996.Carrera

https://www.vividracing.com/-p-15441...iABEgJ3OvD_BwE

I am considering these over my stock mufflers. I did just install Top Gear 200 Cell Cats. I like the price and Vivid told me 6 to 7 weeks because they are made when order placed but I am catious because the website mentions:

"Note:

• Trimming of the inner fender liner and exhaust heat shield is required on all vehicles and headlight auto leveling sensor may need to be disabled / removed and rerouting of brake hard line may be necessary to protect from heat - as such we recommend professional installation."

Also, how does it sound and is it easy to wire up?

Soul Performance

Thanks for considering our Valved Exhaust System! I'm not sure why Vivid has those notes on this product as they should not be there.

This is the sound you can expect from upgraded catalytic converters and our Valved Exhaust System:


Valve controller installation takes a few hours but if you have experience with wiring it's not terrible. We're always standing by to help during the installation if needed!

-Mike

Dk27

I have the vavled catback on my 997 c4 and love it. The quality of the materials, welds, and finishes is second to none. I get a lot of compliments on the sound of the car both valves closed and especially open. Unlike a full bypass there is no drone on long drives and can go on 3 hour highway trips with the valves open.

I installed them in an afternoon with the help of my brother. Straightforward install, and i just followed the instructions they provided which were clear. Nothing has to be trimmed on the car to get the cans in. They are much smaller than the stock cans, and lighter. One tip i have is for the routing of the vacuum lines to the cans, make sure there is no excess line used, but enough such that the lines aren't pinched. I've burned through the vacuum line twice during at track events(high heat over 20 min sessions) before i found the ideal amount of slack.

996.Carrera

Thanks for your comment and insight. I popped my stock mufflers out for about a week and ran the fabspeed bypass but the drone was bad. I had a buddy do a fister hack and then I just installed top gear cats. It sounds good now but at times at low revs it sounds tiney. I think it is the hack. So valved is the best of both worlds. I just hope they don't take 6 to 7 weeks to get to me.

After making some exhaust mods did you tune your car? I am not sure I need to but curious.

Dk27

The exhaust is well worth the wait. It was one the two best mods i've done to my car along with coilovers. You can also integrate the valves to open and close using two buttons on the garage door opener, which is nice not to have extra items on the keyfob. In June i'll have had the exhaust on for 3 years without issue.

I am not 100% sure but I think our Ecu's are able to adapt to the bolt ons. I think to get every last ounce though a tune may help. I did go with the softronic off the shelf tune which helped lean the car our a bit, and get a bit more power(maybe in my head though). Also with the valved exhaust i was able to do port injected pops and bangs tune and it sounded awesome.

Papamurphdog

I just added the Soul long tube sport headers and their center muffler delete, with stock cans still in the car. Sounds great and for sure more grunt. That's the LN/Bilt deep sump oil pan in background. Yes the tubes are low, and no they don't hit anything (yet!). [[might add pfister/gundo hack later this season -- if you look at the Soul replacement cans, they already have that as part of their rig. So, adding that mod to the stock rig would be way cheaper. Just thinking out loud... (pun)]]

Papamurphdog

I already had the Softronic tune and still working on if I need to retune... runs great as is wiht no re-tune, but not sure I'm getting the best from the motor now. shop is doing some research.

Soul Performance

We did decide to incorporate a pressure bypass into our side mufflers. I have the same thing on my 997.2S but with the OEM side mufflers (but factory headers) and it doesn't sound as good as our side mufflers. With X-Pipe and OEM Sides it's still too quiet.

Our side mufflers are freer flowing than factory from the outset which means better tone. When you step on the gas, you are getting a better tone and pitch with the pressure bypass tube.


If you have any questions on the 997.1 or 997.2 options (they are different) please don't hesitate to shoot me a DM, email or phone call.

Dave @ SOUL
dave@soulpp.com

Soul Performance

You shouldn't need to retune for high-flow cats with Softronic. My understanding is enough adaptation built into the tables to allow the car to adjust. Usually takes a couple of drive cycles. Maybe @Softronic can jump in.

Dave @ SOUL

CJonesEngr

I am in the process of installing my Soul Valved Exhaust (headers, cats, and mufflers) on my 997.1 C2S and have gotten everything buttoned up to the point where now I'm about to run the vacuum lines and install the solenoid. Any advice on where to mount the solenoid and how you routed the vacuum lines? I tried mounting where the instructions say (power steering bracket) but the picture looks like (possibly) a 996 and it was very tight to fit in that location. Thanks!

Dk27

The picture in the instructions is a 3.6L engine, and on your 3.8 it looks like there is a little less room near that bolt that holds on the power steering fluid reservoir. It really doesn't matter where you put the valve as long as it's secure and away from the accessory belt. As far as routing the vacuum line i brought mine down away from the ac compressor towards the rear passenger tail light. From there i T'd it to branch off for each valve, running the passenger side between the engine carrier and the back of the car. to route over to the drivers side i ran the line behind where the latch is and zip tied it along the way. For the drivers side drop it down between the engine carrier and the rear of the car and then snake up to the valve. How much slack to the valves is important. To tight and the lines pinches, too loose and the line will shake around and either will melt on the exhaust pipes or break from dry rot. Make it tight enough where the vacuum line is somewhat tight to the heat shielding on the bumper and not touching any of the exhaust pipes and ensure you also wrap the vacuum line with the heat shield provided.

if you have any more questions let me know.