Is Open Exhaust Bad For The Engine?
- Thread starter topless98gt
- Start date
40th GT
New Member
Nope. I don't like the exhaust tone at all when a car has no mufflers.Kilgore Trout said:Am I the only one that is thinking that having no catback at all is pretty damn cheesy?
you dont need backpressure... backpressure just happens to be a byproduct of creating exhaust gas veolicty... its always a trade off... you can tune the pipe size/length for high rpm and it will be shorter and fatter or you can tune it for low rpm which will be longer and skinnier... when you unbolted your catback all you did was freeup your exhaust... and relieve backpressure and loose low rpm gas speed which is a great thing for highrpm but you suffer in the low end because the exhaust isnt helping to scavenge at such low rpm...
in short your fine it will just sound like ass...
in short your fine it will just sound like ass...
stangGT97
New Member
jasonh_86 said:I know!..
But the VT Stage 2's are going back in... getting it done by a reputable shop, the one that tuned the car. They're going to install and degree them and everything.. I hope to get 300rwhp
Going under the knife on December 18th.. so u guys can expect to see results by the 20th
woop woop! Nice dude, hopefully by then I'll have sold my Mustang
Selling it?!... How dare you!!!! 
shallowreef
New Member
If you guys go to youtube and look up "SLP mustang", you will see my Red mustang on a few of the clips look for stuff posted by "Shallowreef".
I run Full SLP on my car and its great to me. I also have a catted x and LM2. Check it out and let me know what you guys think. I would post it for you but work blocks youtube.
I run Full SLP on my car and its great to me. I also have a catted x and LM2. Check it out and let me know what you guys think. I would post it for you but work blocks youtube.
jstreet0204
Active Member
speedfreak98r said:Except for your ears
True. It will most likely throw off your fuel trims if the o2's are close to the collector, but they will correct themselves when you put the mid pipe back on.
Duke309
Member
Open headers was ungodly loud in my garage, sounded decent, wouldnt want to drive around like that at all though.
How do magnapacks sound with an o/r x?
How about the LM2s?
How do magnapacks sound with an o/r x?
How about the LM2s?
shallowreef
New Member
Not sure about the 'packs. We will find out by Friday, hopefully. My 'packs should be coming today. WOOT WOOT!Duke309 said:
Found this video on YouTube:
http://www.youtube.com/watch?v=vrUt1h17gEs
Check it out!! Sounds mother-ef'n bad-ace.
http://www.youtube.com/watch?v=vrUt1h17gEs
Check it out!! Sounds mother-ef'n bad-ace.
RandyStinchcomb
New Member
should not be a problem, but....my dad who is "old school" make a good point about running open exhaust, esp in the winter where it gets cold. once you shut the car off, cold air is drawn up thru the headers and if cold enought and the exhaust valve is hot enought, it could cause a valve or valves to warp. I've never seen this happen and again this old school thinking but it is something to think about
RandyStinchcomb said:should not be a problem, but....my dad who is "old school" make a good point about running open exhaust, esp in the winter where it gets cold. once you shut the car off, cold air is drawn up thru the headers and if cold enought and the exhaust valve is hot enought, it could cause a valve or valves to warp. I've never seen this happen and again this old school thinking but it is something to think about
if you dont think they will warp go out and pull the headers off and run open head.... tach 5k a few tiems then turn it off.... make sure you have a camera ready for the next time you start because its going to make some cool noises...
Warrior 102
New Member
scupking
Active Member
Mine didn't come today. I guess he did say the "middle" of next week, which would be anywhere from Wed to Sat...I really hope they come soonscupking said:
I can't wait!We need to compare the sounds since I have O/R X w/ NPI, and you have Catted H w/ PI...they will sound a LOT different!
scupking
Active Member
topless98gt said:Mine didn't come today. I guess he did say the "middle" of next week, which would be anywhere from Wed to Sat...I really hope they come soon
We need to compare the sounds since I have O/R X w/ NPI, and you have Catted H w/ PI...they will sound a LOT different!
Yes they will. There is anohter guy that is getting the packs and he has a prochamber. All three of us will have a different sound.
AmBo
Active Member
scupking
Active Member
Just got home from work and had 2 packages sitting on the front steps. I called Midas and I told them I would come in after work tomorrow. They sounded excited about installing them.
