GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 3 of 3
  1. #1

    Default Exhaust, duals question.

    I just got a 40 series Flowmaster put in and im really happy with it. I got it for a pretty good deal, $150 at this local shop, and its stamped.

    Before i went there i went to my 4 wheel parts salesman to get some prices for magnaflows, he told me that duals (single in dual out) mufflers are louder than singles but they rob horse power. I trust him (he saved me like 2k on my lift) but im not sure if this is true or not. Has any one else heard this, or does anyone know if its true or not. The reason i ask is because im planning on switching out to a single in dual out when i ge tthe $$, i like the classic look of two stainless steel tips coming out the the back.
    1992 Suburban 4X4
    Custom Tough Country front bumper
    Mile Marker winch
    N-FAB steps
    6 inch Pro Comp lift
    17 inch Pro Comp wheels
    35 inch BFG A/T
    Hypnotic speakers
    Diamond Subs
    Pionner Head
    Optima yellow top

    2009 Silverado 2500 HD
    LTZ
    Z71 (not 4x4) :mad:
    N-FAB side steps
    Rhino Liner
    UWS Black Series tool box

  2. #2

    Default

    Quote Originally Posted by RussellFidel View Post
    I just got a 40 series Flowmaster put in and im really happy with it. I got it for a pretty good deal, $150 at this local shop, and its stamped.

    Before i went there i went to my 4 wheel parts salesman to get some prices for magnaflows, he told me that duals (single in dual out) mufflers are louder than singles but they rob horse power. I trust him (he saved me like 2k on my lift) but im not sure if this is true or not. Has any one else heard this, or does anyone know if its true or not. The reason i ask is because im planning on switching out to a single in dual out when i ge tthe $$, i like the classic look of two stainless steel tips coming out the the back.
    only difference is prolly +/- 2hp or so. the dual out would just move that variable in the higher rpm range. losing it on the bottom end.
    02 Chevy HD 6.0Liter w/ Allison Trans, 6in Fabtech lift, 16in Eagle Alloy Rims on 35" Mud Brutes, Debadged, 6k HIDs, Smoked Tails, Summit Glasspack Custom catback exhaust
    00 GMC Sierra, LQ9 6.0 Swap H/C/I, TCI built trans,ZEX 100hp NOS,dynomax race bullets 445Rwhp
    05 GTO PBM, M6, H/C/I 463rwhp/SCT tuned. R.I.P

  3. #3
    Sr. Mechanic SmokeU's Avatar
    Join Date
    Aug 2009
    Location
    Fitchburg, WI
    Posts
    150

    Default

    if it is the case that installing a muffler like that will rob horsepower, then you should be able to gain your HP right back with a new drop in K&N air filter or go all the way and get a cold air intake as well as some new headers
    2004 Chevy Silverado w/ 5.3L V8 / Z71 / Shorty

    Would rather be going too fast then too slow:out:

Similar Threads

  1. exhaust question
    By ERSIERRA06 in forum General Chevy & GM Tech Questions
    Replies: 3
    Last: 04-29-2010, 10:40 PM
  2. Bolt on exhaust or welded true duals?
    By DARiggs in forum Performance & Fuel
    Replies: 0
    Last: 11-28-2009, 09:43 AM
  3. ANOTHER exhaust question
    By Silver08JT in forum Chevy Truck Accessories
    Replies: 5
    Last: 02-08-2009, 01:57 PM
  4. New exhaust question
    By Nasty1 in forum Performance & Fuel
    Replies: 4
    Last: 01-13-2009, 07:24 PM
  5. exhaust question!!!?!?!?
    By myredneckchevy in forum Chevy Truck Accessories
    Replies: 9
    Last: 12-15-2008, 01:05 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •