Corny40

iTrader: (7)

Well, I got my exhaust done today. Here's what I did: Flowmaster 40 Series Deltaflow mufflers, 3" from the cat to the Y, res delete, 2.5" from the Y to the mufflers, dual walled chrome tips 2.5" in to 3.5" out (thanks to BuffSS for finding these). IMO, the video kinda makes it sound like a Magnaflow system, at least the video clips of them, but it's really not a true representation of the sound, close though. What do you expect from a microphone that's only 1/8" long?

Anyway, I'm real happy with what I got, but I'm not sure how long I can go w/o the resonator? Enjoy!!!

kissmyss03

iTrader: (1)

that is one of the worst videos. lol

Compg

Corny40 who did this for you and how much did it run you. I'm in San Antonio and that is by far one of the better "made" set ups I've ever seen on a W-body. If the price was right I might be taking a 2 1/2 hr road trip.
Tate

Corny40

iTrader: (7)

I know. I know. I was in a hurry. I know that's not a good excuse, but it's the only one I have.

Or, are you talking about the "quality?"

lovemyls4

awesome setup how much did everything run ya?

Corny40

iTrader: (7)

I got the Flowmasters (stainless) and tips from Autoanything dot com for about $250. The shop charged me $250 cash, out the door. They're open on Saturdays.

Kazmaniac

Nice tips!

So - what's your thoughts w/o the resonator?

Corny40

iTrader: (7)

Yeah, I thought you'd like them.

Well, the drive home was LOUD, but I took it out later in the evening and got used to it a little. I am a little worried though, b/c I still have to install my K&N CAI later this week, and that may just send me back to the shop for that resonator. We'll see.

lovemyls4

1) Would i see any noticable gains from just mufflers?

2) what exactly will void out the warranty? ie. CAI, or somthin like cornys catback??

Corny40

iTrader: (7)

1) Just changing out the mufflers, you probably won't get much, if any, gains. I opened it up a bit from the cat back, and the SOYP dyno definitely shows a slight gain. I'm doing supporting mods, so I think my cat back will definitely help.

2) I don't really think a CAI or catback will void your warranty. In fact, I'm 99.9% sure the cat back won't. The CAI, I don't know, but you can always put the stock air box back in B4 you take the car in.

BuffaloSS

iTrader: (3)

Read this thread about aftermarket air filters...it comes straight from GM: https://ls1tech.com/forums/ls4-performance/670909-over-oiled-air-filters.html

Also, an exhaust couldn't possibly void a warranty unless the piping was installed incorrectly and burned a wiring harness or something.. Other than physical damage from the exhaust, what could it hurt on that end of the engine?

nighthand

Even that info from GM should not void the warranty (at least on other areas).

Would a MAF that is affected like this cause permanent problems to the transmission or other parts or would it just be a temporary issue until the MAF is cleaned?

Mgpeagle

iTrader: (6)

The black piping looks bad ***! Nice looking system.

-Mike

BuffaloSS

iTrader: (3)

It's temporary, but leaving it long enough may cause permanent damage. In this instance, if you're having surging/bucking/weird shifting issues, clean of the MAF before sending it to the dealer. Hell, even consider reinstalling the OEM box.

nighthand

Would I only notice this bucking at WOT or would it happen on a regular basis. Around my area, I don't get a lot of chance to WOT unless I am on the highway and already moving at a good clip, but I have not noticed any thing thus far.

Hmmm, may be worth cleaning the MAF anyway if the weather is nice enough this weekend.

Thanks Buff