How will the LM2 compare to my Flowmaster catback? I BELIEVE it's the 40 series (the car already had it when i bought it). Will I gain some more HP and how will it change the sound? Also, how was the install.? Any welding or just simple bolt on? Sorry so many ?'s. Thanks

 

You have the 80 series, it's the standard "I put a flowmaster on it" exhaust. 40's have inlet on one side, and either 1 or 2 outlets on the other side.

It will be louder and you'll pick up some HP, should be a simple bolt-on after removing the flowmaster and stock mid-pipe (I-pipe). You may need to cut the old over-the-axle section out though.

Power gains will be nothing to write home about from stock to LM2, but might be felt from Flowmaster to LM2 considering the Flowmaster is more restrictive than stock. I personally love the sound of a Flowmaster 80, and would keep it along with adding a 3" electric cutout if you want to be loud and make a little more power.

 

when i swapped from my flowmaster to the LM1, it was like going from stock to the LM. its just plain loud.

 

get rid of that choke-master exaust, pick up the LMII and be happy.....

 

Mine also had a 80 series flowmaster on it. Saw a nice gain with the LM2 and havent looked back.

Except on the freeway @ 80mph around 2krpm

 

that is the only down side (doesnt sound bad, just annoying)... but i got use to it after a few long trips.. i dont have tips on mine so it comes out underneath the car which makes it a little louder...

but supprisingly after LT's and ORY the highway driving noice didnt really increase (but in town sure did)

ohh and BLK02TA shouldnt u be under 2k at 80mph since ur M6..

 

i went from stock to lm1 and the car was much louder and felt stronger, i now have lg tubes and cats it nice at idle loud at 1/2 throttle and insane at wot. i wouldnt change it for the world. if you want a little quieter with a little less rasp get the 2. the install is tit the lm is all in peices. good luck