How much on the Fabspeed Imported Sport Racing Catalytic Converters with Muffler Bypass Pipes Porsche 997 TT 07+?

What to swap the bypass pipes for to make it less noisy? Will doing so decrease HP or TQ gains?

Is vividracing.com reputable?

Thanks

 

If you are going with bypass pipes you shouldn't be worried about making it less noisy, thats part of the package and the whole point.

With Fabspeed you can just get the exhaust without the bypass and see how you like it first, I personally love it, the sound is great, and you will definitely feel the gains. Bypass pipes I would reserve strictly for track vehicles only.

Vividracing is great I've bought a bunch of stuff from Dan there: pss10s, wheels, sway bars, hes helping me out with seats, etc.

 

I can vouch for Dan @ VividRacing, he does put up with my OCD a$$, i am not easy to please. I bought all my mods from him so far, no regrets, HREP40's, GMG sway bars, PSS10's, Tires, my C6 Coilovers and now my stiffer springs for my 997TT.

 

I believe Stephen at IA dyno tested fs at 21hp. Bypass pipes are rediculous on the street. Bottom line, there are a lot of great exhausts out there, pick one if you don't like it, keep changin' 'em like I do.
I've done biz with Dan, he'll hook you up.

 

if you going to buy it then test the gain in your local dyno place you will know nothing.The only way to prove it is test it on the same dyno machine the fabspeed used,or maybe have a pre-dyno before you fit the part then dyno again after it fitted.

If you look different tuner's website for their claimed "gain"s you will see big different of numbers for same mod between their dynos.Look the below dyno pics,1 from fab(dynojet) 1 from awe(mustang),both with only 200-cell performance exhaust fitted on bone stock car and 93 octane.Fab one has 433awhp and AWE one has 461awhp.Would you believe the AWE exhaust is really that good to pump out 30 more awhp than fab one?Its the machines reading different...

 

BTW,the AWE stock 997tt dyno numbers are un-believeablely high..How come it get 440awhp....thats about 540hp from stock crank?!?!

 

+1 on that.

 

Interesting point Lintc . It actually raises the question of how accurate is a dyno? After all theres different machines, climate, fuel, cars, part installation and fitment, altitude etc... so many variables that any reading is somewhat of a snapshot of that moment .

It's like weighing ones self on different days, different scales, before or after eating etc .

I'm beginning to wonder if its better to specify a trend than an actual number.

I think the numbers tend to point towards the validity of a claim --where reduction of weight and backpressure serves some benefit . How specific that gain may be seems more open to doubt.

 

I have bypass pipes and I wish it was less noisy, if you already have the fab stuff, get the fab muffler, am not too sure about the power decrease. I suspect you have have more bottom end punch?

 

Raiyu,
I know you've been asked many times.
But here it goes.
Stock M5 vs stock 997 turbo.
You impressions on power?
Do you miss anything about the M5?
thanks

 

Im not clear on this bypass stuff. Whats the difference between bypass muffler and bypass pipes??

 

Bypass is no mufflers at all-loud as hell.
All chassis dyno numbers are basically meaningless to me, only a real engine dyno with a water brake will be accurate. But who wants to drop their engine to dyno mufflers?

 

What about bypass pipes?

Fabspeed's line up of exhausts is confusing.

 

No idea, not really into their stuff anymore.

 

Ive run on the highway a couple of times against the M5 with my brother in it, no passengers and both were stock. We started from about 60mph, both cars were very similar, the turbo was walking away just slightly, but not by much.

We werent really doing it for comparisons sake just for fun. However recently with the exhaust I ran against a stock M5 which had one passenger and I walked away.

As for comparison, oh man thats tough, two totally different cars. The M5 is an everyday sedan with a monster engine, however I had SMG and the car was just no fun unless it was screaming at 6K+ RPMs. But you had all the creature comforts, plenty of space, cargo space, bluetooh, sat radio, nav (not a problem with 09 turbo), I didnt worry about bottoming out. It was just a fun car. I drove it across the country last summer (3 weeks - 8900 miles) and 70% of that trip I was solo and I have to say it was the perfect car. Easy to drive, but fun enough that I didnt get bored, and had all the comfort you could ask for.

The turbo is totally different, it involves the driver and its just more pleasing to drive slower because you get so much feedback and you feel so connected with the car. With the M5 I felt I was driving way too recklessly because under 6K the car didnt feel alive and it just wasnt any fun.

Overall I think its not a car comparison but a driver comparison. If you are a guy who always prefers stick you will like a manual turbo more. If you are a guy who likes SMG then the M5 is for you.

My turbo gets driven everyday, Im coming up on its one year anniversary on the 26th (Feb) and I've got 27,000 miles on it. So its obviously a car you can drive everyday and enjoy as well.

For my money turbo hands down no comparison.

Anyway as for straightline, if you dont count 0-60 they are relatively close, depends on which gear both cars start in. Definitely not a night and day difference between the two.

And as far as missing the M5, my brother still has the M5 and I drive it on occasion, I was actually driving it this morning, the only thing I miss is the ability to get in out of the car easily (my turbo is lowered like crazy and has race seats lol), other than that, I'd take my turbo any day of the week in any weather.