3.2 Euro vs US

[ckmaggie]

As I am reading Paul Frere's Porsche 911 Story, I see that the Euro spec 3.2 has stock HP of 233 while the US (catalyst) version has 207.

Is it a fair assumption that if I remove the catalyst (replace w premuffler) and get a chip to match euro spec (steve wong), I can easily achieve 233? Can I go further?

I plan on keeping muffler and heat exchanger. Want the most HP for the least dollars.

Chris

[creaturecat]

euro has roughly one more point of compression (10.3) - 231 horsepower

[Mark in Hermosa]

Originally posted by creaturecat
euro has roughly one more point of compression (10.3) - 231 horsepower

Not necessarily. When we rebuilt my well-maintained Euro in order to bring it to US spec (for race classification purposes), the compression was 9.8. We brought it down to 9.5.

To answer the orig question, I think the chip helps. It really helps to have the chip built to your needs and based on your car's specs as well as the fuel you use.

[creaturecat]

[Carrera3.5L]

Originally posted by Mark in Hermosa
Not necessarily. When we rebuilt my well-maintained Euro in order to bring it to US spec (for race classification purposes), the compression was 9.8. We brought it down to 9.5.

Good old Mahle and/or Porsche strikes again. My 100mm P's and C's for a 3.5L are advertised at 10.3:1 and are actually QUITE a bit below that. Don't assume anything. The 993's are rated at 11.3:1 and the ones that Andial has torn apart measure out to 10.8-10.9. Volkswagen is also notorius for inflating CR's.

My original 3.2L with a Steve Wong chip, Dansk pre-muffler and Dansk stainless muffler made 199 rwhp (some have seen more) which puts you in the horsepower neighborhood your contemplating. All with, ahem "9.5:1" US spec compression.

Ralph

[Mark in Hermosa]

Sorry I wasn't clear Creaturecat. I didn't mean to bunk your comment. I just meant that the reported and actual differ greatly (as the person above put it [a bit better])

[creaturecat]

not a problem!! Mark in Hermosa