Tyler Z28

iTrader: (1)

Its a bolt on LS1 made 340HP at the wheels,it has Headers,ORY,flowmaster catback and im looking for some more power out of it along with some better sound as well, im stuck on my decision. Either just swap the flowmaster muffler out for a Magnaflow (pn. 12265) about $100 bucks plus install....or go with a QTP 3" electric cutout right after the merge of the Y Pipe and then run to the flowmaster(or Magnaflow). just looking for a little input guys thanks.

JRENIGAR

iTrader: (37)

By better sound, Im assuming you mean a little less noise or rasp? If so then a magnaflow or hooker aerochamber would sound better. A cutout would probably be more raspy and louder than the muffler you already have.

Tyler Z28

iTrader: (1)

just wanting something different honestly, something that flows better and sounds different but after reading the proclaimed 10-20RWHP gains after doing cut outs thats really what i would like.

JRENIGAR

iTrader: (37)

Get the cutout then, it flows better than any over the axle catback.

Tyler Z28

iTrader: (1)

will cut out's being opened only benefit for peak numbers or will it help the power curve throughout?

LS1WS6dreamer

iTrader: (1)

It may be all in my mind, but I swear with my cutout open my car feels a little boggier down low than with it closed. Nowadays, I rarely ever use the cutout because I don't feel like getting under the car and screwing with it. Now if it was electric it would be cool.
Since you want something different and the FLowmaster IS NOT the "Flowmaster" I would just replace the muffler with something that you like, go to youtube and listen to peoples cars and see what sounds good to you. A cutout gets pretty old on a 45min trip, **** vibrating everywhere inside the car. Gets peoples attention though. Fun in town, but not on long hwy/interstate trips.

JRENIGAR

iTrader: (37)

This is true. No backpressure often leads to loss of torque down low.

Tyler Z28

iTrader: (1)

thats that i have read is the low end isnt as good with a cut out, i think i may just do a muffler or continue saving and get some odds and ends i need for the car this second like brakes and center caps and chrome lugs for my c6 z06's. thanks for the help guys.

theskitztikwon

iTrader: (18)

flowmaster merge (2)3" in 4" out then a cut out then a small muffler then step it back down before the axle= more power less rasp, then save up more $ and go all the way with the 4" and get a magnaflow or something

LS1WS6dreamer

iTrader: (1)

Put my car on a dyno yesterday and ran with cutout open and closed. The higher run is with it open and the other(lower) run is running through a Borla adjustable catback. Car has 160,000 miles on it so I was just wondering what it would make. Also remembered this post so I figured I would unbolt the cutout and see the difference.

Tyler Z28

iTrader: (1)

nice solid increase, thats really exactly what i was looking for just a bolt on car with a cut out before and after. It didn't loose any power throughout the curve and even at 2000 rpm there was still a gain and you have a good flowing cat back also my "Slowmaster" should show the same if not better gains. Thanks for the Dyno Sheet and the post you helped make my decision there.

JRENIGAR

iTrader: (37)

Would have been exactly what I wanted to see if you only had Lt's and TSP oryp on it.

Tyler Z28

iTrader: (1)

ture, but do u think my free'er flowing exhaust(already having LT's and ORY along with other performance parts) will i gain more or less HP to the Wheels than his car did?

LS1WS6dreamer

iTrader: (1)

I don't really know, if I had to guess I would say prolly around the same. By September I will let you know. I will be getting LT's and do the same test with cutout open and closed. Hopefully, you will know before me.

JRENIGAR

iTrader: (37)

Thats the $1,000,000 Question... Wish I knew...

Tyler Z28

iTrader: (1)

im going to get the cutout probably next week(thinking QTP 3" electric) but i dont plan on having it dyno'd most likely until i do Heads and Cam, but i would love to see your results after a few bolt on's.

Steve Gunn

What's cool about an e-cutout is you can crack it open just a little if you want. Sure, it all fun scaring old ladies and making babies cry, but most of the time I just crack it a little. The only time mine is wide open is when I'm making a pass. The only time it's closed all the way is when I have a cop behind me. Keep what you got and add the cutout.

Evil Eric

iTrader: (3)

On my firebird i lost a flowmaster and got a hooker setup, was impressed. on the silverado i lost a flowmaster and gained a 3" sweet thunder. i am amazed.

LS1WS6dreamer

iTrader: (1)

Yeah I am really considering doing an electric cutout. The manual just sucks *** unless you just wanna use it at the track. Then you still gotta roll around on the ground and its just a pia. I would like to have the option of using it anywhere I want.
This guy gained less than I did
https://ls1tech.com/forums/dynamomet...o-results.html

Irish350

iTrader: (14)

do both, i did