Guys seriously!

headers alone make no power - tried and tested several cars.

Software will make a difference in HP and Tq- but most noticeable will be the throttle response and mid range torque that is improved..

If you are looking at performance from an exhaust system the biggest restriction is in the catalyst - Go with a high flow catalyst and that is where you will gain the most power. Mufflers make very little to no power - mostly sound.

However if you approach the entire exhaust system as a complete unit it boils down to this.

Catalyst make power
Headers- aid in this power by extending the power band and throttle response.
Mufflers aid in sound and very little power.

A good option for exhaust is the complete system from AWE.
We have also been very happy with the Tubi Mufflers/ Tubi header and Cargraphic 200 cell catalyst combination.
The Cargraphic full system also works very well but is the most expensive of all..........

 

everyone posts their PEAK HP including Porsche... like your C2 which makes 325hp stock... thats right where Redline is... not during idle... come on man... which company reports average HP during entire Rev range... you tell me...

Alan

 

Sorry I should be more clear. What I mean is you can't add the peak horse power from different companies and say that is the new peak horse power.

Say company A's intake devolopes max 10hp at 4300 RPM, company B's header does 15Hp at 4500 RPM, company C's ECU does 20 HP at 3000 - 5000 RPM.

The total peak horse power from all these mods make is 35 horse power at 4500 RPM. Not 10 + 15 + 20 = 45hp.

hope that makes sense.

Happy holidays all

 

dont beleive the hype..save your money for a supercharger

 

i did dyno runs before and after the installation of my suncoast headers. they were done right before and after the installation. same day, same dyno/operator. not even mileage to let the ecu adjust.

approximatley 25 rwhp max
approximately 10 rwhp peak

i've seen dynos of the same product on different 996's and they get the same results. there was a slight dip in the low end, but that's exhaust tuning. give some to get some.

 

deputy - where did you go for the dyno runs? i did before and after and showed zero gains..so what was your after dyno peak hp and torque?

 

i went to z fever in tampa. it is off lois ave in drew park. the car is making around 425 to the wheels.

this is one of the "after runs". i can't remember if it's the best one, but you get the idea....

 

that's weird you got nothing. it is my understanding that suncoast makes the headers for evo. i've seen other dynos on NA 996's and suncoast headers with similar results to mine.

 

ah - it added hp to a supercharged car..not a stock NA car

 

yes, but like i said. i've seen dyno runs with the suncoast headers on NA 996's with the exact same results. that's what got me interested in them in the first place. at the time they had just finished developing them. they offered me a full refund if they didn't dyno out to the charts i had seen. they did, so i kept them i don't think the supercharger had anything to do with the results.

 

well as i said, i did before and after and got zero on my 997s and that was along with intake and giac flash

 

Same shop, same dyno & same day?

 

yup..ofcourse..

 

Do you still have the stock cats ?? If yes, that´s part of your probem. The other could be your programing.


Theo

 

you got ripped off for your dyno... there is no POSSIBLE way you don't see any gain with even just a muffler... you will see at least 1-2RWHP... well with full exhaust and ecu and airbox like i said will gain more than 30whp on the 3.8L cars... i mean i only had the AWE header, high flow cats, and exhaust and i could beat stock 996TT 1-3rd gear from a roll of 10mph... there must be something thats up with the exhaust alone!

Alan