Will A glass pack muffler reduce my horsepower?
I have a 2000 ford f150 v8 triton and I pull a 29 foot travel trailer that weighs about 6500 lbs. I was thinking about putting on a glass pack but I’m afraid that the lose of back pressure might cause me problems when hauling a huge trailer up a mountain side. I also want to be able to remove the glass pack and put my stock exhause just in case I want to sell the truck. I live in Pennsylvania and the have auto inspections here yearly and some counties near me require a emissions test. My county doesn’t have it but the person I might sell it to might live in one of those counties.
Please comment only if you own or know someone who has a truck with glass packs that uses it regularly for towing stuff. I just don’t want any advise from some kid with a 2500 dollar fart muffler car that lives with his parents.
Why you want a glasspack ? They won’t hurt performance, but they sound like crap.
Glass-packs won’t be any worse than a stock muffler. The old saying that an engine needs back-pressure is wrong anyway. The fact is that an engine is an air pump, so the faster air can move through the system the more power you will have. The funny thing about that is, when too large an exhaust is used, it can actually cause more back-pressure than slightly too small of an exhaust. This is due to the fact that exhaust needs to maintain velocity in order to flow all the way out of the pipe. If the exhaust is too big the gases get lazy and will actually create a sort of traffic jam in the pipe.
Anyway the short answer is that a glass-pack is not a real performance muffler anyway, as they are deceptive in their design, they are actually more restrictive due to turbulence than tuned, chambered mufflers like a flow-master. As far as sound goes you really have to be the judge there, i think a good set of glass-packs sound awesome, but given the desire for extra performance, i would have to go for a better choice.
A glasspack is about the same as putting a straight pipe under it. It will not decrease your power but will be loud expecially under a towed load. You will get abt the same performace and better sound with a good high flow muffler like a Flowmaster or Dynomax. Also with the glaspack the backflow from the exhaust could cause backfiring when you are slowing or go into a lower gear under load. if you get a cat back system you will only have to replace from the Converter back and will save you some if you sell your truck
a glasspack?, thats a fart muffler!, put a flowmaster muffler on it and it will sound good plus pass inspection.