straight pipe

[san jose_coupe_408]

I was thinking about goin straight pipe for my car. Iwas just wonderin what effects would it have on my car

[Jose3.5]

I don't think it's going to sound good on your 2.5

[doi]

hey whats up man i did the straight pipe on my 3.5 it sounds good. where u thinking about doing it?

[san jose_coupe_408]

hey whats up man i did the straight pipe on my 3.5 it sounds good. where u thinking about doing it?

yah i was thinking bout it but i dont know how itll it sound. do you notice any thing different since you went with straight pipe because ppl say it isnt that good to go with it

[doi]

nothing different at all just louder it will make people notice your car a lot more whether you like that or not. most of the time people like it sometimes they don't. also not everywhere will do it for you.

[Hussain]

you guys do know you can go straight piped for free right? about a year ago i talked about it and no one paint attention but now mehdi just posted a thread about it the other day in the coupe specific section.... go look at your exhaust pipe and you will see a flange with 2 bolts. take off those bolts and stick a flat head screw driver in there and open it up.... its straight piped and you can just bolt it back up when ever you want..... i have a 3.5se and it is HELLA LOUD and if i have my windows UP, it rattles the s*** out of everything in the car.... has a nice sound though. i never looked under a 2.5s but i'd assume it has the same thing....

you guys should come out to a car meet in Sacramento sunday if you can lol i found out about it in the California section of the NICO forums.

[doi]

i saw that thread where you did that but i just straight piped mine all the way out to a single exit. haha i would but sac is way too far.

[Hussain]

i'm not going to lie, i'm just going to the meet cuz its a few miles away from my house lol

[dldjros69]

you guys do know you can go straight piped for free right? about a year ago i talked about it and no one paint attention but now mehdi just posted a thread about it the other day in the coupe specific section.... go look at your exhaust pipe and you will see a flange with 2 bolts. take off those bolts and stick a flat head screw driver in there and open it up.... its straight piped and you can just bolt it back up when ever you want..... i have a 3.5se and it is HELLA LOUD and if i have my windows UP, it rattles the s*** out of everything in the car.... has a nice sound though. i never looked under a 2.5s but i'd assume it has the same thing....

didnt mehdi say that it wasnt any good and he fixed it shortly after.

[san jose_coupe_408]

go look at your exhaust pipe and you will see a flange with 2 bolts. take off those bolts and stick a flat head screw driver in there and open it up....

where exactly is the flange with the 2 bolts?

[Hussain]

not to dis mehdi or anything but he didnt know what he was talking about... ive track tested my car and have numbers to show that it is actually faster... i ran a 14.4 stock, 14.2 with exhaust, and a 13.9 with no muffler and all were at the same track with similar weather conditions. mehdi did say its not the best thing for daily driving and i agree with that because you'll have no back pressure and you'll lose a lot of low end power but up high it will pull much harder and scream like crazy..... thats why i got a electronic exhaust cut-out. so i can chill and drive normal and then hit the switch and have my car like its straight piped.

thing is, both 2.5s and 3.5se have MORE then enough power for daily driving if its stock or straight piped. only difference is that straight piped is faster for racing.

[XXplosive990]

haha also be careful if your gonna losen the bolts cuz you might lose one of them, as i found out the hard way >:[

[mcheddadi]

not to dis mehdi or anything but he didnt know what he was talking about...

LOL, mutiny! my butt dyno never lies!

[marvin5087]

ive herd it on a few 4cylinder cars and they are loud..unbearable from my opinion but perf. wise its worth the money ..i felt the difference when i did mine and its not much to do($$)..i have the 3.5 btw and love the fact that i straight piped the car ..do you plan on keeping your car for long?

[Ricko]

My friend did it to his Mazda 6. Very nice low grunt that is not annoying at all. Made his 4cyl sound like my v8 truck when i had it.

[san jose_coupe_408]

i cant seem to take off the bolts theyre stuck on there pretty tight. anybody who has taken them off what did you use to take it off?

[Ricko]

Should be able to use some type of rust remover right?

[theoctopussi]

i'm straight piped, sounds wonderful, and feels good... i think its still on youtube check it out

[Oilsink]

yea its a pain in the a** to unbolt the exhaust.. ive tried and one of my bolts are like 1/2 stripped.... anyone have any trouble unbolting it besides me??

[Loop]

yea its a pain in the a** to unbolt the exhaust.. ive tried and one of my bolts are like 1/2 stripped.... anyone have any trouble unbolting it besides me??

Get yourself some PB Blaster. It never fails me.

[ESP]

Get yourself some PB Blaster. It never fails me.

PB Blaster FTMFW!!!I just sprayed a little on there, waited for about five minutes, then took the socket wrench to it...came off like a breeze! I was surprised with how good it sounded. Really deep and somewhat burbly...not ricey by any stretch of the imagination. The only problem is that it's LOUD!!! Either way, I'm getting a local shop to fab up a y-pipe right after the flange and put in a pair of straight pipes on Monday...

[lilojoj]

what do you guys mean by straight piped? do you guys just have no mufflers?

[ESP]

what do you guys mean by straight piped? do you guys just have no mufflers?

Yup. Straight pipe = no muffler...

[san jose_coupe_408]

so i used pb blaster for the bolts but didnt have enough luck with one of them and i got frustrated and started cutting away. now its more than halflway done but if i keep cutting i there would be no way of taking it off. any suggestions on what i should do now?

[ESP]

Cutting?!?!?! Dude, what are you cutting? The bolts? It shouldn't be that difficult to get the nuts off. Try using a breaker bar with your wrench...

[mcheddadi]

so i used pb blaster for the bolts but didnt have enough luck with one of them and i got frustrated and started cutting away. now its more than halflway done but if i keep cutting i there would be no way of taking it off. any suggestions on what i should do now?

IMPACT WRENCH

[6SpdAltima_Coupe]

BUMP..

so we know straight pipe exhausts may result in loss of some power because theres no back pressure..but is there any risk for problems in the future? i got my straight pipes done yesterday but im afraid i might have problems in the future maybe? i dont know..i just wana have this car for a while and im trying to make sure now if its gona be safe..

[CoupeVQ35CVT]

OK everyone keeps saying less back pressure causes loss of low end torque.

Please understand it's NOT back pressure, it is the loss of the exhaust's escape velocity which at low revs affects the torque, and that will usually have more to do with the diameter of the piping and length of the certain exhaust parts combined. Removing the muffler just means you will be reducing back pressure which shouldn't not really mess with the low end, and at higher revs will only help top end, of course.

Having back pressure to create or help with low end torque does not logically make sense. Think about it. There are several websites which will educate you on this very fact. Here's a link that explains it well: http://www.j-body.org/faq//142/

Back on topic, I think a member here has the Artisan or straight pipe on their 2.5 and it does sound good once it reaches higher revs. Quite aggressive.

[6SpdAltima_Coupe]

ok thanks alot that makes sense..so i guess that means i have pretty much nothing to worry about then?

[Hussain]

i just used a air gun and the bolts came off real easy... and as for loss of low end power, ironicly i actually got better 60 ft times at the track....