Both sets of pulls were run on a "Dyno Dynamics" style dyno.

Dyno before Exhaust Modification at 80F
Horsepower 337
Torque 318
2005 Jaguar S-Type R on Dyno Dynamics dyno - YouTube


Exhaust Modification:
http://www.youtube.com/watch?v=aRNil... Mod - YouTube


Dyno after Exhaust Modification at 85F
Horsepower 343
Torque 327
2005 Jaguar S-Type R Exhaust Mod on Dyno Dynamics dyno - YouTube


The new exhaust is a much louder in person that what is perceived on these videos.

 

Dang! That STR sounds mean. So you gained a few ponies. Now it's time for a 3 lb. pulley.

 

very nice , 10% gain at wheels is pretty gud
did u change the cats ?
thanks

 

Nice increase in performance and what I'd expect for an exhaust mod. Could you detail again precisely what was changed? I know you're keeping stock piping size.

 

Huh?

HP was up 1.7% Tq was up 2.7% . Not to be a jerk, but that falls within normal variations of 'different day' dyno runs on cars with no mods performed.

 

3 Pulls
Modified Exhaust (HP and Torque):


3 Pulls
Modified Exhaust (HP and Air/Fuel):


Best Pull
Stock* vs. Best Modified Exhaust (HP and Torque):


Best Pull
Stock* vs. Best Modified Exhaust (HP and Air/Fuel):


Note: Stock* = Mina cat back since original exhaust was damaged when a pizza driver hit the rear of my vehicle. Track runs showed no performance increase/decrease with the Mina system.
Jaguar S-Type Performance Exhaust for Jaguar S-Type Mina Gallery

I want to warn everyone again, this system is loud! More hillbilly horsepower than "real" horsepower has been achieved.

 

Yepper, keeping the stock size. The parts, as well as the installer, are annotated in the video 2005 Jaguar S-Type R Exhaust Mod - YouTube but here is everything again since it was missed...

Parts List:
Magnaflow 59975 Universal Catalytic Converter, 2.25"
Magnaflow 10790 Tru - X Stainless Steel, 2.25"
Stock Resonator Removed
Mina Exhaust, 2.25"

 

oops sorry misread in tired state , long hours at work
mind wasnt thinking right
sorry

 

that is exactly what it shud sound like

cheers on the exhaust note ,

 

Yup--so-called performance exhaust systems have to be the absolute worst bang for the buck of any modification. Over on the Corvette forum that I frequented when I had my 95, there was never a shortage of guys who would end up complaining about too much noise and resonance inside the car after spending big $ for an aftermarket exhaust system.


Doug

 

Your ride sounds mean , very refined and dinstictive sound