A 2k+ Muffler or a Stillen Muffler?

What are the major differences I will hear and will the width of either one cause a problem with the body? (Like do i need to make the muffler hole bigger?

What about hangars/welding?

Thanks!
IanS

 

I think with a s/c that the 2k+ muffler won't help at all, it still has a small inlet and outlet. It might be better than the stock 4th gen muffler though if thats what you have. It will be quiet even at full throttle from inside the car, but it will have a little growl from outside the car. A stillen muffler will be extremely loud. If you like it loud then that is the muffler for you.

 

Hmmm....

Extremely loud as in breaking the law loud???

Anyone have any hands on experience with the associated power gains of each muffler? (Like does anyone have a 5th Gen that has upgraded to the stillen exhaust with SC?) <Kev, you out there? What do you have?>

IanS

 

neither is, get a aftermarket Greddy or ApexI which is 2.5 " pipe. That would be a bigger pipe and muffler then stock and would push exhaust out better.



Jay

 

The Stillen is 2.5 also, isn't it!?!?

 

I can't remember..do you have a y-pipe, cat, b-pipe?

If you have full exhaust, the stillen will have terrible drone, especially if you have a b-pipe with no resonator. It will be breaking-the-law loud at full throttle. I went with a hooker aerochamber 2.5 muffler, and also a dynomax resonator, and there is no drone and it is fairly quiet except when at full throttle, then it is pretty loud. I used to have an arospeed muffler that would be comparable to the stillen, and the music would not cover the sound up, and people in the back seat could not hear each other talking.

 

I recommend the Apex'i WS. it still growls, but is relatively quiet compared to the GReddy.

 

yes, but I only have 2 choices:

Stillen or 2k+

That's all.

 

AFter I get my project off the ground, I will also have to re-evaluate the 2k muffler. It *might* be too small as some have said. If you haven't found one by then and if I've decided to use something else, I'll let you know.

But honestly there are a million mufflers you can use. Not all of them are loud. You might want to look into Borla, Remus or Flowmaster quiet series.

 

Apex'i is not a great exhaust for a s/c max though, because the piping is only 2.25". A s/c running that much boost needs at least 2.5 for ultimate power, maybe even 2.75 if you can find it.

 

having an SC and getting a CatBack for it doesn't matter that much in the scheme of things apparently.

i was talking to Loren, who sold me my SC, and he said he went from a full stock exhaust setup to a Greddy (I think it was greddy) 2.5" CatBack and a y-pipe.

heo nly gained 7hp with a 3.25" pulley.

I've heard some people say that a catback alone gained 30hp with a SC, but have yet to see a Dyno.

Loren's been doing this a long time, so I tend to believe him.

I'm more doing this for aesthetics than to gain hp, although a 3-5hp gain would be nice also.

 

Hm...interesting. I'm running the Apexi exhaust with my SC. I can't be sure if it's restricting me a bit or not.

 

I have a Stillen b-pipe which I measured at 2.25". This leads me to think that their muffler is only 2.25" as well, but I don't know for sure.

Call Stillen and then you can tell us!

 

I went from a Stillen SS muffler to a GReddy cat-back... didn't dyno though.

 

What you mommy said you can only have those two exhausts, what the hell man don't limit yourself.?

Personally, I say you go all custom (and take the cat out while you're at it). Get a good shop to do mandrel bent piping back like 2.75" and then throw a high-quality 2.75" muffler on the back, an unrestrictive one (finding one may be hard, but look around at other car setups, flowmaster for camaro's, dynamax, etc.).

 

He gained 7hp from a catback AND y-pipe? That sounds like a load of horse **** to me considering I gained more than that with a y-pipe alone and I'm not even s/c'd yet. What was wrong with his car to get such a poor boost in hp from a y-pipe?

And I'm not 100% familiar with the design of the 2k muffler, but the stillen one is a straight-through. Which means the exhaust gets out faster, but it's louder. Not illegally loud mind you, but a LOT louder than stock.

 

Are you having flashbacks of when you used to have a SC.

Scary, scary nightmares that keep you up at night.

 

No, he got another one.

 

have you looked into a custom mandrel bent aplication. They are not as expensive as you might think.

that way you could run a 3 inch exhaust...also I think sx7r is working on a 3 inch y pipe with someoen as well.

Those 2 combintaions on a SC'd car would yeild some gains

My 2 cents

 

Qtec electric cutout

The F-body guys love 'em. You can have the best of both worlds...

 

it's possible I misheard Loren. Actually, the more I think about it, he gained the +7hp with the Catback alone.

i already have a WSP Y-Pipe.

And no, it's not my mommy telling me I only have 2 choices, it's my pocketbook, which has far greater authority.

I can buy the 2k+ muffler for $150 shipped, and either keep it or trade mtrai760 for his Stillen.

IanS

 

I think there is very little hp to gain out of the catback

ideally, 2.5" mandrel bent all the way through including muffler extension pipe. I think 3" is overkill..

MY .02 ONLY.. I never dynoed my different combinations but never felt much difference.

stock.
rt cat + :
courtesy b + extension piece + oem 4th gen
courtesy b+ straight ext. + oem 4th gen
courtesy b + oem 5th gen
courtesy b + hks for 2k
mandrel 2.5" b + hks for 2k

the hks did quiet down a little with the mandrel b.

 

Are you boosted?

 

Matt: see 96sleeper's post.


96sleeper:

 

No is reality for sure he got a V1!!seriously!!

 

Hey now, I wasn't laughing at you so much, just seeing his question was funny.

 

It's alright, you can laugh. I get a good kick out of it myself.

 

yes ian... ummmmm sigpic

 

Just think about it Mardisgrasmax is running the 2k muffler and he has one of the most powerful maximas out there. To me the quietest exhaust is the best. I personally have a wspd aluminized ypipe a 2.5" carsound cat a custom 2.5" catback with a pro-flo twister silencer with a 2k I-30 infinity muffler which supposedly flows better than the maxima one, it has a different part#, 222hp max 227hp I30. I haven't dynoed but it is almost as quiet as stock and does flow better above 2500rpm.

 

But we don't know how much power he would have if he had a higher flowing exhaust. I think even he is changing out his exhaust for a full 3" one.

 

Haha.....sorry about that.

I've already made the deal with mtrai760 to trade the 2k+ muffler I bought for $150 for his Stillen exhaust.

But now you've got me thinking.

But unfortunately, I already told him I'd do it.

IanS

 

Ian...I don't have a SC, but I will take you for a ride in my car this weekend...ypipe, cat, and stillen catback. You can decide for yourself if it's too loud.

 

Don't sweat it Matt.

I think it will probably be a bit louder on a SC'ed Max, with all the extra airflow.

But I'm a man of my word.
Unless it's insanely loud, I'll do it.

You have an aftermarket Cat?
I didn't know that.

IanS