I had ATXAutosport here in Austin install the IPD Plenum, FVD Piggyback and FVD Brombacher headers and just got the car back today. The sound is improved with the addition of the headers, more pops and burbles and a throatier growl at idle.

I thought the car was fast before but it's pretty unbelievable now. I took it out to my favorite county road which is not too flat and ran some quarters. I ran one on the way out that was close to flat and didn't get a good 60ft time, it was 1.86s but the quarter was 10.783 with a trap of 131.288 mph. That is amazing for not doing anything other than just hitting the accelerator from a dead stop and I didn't use launch control on that one which is why the 60ft time wasn't so great.

The other quarters I used launch control and the 60ft times are much better, one was less than 1.6s. The other quarters are uphill and so the trap speed isn't as high. I got 10.571 at 129.5 for my best uphill quarter, so if I had used launch control on the first quarter I could have seen 10.5 at 132. I have a standing half mile time of 17.11 @ 154.00 and a 0-60mph of 2.77s.

On Friday I am going to take it out to my perfectly flat mile and run it there to see what it can do. I should get sub 10.5 at about 133 if it goes according to the other Vbox quarters I did when I got the car new.

This set of mods cost me $7400 parts and labor, a pretty good result for the money spent IMO. The 7.5s 60-130 is a 1.4s improvement over having just the exhaust. This is where I was hoping to see a big gain in the car.

 

131-133 mph trap is fantastic and what my 720-750 bhp 996 TTS does (6MT)... 620 whp

 

Those are some serious numbers you're posting! I am out of range for good temperatures plus I have snow tires on my stock TTS. I tried launch control at ~20 deg. F. ambient and got a 2200 rpm launch

How is your exhaust sound at 1800 - 2200 rpm while cruising? is there a droning sound? I will be looking to swap out the stock system to a Fabspeed, GMG or ? unit.

 

We have nice weather in Texas this week, it was 75 F today when I ran and had the tires warmed up from driving out to the spot. I will do another video of the exhaust tomorrow in the morning so you guys can hear the difference compared to the headers being installed.

I have the FVD "sound exhaust" with high flow cats. I want to do some drive by videos so the sound can be better appreciated. I have been told it's impressive outside the car from people that were on a drive with me. There is no drone with this exhaust at low RPM but I tend to run it above 2000 anyway so if it was an issue, it's not.

 

That would be great . I'm looking for the right exhaust.

 

Let us know when you go to a track and run those numbers. Congrats

 

good job

 

Nice Results! Glad to hear that you are happy with the software and headers.

 

Yeah, check the video I made. I was also really happy with ATX, Joe and Jason made it a good experience for using an outside shop. I will probably just keep doing my service with them.