seeyaa

Just bought one friday 06 impala 56k so far so good nice power. Love that v8 rumble on start-up. Now i need to convince the wife that i need exaust and a tune.

06MonteSS

well, a tune anyway, and if you want better sound, just swap out the mufflers...

going to the 3" exhaust system that's available from magnaflow will cause you to lose your low end power/torque, cuz the pipe's too big... don't need that big of a diameter pipe on our cars...

I kept the stock pipe, and just put on some flowmaster super 40's, and it sounds amazing - plus I still have all my low end power/torque...

and a tune will definitely help as well, especially with these auto trannies... whether you get a diablo predator, or go the hp tuners or custom dyno tune route, you will get better performance and gains.

oshia86

3" isn't to big for our cars, look at all the v8's that come with dual 2.25-2.5" pipes, they will flow more than a single 3". I had 3" on mine and the low end was still completely there. Even removing the resonator will help with the sound alot. That was one of the first things i did to mine.

Brian396

iTrader: (3)

I had the 3” catless dp 3” resonator and 3” magnaflows. If I lost anything down low I made up for it on top. G-tech said I ran the same and butt dyno could tell a difference. Personally I thought it was a bit loud in the car. Good god she sounded mean. If you need to convince the wife maybe a K&N, tune, and remove the resonator.

MonteSS8707

iTrader: (4)

I've got 3 inch exhaust and I mighta lost a lil' down low. But, the mid to top end pull way makes up for it. The cars fries the **** outta the tires at anytime or any speed in 1st anyways so the slight low end loss really doesn't bother me. 3 inch isn't too big. Your shoving 2 exhaust manifolds thru a single pipe with a horrible merger. All 3 inch does is take a lil' back pressure away. Not enough to make a major difference.

Nacho SS

iTrader: (4)

I am 3" all the way back....and I dont want more low-end....I'll take more power up top please.

seeyaa

3 inch is a bit over kill for a 300hp 5.3 i have 3 inch on my cammed lQ9.I would love to have all the low end i can get.

neilownz

i need to cam my truck. first i gotta see how much ill end up owing in taxes...

got a headers back off road exhaust coming for now. guess i have the lq4 with dished pistons. ooh well its better for boost!

Corny40

iTrader: (7)

Lew the Magnaflow system is 2.5", not 3".

06MonteSS

interesting.....

when they FIRST came out with it, it was 3".....

so, at least it's not AS bad now... heh...

Corny40

iTrader: (7)

Honestly, I don't think they ever were 3". I say this b/c that was a big part of my decision 2 years ago (~6 months after it came out). Go with the 2.5" Magnaflow or have a custom 3" Flowmaster system fabbed?


Another interesting note, I just checked out the MF site, and for as great as everyone says it is, there are NO customer reviews. Curious.....


I'm sure that will change now.

Nacho SS

iTrader: (4)

When you start modding and find that the car breaks them loose with its snappy low end and then peters out at 5300 RPMs you'll wise you had more topend.

06MonteSS

really??? interesting...

I could'a SWORN that people were saying they were 3" when they got 'em...

oh well, my bad...

carry on...