Exhaust differences/modification hp differences

[Craig 930 RS]

On a 3.2 Carrera engine, what would be the peak hp difference between:

SSI and dual out sport muffler vs. 'European Racing Headers' + Phase 9 mufflers/megaphones?
(When a MAF is used; aka appropriate intake mods made)
Seems to be only about 8 hp or so. What have you noticed?


I've found that hp values for other mods are as follows, YMMV:

SSI vs stock Carrera exhaust in back-to-back tests: just 4 peak hp documented
Autothority MAF: 10hp
Compression ratio increase from 9.3 to 10.3: 10hp,
plus an additional increase for twin plugging (needed with this mod)

What gains are to be expected by advancing the CAM timing a bit?

THX
Craig
Rennlist since 1999, 5,000 posts - new to this forum ;-)
www.RennStore.com
Pagid Oranges, Blacks, Motiv, Heet Sheet, Gate Shift...& more

[ChrisBennet]

Originally posted by RennStore

I've found that hp values for other mods are as follows, YMMV:

SSI vs stock Carrera exhaust in back-to-back tests: just 4 peak hp documented

Did the "stock" Carrera exhaust have a working cat or was it gutted (like so many are)?
-Chris

[Craig 930 RS]

The cat was working. BTW, a friend did a pre-gut after gut Dynojet 248C run and it made a 1 hp difference. But the sound was nice:-)

Craig
www.RennStore.com

[ChrisBennet]

Good info.
-Chris

[Craig 930 RS]

"Facts & data, not guesses"
Still love to hear others' experiences with the above.