944Hybrids: 924/944/968 and 928 V8 Conversions
Would you like to react to this message? Create an account in a few clicks or log in to continue.
HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

Comments: 0

Latest topics
» 1987 944 Turbo --> LS
Exhaust mods EmptyToday at 8:36 pm by Reason

» backwards LS6 intake
Exhaust mods EmptyToday at 6:24 pm by murrayg

» WTB C5 2 piece bell housing
Exhaust mods EmptyToday at 10:39 am by murrayg

» Testing the waters. I have a working '83 944 with a '94 LT1 that I want to let go.
Exhaust mods EmptyYesterday at 7:44 am by Bmillar

» FS: 1987 951 LS
Exhaust mods EmptyYesterday at 6:30 am by carr911

» Totalled 1985.5 Porsche 944
Exhaust mods EmptyFri Sep 18, 2020 3:53 pm by Bmillar

» Clutch wont disengage!
Exhaust mods EmptySun Sep 13, 2020 10:51 pm by RobotMachines

» tachometer
Exhaust mods EmptyFri Sep 11, 2020 10:21 am by smkn951

» 86 Porsche 944T LS1 swap begins
Exhaust mods EmptyThu Sep 10, 2020 9:31 pm by smkn951

» stalls when braking
Exhaust mods EmptyThu Sep 10, 2020 10:55 am by spence

September 2020
MonTueWedThuFriSatSun
 123456
78910111213
14151617181920
21222324252627
282930    

Calendar Calendar

Log in

I forgot my password

Exhaust mods

Go down

Exhaust mods Empty Exhaust mods

Post  docwyte on Tue Mar 06, 2012 9:27 pm

When I had my car built, I went with the S&P headers (Eric hadn't come out with his long tube headers yet) test pipes and a dual 2.5" exhaust going into a single rear 14" Magnaflow rear muffler.

The car sounded super cool, but was incredibly loud. To the point that with a passenger in my car on the track, with my in car intercom turned all the way up, we still couldn't hear one another.

The car was also a bit much to drive on the freeway, lots of noise, couldn't really hear the radio, never could hear my cell phone ring, etc.

I decided I had to do something to tone it down a little, so with some measuring I found that while the 22" Magnaflow muffler was a bit too tight of a fit, the 18" Magnaflow should work well. Got one and had it put in and much to my delight it's definitely taken the edge off the exhaust note.

It's still deep and rumbly and still quite a bit louder than a stock F body, but it's also substantially more quiet than before. I took a quick lap down the street and it's far more pleasant. Supposed to snow tomorrow, so won't be able to take a longer drive, but I'm pleased!

Next up, 965 front brake rotors and Big Black front brake calipers. Then Eric's new fuel filter kit...

docwyte

Posts : 1389
Join date : 2010-07-18

Back to top Go down

Exhaust mods Empty Re: Exhaust mods

Post  Arthropraxis on Tue Mar 06, 2012 10:29 pm

I have single 3in exhaust with two cats and an offset in/center out 18in magnaflow. The noise can't be more than stock levels. One of my kids, 7yo girl, said she wanted it to be a little louder.
Arthropraxis
Arthropraxis

Posts : 1103
Join date : 2009-09-02

Back to top Go down

Exhaust mods Empty Re: Exhaust mods

Post  docwyte on Wed Mar 07, 2012 8:07 am

I'm sure if I put cats in it'd be even more quiet. Found the cats were worth 12rwhp!

docwyte

Posts : 1389
Join date : 2010-07-18

Back to top Go down

Exhaust mods Empty Re: Exhaust mods

Post  Porch on Wed Mar 07, 2012 8:10 am

I had a magnaflow on mine for a while and it was a really enjoyable exhaust note. Now i have a SpinTech muffler and it's a little more aggressive, but quiets out at cruise. I have cats on mine too, they really keep the noise down.
Porch
Porch

Posts : 851
Join date : 2009-09-02
Age : 39

Back to top Go down

Exhaust mods Empty Re: Exhaust mods

Post  docwyte on Wed Mar 07, 2012 8:12 am

The "high flow" cats work well when they're new, then they crap out. Since the car is basically a track car I removed them and put in test pipes. When the car needs to get tested I'll put the cats back in, that way I'll pass since I haven't destroyed them on the track.

docwyte

Posts : 1389
Join date : 2010-07-18

Back to top Go down

Exhaust mods Empty Re: Exhaust mods

Post  944-LT1 on Wed Mar 07, 2012 3:44 pm

You can bring down the noise quite a bit with resonators where the cats go. Just another option.

_________________
[You must be registered and logged in to see this image.]

[You must be registered and logged in to see this link.]
944-LT1
944-LT1
Moderator
Moderator

Posts : 1263
Join date : 2009-06-09
Age : 98
Location : NOTRE DAME

Back to top Go down

Exhaust mods Empty Re: Exhaust mods

Post  andrewporsche on Sat May 12, 2012 9:55 pm

Arthropraxis wrote:I have single 3in exhaust with two cats and an offset in/center out 18in magnaflow. The noise can't be more than stock levels. One of my kids, 7yo girl, said she wanted it to be a little louder.

Thats an amzing 7 yo you have there Very Happy
Thanks for the tip..I'll try and go that route..
andrewporsche
andrewporsche

Posts : 29
Join date : 2012-03-13

Back to top Go down

Exhaust mods Empty Re: Exhaust mods

Post  robstah on Sun May 13, 2012 2:53 am

Two mufflers seems to be a worthwhile suggestion if you aren't going to run cats.

robstah

Posts : 351
Join date : 2009-08-28
Age : 34
Location : Athens, GA

Back to top Go down

Exhaust mods Empty Re: Exhaust mods

Post  andrewporsche on Sun May 13, 2012 10:58 am

robstah wrote:Two mufflers seems to be a worthwhile suggestion if you aren't going to run cats.

We are bound by yearly emissions here so I need to consider cats..my current 951 have bolt on cats that I re and re every year..but its a PITA...
andrewporsche
andrewporsche

Posts : 29
Join date : 2012-03-13

Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum