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Thread: more power from exausht?

  1. #1
    Join Date
    Jan 2010
    Location
    ohio
    Posts
    63

    Default more power from exausht?

    so if 4" you gain horse if you cut off everything but your down pipe im i losing power cuz thats wat i did and its sounds good but pulls huls funny or it was just the fact that i couldn't hear it shift before ha
    94 k1500 cheyenne 4x4 14 bolt rear 3" suspension lift 33 12.50 wild country rvt mud tires relocated PMD, cold air intake,#9 resistor and,injection pump and open 3" down pipe and soon to come this spring 3" body and 35's

  2. #2
    Join Date
    Mar 2007
    Location
    NW Kansas
    Posts
    117

    Default

    quit drunk posting, or insulting your english teacher! j/k IDK why you arent making power, as turbo diesels dont need the scavengeing effect of an exhaust. maybe there is another issue at hand.
    99 Chev C3500 6.5L NV4500 14 bolt 2wd 4.10 130K
    96 GMC C2500HD 6.5L NV4500 14 bolt 2wd 3.73 240K
    95 GMC C2500HD 6.5L NV4500 14 bolt 2wd 4.10 135K
    95 Chev C3500HD 6.5L NV4500 D80 2wd 5.13 132K
    94 GMC C2500HD Burb 6.5L 4L80E 14 bolt 2wd 3.73 300K
    91 GMC C1500, 6.2L SM465 10 bolt 2wd 3.42 59K
    91 Chev C1500 4.3L 5LM60 10 bolt 2wd 3.42 ??K

    See other forum for complete signature

  3. #3
    Join Date
    Jun 2008
    Location
    Burnet durnet Tx
    Posts
    911

    Default ...you...

    ...don't GAIN horsepower....a "free flowing" intake and a less restrictive exhaust system allow turbo to "spool" or reach "boost" making rpm's faster...so that the power band starts at a slightly lower engine rpm than factory stock,thus making your truk a little faster off the line when breaking out of rolling resistance with that insanely overloaded trailer that ya'll always seem to want to pull with your 1/2ton pick-ups...jd
    ..93 3500HD 200h 4L80E 4.88..11150lbs allatime..88 c.c. dually..6.2..auto w/doug nash 2-sp..camo paint...58 A120 4by IH{old vfd brush trk} 71ford p/u 79 shovel {{{ hooorraaayyy the bus is gone}}} 93 2500 parts truk {gone to that great chrusher in the sky 01 burban{wifes'.."no you can't use mine"}

  4. #4
    Join Date
    Jul 2007
    Location
    Attica, OH
    Posts
    1,061

    Default

    Easy on the half tons now, The 6.5 don't know its in a 1/2 ton. It just wants to go go go...
    93 chevy K2500 6.5TD 4x4 4l80e auto
    Custom flatbed with foldaway gooseneck ball
    SSDiesel DB2 injector pump marine injectors
    Upgraded turbo ( no id tag but lots of boost)
    SSDiesel 4" exhaust, no muffler, SS crossover
    Rebuilt 4l80e tranny Transgo stage 2 shift kit
    rebuilt HD torque converter
    4x4 Posi Lock
    Opened up air box, stock filter
    Boost, Pyro, Tranny gauges in A-pillar
    Cowl hood, all new paint.
    SS Diesel Cooling upgrade, single tstat Dmax fan,
    '98 HO waterpump.

  5. #5
    Join Date
    Jan 2010
    Location
    ohio
    Posts
    63

    Default

    yea well i dont really hall nothing but my four wheelers and fire wood sometimes but i just want more power and speed nothin rediculouse just fun i mean this is a play truck im still in high school its fun to show off a little bit and that would probly explan the bad spelling my bad oh and why do all the flowmaster or bullydog exaughts systems say 15 more hp or 20hp
    94 k1500 cheyenne 4x4 14 bolt rear 3" suspension lift 33 12.50 wild country rvt mud tires relocated PMD, cold air intake,#9 resistor and,injection pump and open 3" down pipe and soon to come this spring 3" body and 35's

  6. #6
    Join Date
    Jul 2008
    Location
    S. Ohio
    Posts
    566

    Default

    they refer to the tq/ hp gains after removing factory exhausts that were required to meet emissions standards.In the US,emissions are air and noise..thats why you end up with street tires on HD trucks from the factory....soot collectors and DPF's..all which are somewhat restrictive...I dont trust their "gains" so to speak..as Trucdoc said,it actually just causes hp/tq to move down a few hundred rpms(come in earlier) because of better breathing.Although you are right on the no exhaust messing up your powerband..I just took mine off the Dodge(5.9 cummins) to take it to the exhaust shop to get rid of the soot collector..it ran terrible without it...I spend a few bucks/yr on Diesel World and Diesel power magazines..all they seem to write about is how to change your exhaust..at least 1 or 2 writeups/month each...this month was a Caddy with a p pump..big whoop..I wouldnt even ride to town in something that looks like that..they have been raving about that car..looks like a crackhead mobile to me
    Last edited by Stumped; 02-05-2010 at 08:33 AM.
    still driving stuff with an 8 track,not switching to those newfangled cassettes thingys...... I cant find anything since I moved all my junk

  7. #7
    Join Date
    Jun 2008
    Location
    Burnet durnet Tx
    Posts
    911

    Default ...as opposed...

    ...to a chevy crewcab dually with a cummins in IT...jd
    ..93 3500HD 200h 4L80E 4.88..11150lbs allatime..88 c.c. dually..6.2..auto w/doug nash 2-sp..camo paint...58 A120 4by IH{old vfd brush trk} 71ford p/u 79 shovel {{{ hooorraaayyy the bus is gone}}} 93 2500 parts truk {gone to that great chrusher in the sky 01 burban{wifes'.."no you can't use mine"}

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