I changed my exhaust today, and now i feel my truck faster top end, but slower on the bottom end. I have a borla muffler, with the tips coming out before the rear tire. Now i put a 3" pipe all the way back dumped after the axle. Do you think i lost power? Maybe it is just me. Anyone had an experience like this??
03' Silverado RCSB H/C 5.3, 4L80,76mm KBracing Kit
13' Sierra Denali 2500HD CCSB 4x4
i did the exact opposite about 20 minutes ago... i had 3 inch pipe put into a 5inch exhaust tip about 2 foot in front of the rear tire... had bad bottom end but good top end... now i have 3 inch ran and dumped right in front of teh axle... i can feel more bottom end, but havent gotten a chance to check the top end yet....
basically i know someone else can explain it better and i know it has been done b4, but the more open it is the better exhaust flows...so hence more flow more top end power... the more restricted teh more torque, so hence more low end power less top end.... basically how i think of it
sprayedenali: i like catching, but not fishingOriginally Posted by DamnYankee
lol...I wish you would never paint your truck...I bet it bugs them that much more that a primered up truck just soggied his Wheaties. good job buddy
DBTBSS: bring Tyler... we need someone to make fun of
MidnightRider: your right im gay
DamnYankee: my nana failed
DamnYankee: confused...if it can't keep up to begin with, how can it keep up
mitch cobb racing: ya, allen played with it for a while, HUGE difference
Yeah thats what i was thinking. Since there's like curves on the side exhaust there's more back pressure, and now that the pipe is all the way back there isn't as much back pressure thus more top end
03' Silverado RCSB H/C 5.3, 4L80,76mm KBracing Kit
13' Sierra Denali 2500HD CCSB 4x4
i put a lil more striction by adding about 3ft of 2.5 inch pipe.... now its too damn quiet... im just gonna open it back up i dont need all that low end anyways i do most of my races from a roll anyways
sprayedenali: i like catching, but not fishinglol...I wish you would never paint your truck...I bet it bugs them that much more that a primered up truck just soggied his Wheaties. good job buddy
DBTBSS: bring Tyler... we need someone to make fun of
MidnightRider: your right im gay
DamnYankee: my nana failed
DamnYankee: confused...if it can't keep up to begin with, how can it keep up
mitch cobb racing: ya, allen played with it for a while, HUGE difference
<div class='quotetop'>QUOTE(TxStVanWilder @ Oct 17 2006, 05:22 PM) [snapback]69926[/snapback]</div>jaja, i put a 3" from the muffler back dumper right after the axle. I also do the races from a roll. I prefer to have the more power top end. I didn't lose as much power down low as i thought but i still did. Looks like a good trade off for the power on top.i put a lil more striction by adding about 3ft of 2.5 inch pipe.... now its too damn quiet... im just gonna open it back up i dont need all that low end anyways i do most of my races from a roll anyways
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03' Silverado RCSB H/C 5.3, 4L80,76mm KBracing Kit
13' Sierra Denali 2500HD CCSB 4x4
yeah top end and sound make up for my low end loss lol.... i can hear myself think and i dont like it at all.... i dont know about you but i could feel the gain from the longer pipe.... but i would rather have my more open feel and sound
sprayedenali: i like catching, but not fishinglol...I wish you would never paint your truck...I bet it bugs them that much more that a primered up truck just soggied his Wheaties. good job buddy
DBTBSS: bring Tyler... we need someone to make fun of
MidnightRider: your right im gay
DamnYankee: my nana failed
DamnYankee: confused...if it can't keep up to begin with, how can it keep up
mitch cobb racing: ya, allen played with it for a while, HUGE difference
back pressure is the key on this. the more back pressure the better ur low end, and vice versa. i could tell on my 4.3 wheni took my cats out that my top end was outrageously different, but the low end seemed weaker.
So i guess what would solve all of our problems would be to have an electronic cutout so we can have it closed at low rpm's and then have it open up for the top end. What do you yall think about this assesment?
2004 EXC Silverado 6.2L
Mods:
6.2L L92, Ported and Polished stage 3 heads, 95mm Throttle Body, 100mm MAF, NA, Pacesetter LT Headers, Magnaflow X-Pipe Muffler, Electric Fans, 160* thermostat, 2" Drop Shackles, Hellwig Sway Bars Front and Rear, Monroe Reflex Shocks, NGK Spark Plugs, AMW Oil Catch Can, 17"x10" wheels on Kuhmo Tires.
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