Hoppen 3B ecu mod and 3.0 bar PT's

auditude at cox.net auditude at cox.net
Wed Apr 2 11:37:15 EST 2003

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 it.

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 configuration.

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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