I have a 2000 mustang gt convertible with a flowmaster catback and a K&N cold air intake. I am planning on buying the typhoon intake and throttle body/plenum combo from blueovalindustries.com, as well as changing my headers and midpipes (O/R H or X). After tuning the combo with an XCalibrator II, how much HP to the rears will I obtain with this combination, hypothetically with a street performance tune? Also, how deep and loud will bassani headers plus O/R Mac Prochamber combo sound, as opposed to a BBK (or any other) O/R x pipe?

 

around 15-20 hp

 

i dont think there will be much of a sound difference between bassani and bbk headers the bassani will be higher quality but most are happy with bbks for alot less thats what i plan on getting just ceramic coated the prochamber will probably be a bit deeper but the xpipe will be louder and raspier i like the sound of an x better personally xpipe w/flows sounds mean either combo would sound good but id go w/bbk and xpipe and save some money

 

Maybe

 

Only 15-20 HP? I thought the tune itself would get me that much. There's also LT headers, midpipes, and intake manifold with TB/Plenum combo...

 

i would say 20-25 RWHP

 

i have bassani headers, x pipe, tb, plenum, and k&n cai, and just got a tuner. i should have it dyno tuned on 93 soon

 

Do some searching for info about the Typhoon intake, to say that it's value is questionable is to be nice. The PI intake flows prettywell for an otherwise factoryengine--'twas me I'd look into cams before I spent any money on an intake manifold.[/align][/align]Just MHO...[/align]

 

Your exhaust alone should net you that much give or take a few hp. You may be very disappointed in the Typhoon for what it is going to cost you. Virtually no gains NA and only moderate ones on FI (according to other posters).
The tune (depending on what octane you go) will give you another 10 or so depending on who does the tune. Some tuners are much better than others. Tim at MPH does great tunes for the X-Cal2 imo.

 

Very good advice!