Loss of hp with exhaust cutouts
#1
Loss of hp with too large of exhaust??
Hey everyone. I have a question with hp loss
I lowered my truck and had to cut out the old tail pipes for clearance. I dont usually drive hard but I noticed it sluggish when I floor it and was wondering if its because it has no tail pipes. the truck is an 05 with the stock 5.3 automatic automatic and has long tube headers full dual 3in with x pipe and 2 magnaflow mufflers and dumps before the axle. I like the way it sounds now but if it helps I would have the muffler shop make new tail pipes. Thats the exhaust it came with when I bought it. I feel like the 3in dual exhaust might be too much for a stock 5.3 especially with no tail pipes
I lowered my truck and had to cut out the old tail pipes for clearance. I dont usually drive hard but I noticed it sluggish when I floor it and was wondering if its because it has no tail pipes. the truck is an 05 with the stock 5.3 automatic automatic and has long tube headers full dual 3in with x pipe and 2 magnaflow mufflers and dumps before the axle. I like the way it sounds now but if it helps I would have the muffler shop make new tail pipes. Thats the exhaust it came with when I bought it. I feel like the 3in dual exhaust might be too much for a stock 5.3 especially with no tail pipes
Last edited by THEPARTSMAN; 12-12-2021 at 08:05 PM.
The following users liked this post:
THEPARTSMAN (12-13-2021)
#3
I doubt you could gain enough "back pressure" by adding a few feet of tail pipe to matter even if that was an issue.
Now if the exhaust is truly to big.... time to throw a cam or supporting mods onto the engine so that it needs that large exhaust
Now if the exhaust is truly to big.... time to throw a cam or supporting mods onto the engine so that it needs that large exhaust
The following 4 users liked this post by silentbravo:
#4
Check for any engine diagnostic codes.
Unlikely but possible it has a knock sensor code or something crazy and it decided to happen at this point. Code like that will pull alot of timing and well, make it sluggish.
Unlikely but possible it has a knock sensor code or something crazy and it decided to happen at this point. Code like that will pull alot of timing and well, make it sluggish.
Trending Topics
#8
#9
100% Redneck
Probably psychological... you're hearing all that extra exhaust noise and your brain thinks "louder = faster" The opposite from hearing a super quiet system where your brain hears an almost silent 5000 RPM and you think the engine is hardly working.
It's sorta like a beginner using a dual action polisher correcting paint. The higher the buffer speed setting, the louder the tool, then the hand speed moving the machine increases automatically. When this happens you are no longer abrading the paint efficiently. Sometimes you have to resist what your brain is actually telling you
Yeah getting tailpipes to fit over the axle and under the bed is a tight fit on dropped trucks. I have the SE true duals and the tails in the kit wouldn't fit. I drove it dumped for a week or so and it was to much for me. Had my muffler guy bend me some tails and added a couple Vibrant resonators before the mufflers... sounds great inside and out.
It's sorta like a beginner using a dual action polisher correcting paint. The higher the buffer speed setting, the louder the tool, then the hand speed moving the machine increases automatically. When this happens you are no longer abrading the paint efficiently. Sometimes you have to resist what your brain is actually telling you
Yeah getting tailpipes to fit over the axle and under the bed is a tight fit on dropped trucks. I have the SE true duals and the tails in the kit wouldn't fit. I drove it dumped for a week or so and it was to much for me. Had my muffler guy bend me some tails and added a couple Vibrant resonators before the mufflers... sounds great inside and out.
#10
Probably psychological... you're hearing all that extra exhaust noise and your brain thinks "louder = faster" The opposite from hearing a super quiet system where your brain hears an almost silent 5000 RPM and you think the engine is hardly working.
It's sorta like a beginner using a dual action polisher correcting paint. The higher the buffer speed setting, the louder the tool, then the hand speed moving the machine increases automatically. When this happens you are no longer abrading the paint efficiently. Sometimes you have to resist what your brain is actually telling you
Yeah getting tailpipes to fit over the axle and under the bed is a tight fit on dropped trucks. I have the SE true duals and the tails in the kit wouldn't fit. I drove it dumped for a week or so and it was to much for me. Had my muffler guy bend me some tails and added a couple Vibrant resonators before the mufflers... sounds great inside and out.
It's sorta like a beginner using a dual action polisher correcting paint. The higher the buffer speed setting, the louder the tool, then the hand speed moving the machine increases automatically. When this happens you are no longer abrading the paint efficiently. Sometimes you have to resist what your brain is actually telling you
Yeah getting tailpipes to fit over the axle and under the bed is a tight fit on dropped trucks. I have the SE true duals and the tails in the kit wouldn't fit. I drove it dumped for a week or so and it was to much for me. Had my muffler guy bend me some tails and added a couple Vibrant resonators before the mufflers... sounds great inside and out.