unbolt exhaust questions

[MrGan78]

Hey Guys
I got a GTS 6spd and I don't have the money to get an exhaust so I've heard unbolting the exhaust will give u very loud sound..I wanna give it a try.. Does unbolting means take out the whole exhaust ?? Then my whole tip is all gone ? or It's just take something apart at the middle rather than the tip ? How much they normally charge to do this kind of labor ..?

[XskoopX]

To tell ya the truth, theres a lot threads on unbolting the exhaust and theres even an install guide how to do it. Just get a ratchet, 12MM socket, maybe some lube. Theres 2 screws are the flanges, unbolt it and let it hang. Boom Bam, your ready for battle! http://www.newcelica.org/ubb/wink.gif

[WHITECELICAGTS]

Dude dont so it. I had an incident that almost caused my car to blow up from doing that. I unbolted my exhaust, and the heat comes out of the ehaust and caused my gas to boil. I left the car sit in the driveway for 2 hours until it stopped boiling. This can be a serious disaster if you have this problem to long, it may cause engine damage.Trust me dont do it man, a bit of wise of advise from someone that has been through this.<IMG SRC="http://www.newcelica.org/ubb/smilies/cwm24.gif" border=0> <IMG SRC="http://www.newcelica.org/ubb/smilies/cwm24.gif" border=0>

[R K e 1 C A]

What was the weather when you did this? I agree, even though the sound is loud its really not worth it.

[MrGan78]

hmmmm......I want some SOUND tho ..... NO $$$ left for celica.... aaaarrrrr<IMG SRC="http://www.newcelica.org/ubb/smilies/cwm22.gif" border=0>

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01 GT-S
WW kit
Progress
HID alike all around
Pansonic deck
JL 10 w/ custom box

[MrGan78]

I just came back from muffler shop and the guy took the exhaust off and custom made a pipe that go through the rear valence.. damn it's LOUD !!! but it doesn't got the baass tone that i want.. ..I'll go look for a nice tip later on..
I currently have a tip the same size as the GTS.. Hmmm.... By the way...do I loose performance this way or gain performance ? the guy at the shop told me I loose performance..oh well....I heard taking it off gives u a big more hp....

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01 GT-S
WW kit
Progress
HID alike all around
Pansonic deck
JL 10 w/ custom box

[sittinSidewayz]

Dude dont so it. I had an incident that almost caused my car to blow up from doing that. I unbolted my exhaust, and the heat comes out of the ehaust and caused my gas to boil. I left the car sit in the driveway for 2 hours until it stopped boiling. This can be a serious disaster if you have this problem to long, it may cause engine damage.Trust me dont do it man, a bit of wise of advise from someone that has been through this.<IMG SRC="http://www.newcelica.org/ubb/smilies/cwm24.gif" border=0> <IMG SRC="http://www.newcelica.org/ubb/smilies/cwm24.gif" border=0>

oh ****

[silentchaos]

^you brought back a SEVEN year old thread to say one word and some Astrix's?

:wtf: some people...

[EMSRacerCeli03]

think he is saying that about the exploding gas from the exhaust.

[dead_star04]

hmm, thats weird. iv run my obx exhaust unbolted for a few months now, and before that i had my stock exhaust unbolted for a year. never had any problems, maybe cuz i had the heat shields still? more to the point, theres a super cheap exhaust on ebay called hitori tenrai. its like 140 shipped, and sounds great for the price. had mine for two years. i ended up giving it to a guy from cali, but thats a different story

[silentchaos]

wow, really? i never really new the concept behind quotes. :rolleyes:

the point #1 is that the guy who posted that hasnt been on nc.org in 4 years and we will never get anymore info about his claim. point #2 is that there are people that have ran with an unbolted exhaust for months and never had a problem except decreased mpg.

so once you access the situation, an "oh ****" really is a waste of time and bandwidth.

now that i have taken so much time explaining this to you noobs i suggest we all let this thread sink down to the bottom of the pile

[yakboyslim]

i suggest we all let this thread sink down to the bottom of the pile

BUMP!!







Sorry, I had to. Now it may die.

[EMSRacerCeli03]

bump again, why do you say worst mpg should be more since the flow has increased.

[yakboyslim]

That's probably all speculation on peoples parts who aren't thinking.

After the collector, back pressure is an enemy and flow is all you need. The reason you can't go to a 4in exhaust on a stock Celica is flow velocity. People take the truth about velocity, and the myth of back pressure, and just apply them to anything that sounds like an exhaust upgrade and say that you will "lose torque" or "hurt gas mileage".

By shortening an exhaust you can't hurt anything. Exhaust, not headers. Header length matters. But it's bogus, how is removing something after the cat (the source of the backpressure your car may need) and simply ending the exhaust sooner going to hurt anything? I challenge people who say things like that to prove what they are saying without the catch phrases "flow" or "too big for that engine" or "backpressure". Sorry if I sound like I'm calling people out on teh internet but I really would like to hear someone prove a loss in MPG with an argument and not word vomit.

I used to track mileage with my Tercel and I saw an MPG increase after getting a high flowing exhaust. Which is not speculation. Everything else is informed and thoroughly thought out speculation on my part (I never said I wasn't speculating)

I doubt there is anything about the Celica that would make it lose MPG due to an improvement in flow with out a decrease in velocity.

[yakboyslim]

Wow, I wrote that in like 3 separate parts and it shows, looks like my idiot step brother wrote it. I think the point still comes across.

[EMSRacerCeli03]

yeah bro thats what i was thinking, why would it make it worst, thought bc ppl are panicing about the heating of the fuel tank. Since warmer fuel is less effiecent than cooler fuel. Hence why i though he ment it would decrease mileage. But with such an increase in flow, expecially on stock sytems, would be a big increase. and the increase in heat of the fuel would be negligable since gas is already pretty hot when it gets into the combustion chamber. But like i said and yakboyslim an increase in flow, such as unbolting, will increase mpg and not decrease it. And also power increases :)

[silentchaos]

well i have proof, not documented but i regularly track my mileage. I get anywhere from 29-31 mpg of mixed driving and if im careful about it i can get 34 out of it. i unbolted my exhaust at 3/4 of a tank and drove until i was at about a little under a 1/4 left. When i bolted it back up and gassed up it came out to only 24.5 mpg.

[EMSRacerCeli03]

^^^you reset your ecu?

[silentchaos]

hmm, no i didnt. would that fix my millage issue? i suppose the ecu could relearn the new setup

[EMSRacerCeli03]

yeah it would help, especially if you were running a stock system, it probably could learn to flow alot better. Stock system causes alot of back pressure the ecu had to account for.

[yakboyslim]

Plus if you are unbolted, I bet you are "enjoying" the car a little more. I have no proof with the Celica because once I got my new exhaust I haven't been able to keep my foot out of it for an entire tank. If you change how you drive or your route, or weather, your mpg will vary and you can't use it as a judge.

You either need perfectly identical conditions, or many tanks averaged. One tank will not really tell you much. As for resetting the ecu, I don't know if that is THAT big a deal here, if you were driving carefully for MPG the car would be in closed loop almost all the time, and thus would be running 14.7 all the time (theoretically).

I gained about 3 mpg from my exhaust on my tercel. I don't have great data on that because soon after I got the exhaust I blew a headgasket and then started with all the hypermiling stuff. (I got 56 mpg out of one tank!)

[sittinSidewayz]

oh **** this thread was created in '01

[celicagts17891]

unbolt it. its loud and fun to scare people too.