Top Speed's Cat Back System Installation

[Nine8Six]

RE drone; not sure if this relevant but did the aftermarket exhaust swap also and wrapped the pipes from mufflers up to the front cats (asbestos wraps? dunno the name of that stuff). It cancelled all of the drone I was getting in the mid revs. Sounds fab now... in and out of car

Later wrapped the headers also. Keeps the bay cooler

Wroom wroom in tunnels here also Bruce loll big time (5~6k rpm and all man)

[BruceH]

Originally Posted by Nine8Six

RE drone; not sure if this relevant but did the aftermarket exhaust swap also and wrapped the pipes from mufflers up to the front cats (asbestos wraps? dunno the name of that stuff). It cancelled all of the drone I was getting in the mid revs. Sounds fab now... in and out of car

Later wrapped the headers also. Keeps the bay cooler

Wroom wroom in tunnels here also Bruce loll big time (5~6k rpm and all man)

Wroom Wroom, oh yeah

[gtoger]

Curious on what I should do now that the new exhaust is on. Will the EMC (computer) re-calibrate itself? Do I need to unplug the battery and let it all reset? Something else? Nothing?

[BruceH]

Nothing, except take it for a nice, long, spirited drive. It will learn

[Fintro11]

I had to cut the one pipe to make it fit, but holy **************** the sound is good

[BruceH]

Glad you got it on! Drone? Wait until you get some miles on it, it only gets better Remember, do not brush off the white fiberglass that you will see on the bumper. Rinse with water! Have a great weekend

[Fintro11]

comparison video

[Nine8Six]

Originally Posted by Fintro11

comparison video

Omg, man that sounds far better than mine :/ This mod has to be day-and-night for you. Nice vid comp

[Ottacat]

Does anyone know how loud these are in Db? I ask because I DE my car and both tracks near me have sound check restrictions.

[gtoger]

Originally Posted by Ottacat

Does anyone know how loud these are in Db? I ask because I DE my car and both tracks near me have sound check restrictions.

That's a tricky one to answer. How loud at what distance? Under what conditions? Anyone with a smartphone can get a db reading that won't be dead on, but will put you in the ballpark. But obviously the loudness at idle from 15 feet (5 meters for you Metric types) will be a lot different than 6000 rpm at the the same distance.

As a strictly non-scientific answer, they're not so loud as to generate complaints from my neighbors or my wife. I'd say generally no louder than my GMC pickup with the Duramax diesel.

[Fintro11]

Originally Posted by Nine8Six

Omg, man that sounds far better than mine :/ This mod has to be day-and-night for you. Nice vid comp

lol the one U pipe came off the clamp and was sitting a inch from the muffler :P haha

do you have the secondary cat delete ?

[BruceH]

Outstanding video Martin! Thanks for doing and posting. Sounds great

[happygilmour]

Question…I bought a slightly used Top Speed type exhaust with no hardware. Will the old mounting bolts to the trans work?
Should I replace the clamps that go from the U pipes to the cats with easy clamps or just use the old ones? Thanks!

[Slate 01]

Originally Posted by happygilmour

Question…I bought a slightly used Top Speed type exhaust with no hardware. Will the old mounting bolts to the trans work?
Should I replace the clamps that go from the U pipes to the cats with easy clamps or just use the old ones? Thanks!

Easy Clamps. In case you missed it in the numerous other posts on the subject let me give you a little reminder

INSTALL THE EASY CLAMPS GET 2" ORDER THAT SIZE FROM NAPA!!!!!!!!!

okay i'm calm again, geez (LOL)

[happygilmour]

Read my post. The question is do I need 2 or 4? Both ends of the U pipe or just the muffler end. And no word on the Hanger mounting bolts? Don't be such a turd Slate. Ok, I'm calm again too.

[Chard]

If you want to replace clamps (I'd recommend) I have a set for sale that I never installed before selling the car. These sleeves were recommended earlier in this post to cure exhaust leaking. Top Speed's Cat Back System Installation

http://986forum.com/forums/boxster-parts-sale-wanted/57342-parting-out-red-white-tails-pass-mesh-wind-screen-etc.html

[happygilmour]

Ok...now I'm stumped. I installed the 2" Easy clamp from NAPA...now called 2" SafetyClamp. I can't get them tight! I've tightened them down all the way and they still float on the pipe. My pipes seem to be 1 7/8" not 2". Anyone else found this? This is the connection from the muffler to the U pipe.

[BruceH]

Originally Posted by happygilmour

Ok...now I'm stumped. I installed the 2" Easy clamp from NAPA...now called 2" SafetyClamp. I can't get them tight! I've tightened them down all the way and they still float on the pipe. My pipes seem to be 1 7/8" not 2". Anyone else found this? This is the connection from the muffler to the U pipe.

From the muffler to the U pipe, I used the OEM clamps, the easy clamp was only used for the cat bypass pipe connections in my installation. I looked at my connections and the muffler to the U pipe is definitely a smaller diameter, so yes, you would need a smaller easy clamp for that connection.

[gtoger]

Unfortunately I do not have any wisdom for you on this one, as I had mine welded. I really don't like exhaust leaks...

[happygilmour]

Thanks Bruce. That's what I thought. So the info in earlier posts saying you can use the 2" easy clamps on the U pipe to muffler connect is wrong. And from what I can see the smallest Easy Clamp is 2".