Hoppen 3B ecu mod and 3.0 bar PT's

Richard Tanimura Richard at Tanimuras.com
Wed Apr 2 21:53:36 EST 2003


Firstly, 3 bar MAP sensors are commonplace. They are not hard to get att
all. The only problems are that they either do not have the same footprint
as the original sensors or they run off higher voltages. I can lift the
phone tomorrow and get 250 and 300 kPa chips with the same footprint but
which run on 12 volts and 250, 300 and 380 kPa chips which are placed
outside the metal casing with voltage pulled from the PC board to the
sensor. No probs. How many do you want?


-----Original Message-----
From: 200q20v-admin at audifans.com [mailto:200q20v-admin at audifans.com]On
Behalf Of auditude at cox.net
Sent: den 2 april 2003 18:37
To: 200q20v at audifans.com
Subject: Hoppen 3B ecu mod and 3.0 bar PT's

Hello List,

Hoppen has told me that their ecu modification for the 3B engine uses a 2.5
bar pressure transducer.

The lady I spoke to said that the hp is 270 and the torque is unknown.  She
was unable to tell me if these numbers or the use of the 2.5 bar pressure
transducer instead of the 3.0 bar one is due to the lack of overboost
function on the 3B.

I have read somewhere that the overboost can be added to the 3B's with
custom programming.  Whether this is possible or desirable, I don't know.

Intended Acceleration lists a "Stage 5" mod for the 3B that  uses a 3.0 bar
PT.  However, don't they end up soldering their chips to the ecu without the
socket?  I'm not a big fan of that idea.  It would be nice to be able to put
back in the stock chips if the need arises.

I understand the issues of screwing up the physical chip swapping and of
"chip or socket creep" and other justification for that soldering-in
practice.  My opinion there is if chip creep was a problem, Audi wouldn't
have socketed those chips.  I see it as more of a business secret
preservation technique, or repeat business insurance for when future changes
are desired, which I can understand.

At this point, my thought process is this:

1. Since IA offers a Stage 5 for the 3B, somehow a 3.0 bar PT has a use in a
3B car in some configuration.

2. I think someday I want to mod the crap out of the 3B, to RS2 levels and
possibly beyond.  Maybe that's "Stage 5"?

3.  If #1 and #2 are true, and I can get a hard-to-find 3.0 bar PT, I'll do

4.  I'd like to get maps that work with the stock engine and turbo for now
(i.e. IA 3+, Hoppen 1), but work with the 3.0 bar PT.

I suppose I could get a 3.0 bar PT and hoard it, and also get a regular
Hoppen stage 1 or something like a "Mihnea chip(tm)" for the stock

Most urgently I'd like to know if a 3.0 bar PT can be utilized on a 3B, or
if it would "never" be necessary.  The possibilities include some of the
Audi20v_Kruemmer stuff if anyone is familiar with some of those guys.

What do y'all think, particularly with regard to #1 above?  True?



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