Fabspeed or Dansk?

84Carrera911 · 09:12 PM

I'm trying to make a final decision on what I want to do for my exhaust system on my 3.2 and I narrowed it down to three options:
1. Stock heat exchangers, Fabspeed cat bypass/euro premuffler into a muffler bypass pipe

2. Stock heat exchangers, Fabspeed cat bypass/euro premuffler into a dansk 28 lb sport muffler

3. George's headers into a two in, two out Dansk 28 lb sport muffler

Is it really true that Fabspeed (#1) will make more power than a full header system(#3)? That is what was said on the fabspeed website, but it could be biased. I'm looking for the one that makes the most power without being too obtrusively loud, and without resonance, although i can put up with some noise. BTW, which would be the lightest system? Thanks..

Emission · Emission's Garage

It sounds like all you are using (of Fabspeed) in #1 is their cat bypass... correct?

I can't see how that alone will make more power than a full header system.

I just ordered a dual outlet Fabspeed muffler for my 930 (one flowthrough and one dump pipe), but I don't expect much in the way of horsepower as my headers will be stock (for now). Do a search on this site, you will find tons of valuable advice ~ pro and con ~ on all systems (and it was one reason I called Fabspeed to talk to someone before I placed my order).

HardDrive · 04-28-2005, 11:00 PM

I have to be honest, I think that Fabspeeds horsepower claims are a bunch of crap.

I e-mailed them and asked about what kind of horsepower I could expect from a cat bypass tube and their muffler on my 82 sc......22HP was their response. OH PLEASE

I supose their custom air box will get me another 15hp?

Option D) SSIs with a Dansk or Monty muffler. A setup with that has some actual dyno data to back it up.

Eric Coffey · 04-28-2005, 11:52 PM

Option #5: George's headers + Monty.

Option #6: George's headers + individual Phase 9 silencers.
(Coolest IMO, and probably the lightest system)

Steve@Rennsport · 04-29-2005, 12:11 AM

Quote:

Originally posted by HardDrive
I have to be honest, I think that Fabspeeds horsepower claims are a bunch of crap.

I e-mailed them and asked about what kind of horsepower I could expect from a cat bypass tube and their muffler on my 82 sc......22HP was their response. OH PLEASE I supose their custom air box will get me another 15hp?

Option D) SSIs with a Dansk or Monty muffler. A setup with that has some actual dyno data to back it up.

Amen for THAT,....

You are SOOOO right. Creative marketing at its finest.

I'd agree; the SSI/Monty combo works very well and unlike the Dansk, Monty mufflers are stainless steel INSIDE as well as the outer shell. A quick look around inside with a Borescope shows a big difference in materials and build quality.

Just one person's opinion, of course,....

dickster · 04-29-2005, 05:32 AM

i have the std exch plus dansk bypass and twin sport muff. it will get you around 10-12 hp (i dynoed mine) with no resonance.

its nice, but if i had the cash i would try a monty.

oneblueyedog · oneblueyedog's Garage

I've got an original Euro Pre on my rebuild and I don't know if it made any difference since I didn't dyno it before the rebuild witht the cat. There's a lot of research in topic if you search. The point being a similar HP increase as a SSI setup if you use a Pre Muff and a single in/dual out setup. There's some kind of graph posted comparing the two. It's similar.

KTL · 04-29-2005, 05:44 AM

If sound is a major concern?

I'd go with the cat bypass pipe. And choose a Dansk cat bypass pipe. The Fabspeed unit, while quite nice looking, hasn't fit all that well in the past few years.

chuckr · 04-29-2005, 05:49 AM

I just put on the Fabspeed Euro Pre muf and dual outlet muffler.
The sound is fantastic !!
The power.... I haven't dyno'd the car yet, but the seat of
the pants dyno feels good.
I paid as much to have the poor fitting muffler installed as I
did for the muffler itself !
Very bad customer service !!
Chuck

oneblueyedog · oneblueyedog's Garage

You might want to read up on the Cat bypass (test pipe) and its HP figures.

jaydubya · 04-29-2005, 06:38 AM

If you don't need heat, I'd go with George's headers and Monty muffler. Otherwise, SSIs and Monty.

JeremyD · JeremyD's Garage

Yeah - if you go with the stock exchangers - then you want a premuffler - not a bypass (straight through pipe) if you have the cash - then the headers are going to give you a little more grunt (torque) but not much hp. Obviously to make all the components work together a tuned Steve Wong chip.

My wrench - only recommends an exhaust change from stock if the cams are changed. Otherwise he states that the bang for buck is pretty low.

PhatRedHead · 04-29-2005, 07:22 AM

Quote:

Originally posted by HardDrive
I have to be honest, I think that Fabspeeds horsepower claims are a bunch of crap.

I e-mailed them and asked about what kind of horsepower I could expect from a cat bypass tube and their muffler on my 82 sc......22HP was their response. OH PLEASE I supose their custom air box will get me another 15hp?

Option D) SSIs with a Dansk or Monty muffler. A setup with that has some actual dyno data to back it up.

i bet the sticker they sent along too with the system is worth AT LEAST another 7 also!!!

84Carrera911 · 04-29-2005, 08:18 AM

I have no need for heat, all my ventilation other than the oem exhaust is removed. I'm kind of stuck on the Georges headers, but still need to make a decision on the muffler. From what it sounds like, I think the monty is a little too pricey for me, what is the price anyhow?? My main concern for the muffler is no resonance, as long as its not super loud its fine, and i would prefer it to be pretty light if possible. What are the individual phase 9 silencers?

jaydubya · 04-29-2005, 08:25 AM

Quote:

Originally posted by 84Carrera911
I have no need for heat, all my ventilation other than the oem exhaust is removed. I'm kind of stuck on the Georges headers, but still need to make a decision on the muffler. From what it sounds like, I think the monty is a little too pricey for me, what is the price anyhow?? My main concern for the muffler is no resonance, as long as its not super loud its fine, and i would prefer it to be pretty light if possible. What are the individual phase 9 silencers?

I've had the Monty 2-in 1-out muffler with SSIs for 3 weeks. NO resonance. I think it is considerably lighter than the Dansk - on another thread recently someone said it's about 16 lbs versus 25 or so for the Dansk. The sound level is very good. If you want loud I understand the 2-out is louder (but no gain in hp).

I purchased mine from Aase:

http://www.**************/monm311975si.html

$716.

Let me know if you need more info, or a sound file or anything.

84Carrera911 · 04-29-2005, 08:27 AM

Arent the monty muff's only single inlet though? Would this work with georges headers?

jaydubya · 04-29-2005, 08:31 AM

Sorry I pointed you to the wrong page. The one I pointed you to is single inlet. With SSIs/headers you need one of these:

http://www.**************/por91119.html

I have the third one down.

84Carrera911 · 04-29-2005, 08:38 AM

if you don't mind could you post your sound clip?

jaydubya · 04-29-2005, 09:15 AM

Here is the car.

Here is the best I can do right now for the muff:

Carrera3.5L · Carrera3.5L's Garage

One suggestion: If you stick with your header decistion, don't go overboard on the header diameter (smaller 1 1/2" is better than larger 1 5/8" for street use on a 3.2L IMO) and do some research on the muffler inlet flange diameters from the muffler mfgs. you are considering to make sure they properly mate to the headers.

Ralph