MetallicBluews6

iTrader: (2)

I recently purchased a 2002 "WS6" 2 WEEKS AGO with 17k Miles. I just put in a SLP LODMOUTH EXHAUST. Does anyone have proof or dyno results that this exhaust adds horsepower??? The only other mod I have is a "K & N" air filter and which is just so I wont have to replace an air filter every oil change or so.
I plan to put in a SLP Y pipe this weekend. Do you guys advise that?? Get back to me on that guys!!!


Thanks for your help.

God of Thunder

ory+loudmouth might not sound too purty...i would keep the cats

Hammer231

The factory WS6 exhaust actually flows pretty good but didn't have enough rumble. I ended up buying the Magnaflow catback which gave me more of the muscle car sound I was looking for. You might see a few hp with the LM over the stock system but I think it's mainly a sound thing.

Angus

iTrader: (2)

the SLP y-pipe only replaces the stamped flat section of the y-pipe.

01blueSS

Well I was one of the people who bought exactly what you are getting ready to do. The LM sounds great in my opinion but I don't know if adds that much power, I would say maybe 5 h.p. The y-pipe is NOT worth the money. Honestly you are looking at like 1-2 h.p. I love the sound of the LM and wouldnt trade it but the y-pipe was a waste. save yourself some money and don't get the y-pipe.

Just Floor It

The SLP Loudmouth is actually the BEST flowing exhaust out, followed by Magnaflow...

SLP LM flows ~2000 CFM
Magnaflow ~1200 CFM

The TSP Rumbler should flow about the same as the SLP LM, they are a similar design...

MetallicBluews6

iTrader: (2)

So Will My Loud Mouth Exhaust Sound Louder If I Add The Y Pipe??? So Will It Add Any H.p?? Or Rob Some H.p.?? I Would Appreciate It If You Guys Could Respond!! Thanks!!

Angus

iTrader: (2)

Don't waste the money on the y-pipe. Save the money so when you do headers then you do the off road y-pipe. Everyone loves the loud mouth but when it gets too loud they replace the resonator with a bullet and they love it. No cats on any exhaust will make it louder. WWW.LS1SOUNDS.COM

BizZzatch350

iTrader: (33)

i agree with Angus, wait for headers. I have a LM with a stock cat and it sounds good. I have heard it going two ays with headers, either its to loud or people still like it.

jwitt2

iTrader: (37)

i heard the GMMG was pretty good, on adding HP and very loud sounds, it's a little more expensive but it will give you more HP/.

ss®

hehe, Im in the same situation and looking for a exhaust. Local body shop around here has Magnaflows + Flowmaster... I don't know which ones are good. I would order them off the internet if someone would come up with a good match for me. I'm looking for a good exhaust (semi-loud) that I can rev it up and be heard loud and clear.

WS62GO

I have Loudmouth on Stock Car, It's Loud but not a daily driver so it is bearable.
I had the LGM Y pipe but never got it to stop knocking so I went back to stock and am sooooo happy. Quieted up the Loudmouth also.
Its a Cali car so I don't want to hassle with the smog ****'s over longtubes so for now I wont be changing any exhaust stuff .

LT1Burnout

also live in cali.. edlebrock offers air-injected LTs, havnt purchased them yet (sweating the install), should pass smog..

Caribe

iTrader: (1)

To my knowlege the SLP LM adds around 8-12 rwhp. As for the y- pipe I would just keep your stock one until you get headers. Mid Sept I will be adding headers. I will be doing a custom y-pipe with high flow cats and a flowmaster y merge collector. For great info read all of JRP's stickys on top of these pages. https://ls1tech.com/forums/showthread.php?t=139142

Later

02WS6Bird

iTrader: (2)

i have the Y-pipe a previous owner thing...it gives a lil mroe throat slightly better flow...but if you want headers fdont do it!...the previous owner on my car did the exhaust i did the intake...im gonna change this exhaust cuz persoanlly i dont like it...its good for scaring people but i wnat it better....so im getting kooks or QTP (prolly QTP Lt's) catted Y pipe and GMMG

compuvision02

I have a Loud Mouth through an off road y-pipe, sounds fine to me.

compuvision02

Oh and mine is a daily driver and I love the sound. I don't get why people say the Loud Mouth sounds like crap, I love it.

transamws686

iTrader: (4)

I had the loudmouth but when the LT's came in even with cats it was to much of a rasp. as for the magnaflow, I love it I now use it with my kooks set up and it souds great.

compuvision02

I don't really like the sound of Magnaflow.

01 Red WS6

iTrader: (4)

Im thinking of getting a TSP rumble exhaust and it has a bullet in it instead of a resonator. Will the rasp be less with the bullet?