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The important factor . . . sure, rev the hell out of your car and you get noise (which is what many of the videos do to show and sell their product) . . . BUT, which has the impressive, low, dangerous burble AT IDLE?
THAT is the true test, don't you think? The coveted IB (Idle Burble).
2007 C2S Cab
Stock headers
Stock mufflers with “Fister” mod
Top Gear 200 Cell cats from England.
No engine lights once I replaced O2 sensors.
I personally love the note, below 4K it has a nice grumble. No drone. Above 4K she starts to scream all the way to redline. Puts a smile on my face every time.
150 bucks for the Fister work at a local muffler shop. I pulled the cans myself.
Around 800 Canadian for the cats shipped to Vancouver.
Installed myself.
:-)
Last edited by chonniedotcom; 10-29-2020 at 12:04 PM.
2007 C2S Cab
Stock headers
Stock mufflers with “Fister” mod
Top Gear 200 Cell cats from England.
No engine lights once I replaced O2 sensors.
I personally love the note, below 4K it has a nice grumble. No drone. Above 4K she starts to scream all the way to redline. Puts a smile on my face every time.
150 bucks for the Fister work at a local muffler shop. I pulled the cans myself.
Around 800 Canadian for the cats shipped to Vancouver.
Installed myself.
:-)
Any sound clips? What do you mean by "No engine lights once I replaced O2 sensors."?
Any sound clips? What do you mean by "No engine lights once I replaced O2 sensors."?
i uploaded some clips in another thread I will need to find it. Search under my name.
I was getting some OBD P codes after swapping the sensors from the stock cats to the high flow ones. I had to heat them up pretty hot with a torch to get them loose. Maybe I cooked them? Or I contaminated them when swapping. Not sure.
I replaced the upstream sensors as I was seeing some weird results when viewing them on my OBD tool.
If you get codes you can also just add an extender on the O2 ports which worked for me.
I have a similar setup:
x51 headers
AWE 200 cell cats
Gundo hacked OE muffs
Aggressive at startup, nice burble at idle and holy hell at WOT.
The change in cats makes the most difference in sound
Could not agree more. The Cats are what made it. ;-)
Here is the link to my thread that has sound clips. There are a couple vids for my car. First is at idle and small blips. The other one is on a freeway. ;-). Take a listen.
The PSE by the factory is pretty good. As mostly an air-cooled 911 guy for decades, the 997S with PSE is great. Even a friend of mine with a Carrera GT thinks so!
Could not agree more. The Cats are what made it. ;-)
Here is the link to my thread that has sound clips. There are a couple vids for my car. First is at idle and small blips. The other one is on a freeway. ;-). Take a listen.
I have fabspeed headers, xpipe with 200cell cats, and muffler delete... I can’t get enough of the way my car sounds... I never have the radio on even with a alpine ilx head unit, alpine amp, all feeding a full focal set up.
With the x51 airbox, GT3 throttle body, and MaxSpeed plenum, lightweight flywheel all I hear is the flat six sing it’s beautiful song
Hi!! I´ve installed the Fabspeed headers in my 997.1 C2 (manual) and I´m experiencing a very noticeable loss of torque in the lower rpm, so bad that makes the car to stall sometimes. When turning a street corner, in second gear, if I put too much gas, the engine stalls. It doesn´t happen with the OEM headers. I´m planning to make a ECU flash repro to see if it can fix the problem. Did you gain some power with your configuration? I want better torque as this car is my daily, and I really don´t care for gains in power in 7500rpm. Also I noticed that with the OEM headers I´ve never went full throtle above 2.000 rpm as the acceleration was brutal... now I can put my pedal to the floor after 2.000rpm and up to 3.500rpm the acceleration is slower than before... the difference occurs above 5.000rpm...
Hi!! I´ve installed the Fabspeed headers in my 997.1 C2 (manual) and I´m experiencing a very noticeable loss of torque in the lower rpm, so bad that makes the car to stall sometimes. When turning a street corner, in second gear, if I put too much gas, the engine stalls. It doesn´t happen with the OEM headers. I´m planning to make a ECU flash repro to see if it can fix the problem. Did you gain some power with your configuration? I want better torque as this car is my daily, and I really don´t care for gains in power in 7500rpm. Also I noticed that with the OEM headers I´ve never went full throtle above 2.000 rpm as the acceleration was brutal... now I can put my pedal to the floor after 2.000rpm and up to 3.500rpm the acceleration is slower than before... the difference occurs above 5.000rpm...
Hey Diego,
Very sorry to hear you're having issues with the headers, are you still running your homemade X-Pipe?
No, I´ve changed completely the exhaust. The fact is I tried Fabspeed headers with OEM cats and mufller bypass and the problem persisted, so I installed OEM headers and the problem was solved. Now I installed again FABSPEED headers and made a completely new exhaust (catless) and the problem is there again.
Last edited by Diego Mintz; 11-08-2021 at 12:01 PM.
No, I´ve changed completely the exhaust. The fact is I tried Fabspeed headers with OEM cats and mufller bypass and the problem persisted, so I installed OEM headers and the problem was solved. Now I installed again FABSPEED headers and made a completely new exhaust (catless) and the problem is there again.
Very Interesting! I can truthfully say we have never heard of anyone having this issue when installing our headers.
In all of our R&D testing, 997's gained power and Tq using the full OEM system + our headers. Feel free to shoot me a PM and we can connect our engineers with your shop.
10-28-2020, 06:33 PM
Sounds great, very similar to mine (cab also but i also have the 4L...)
