path of maniacal pursuit of the
perfect //S car.  That said,
and Lee neglected to mention, it's also NOT safe to
wives, marriages, etc.

Realistically, there are a few things to consider,
from my BTDT.

Chipping the car makes it fantastic to drive, hard,
which you will then do.
Often.  Repeatedly.  Unabashedly.  However, in doing
so it produces some
stresses to your 100k car (chipped mine @ 83k):

-Be prepared to start blowing boost hoses.  Then
begging the list here for
people's spares.  Then f'n the pooch and buying your
own set of Samco
silicon's, with big shinny clamps.

-Your BPV will likely get blown to bits or simply
begin goosefarting,
duckfarting, or whateverfarting.  You'll then replace
to Bosch Sport 710N as
it's affordable.  And that will blow apart 2 days
after install.  Then
you'll pay the crink for a Hyperboost, etc.  OK, my
710N has been 100% fine
(so far?), but I'm ready each day for kaputsky.

-You'll wanna measure the enormous increase in boost
now, especially helpful
in diagnosing the above inevitable failures, so you'll
lay down the coin for
a boost gauge.  The $ hill begins it's ascent...

-How's your tranny sound today?  Nice and quiet? 
Good.  Listen to it now
cause it *may* not be that way long after chipping. 
My '95 has developed a
1st gear whir, now @ 97k, not pinion, not broken
teeth, but likely worn 1st
gear bearing.  I DO do hard 1st gear starts.  I just
bought a warranty.  I
will have a CRB this winter 8-)!

-3-bar power won't be enough after about thirteen
minutes, you'll soon find
yourself cashing in the kids trust accounts for RS2,
et al, bits.

-Lee's right about brakes / suspension.  The chip
allows you to eat pavement
in voracious quantities.  You'll soon wear out brakes,
or have a few
hole-puckering experiences that will have you looking
into your pre-nup
clauses with your wife to fund big reds, etc.  Then
you'll have so much dive
and squat from the suspension that you'll...  it's a
vicious cycle.

And an evil Bitchtemptress most of us masochistically
catering to.

The process is best described as:

The leg bone is connected to the...   Hip bone.  The
hip bone is connected
to the...  some-thing.  The some-thing is connected to
my...  wrist-watch...
-Dr. Nick, Simpsons.

Conclusion?  Do it.  Join the insanity.

-Paul
CT
'95 //S6 with sparkling new warranty, hee hee 8-)
'58 TR3A broken and fixed 10x over



Twobro12 at aol.com writes:

> I current have the stock Audi S4 ('94) ECU, and was
> wondering about what
> S4/S6 owners recommend and have tried. I want to
know if I will have any
> problems by upgrading the ECU, considering my car
already has
> 90,000 miles,
> or is an ECU upgrade a safe performance upgrade. 
Please let me
> know anything concerning the subject, as I am a
beginner.  Thanks




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