Matt16

Why not just make a sound recording of a 350cu Chevy and play it through your radio or headphones.

stormin94

I have the headers, and I run single exhaust. If you really wanna be cool, you can just split it at the muffler, and have two small outlets, or just mount another exhaust tip on the other side, but that can be your little secret.

DilutedImage

Whatever you decide on, use equal length pipes from the headers to the junction (Y, X, H, whatever).

Strings

I guess I'll have to split it after the muffler. DilutedImage why is it important to run equal length tubes to the junction?

space-junk

iTrader: (1)

Prolly because it wont work the way that it is intended for...
i.e. the scavenging...

Alex 400

yes, by having different size tubes it will put a different amount of back pressure on each side of the engine, making each side run a little different.

abecedarian

regardless of the length of tubing on one side or the other... being equal length isn't really that important... the important thing is to have an exhaust pulse from one 'header' pass the pipe from the other 'header' when the pressure in the other pipe is lowest, that way the pressure pulse draws (creates negative pressure) in other pipe, sucking the exhaust out (a.k.a. scavenging)
so you end up dealing with velocity, which means you want the smallest diameter pipe that can flow the gasses without restriction (any larger diameter would slow the gas velocity down).
it's not exactly rocket science, but the side with the longest run to the 'y' will have a smaller pipe entering the other pipe's stream in order to keep velocity at a maximum, and consequently enhance scavenging.

gte718p

Actually that's should be you want to waste money to lose HP so you can sound cool.
Go buy a Chevy. You need backpressure. You would end up with two 1 inch exhaust and unless you did the cross over right lose significant HP.

91 4Runner

If it's sound you want, here is a muffler for you.... (I know it was for a hope of performance not sound)

http://store.summitracing.com/egnsea...9&autoview=sku

And if you don't end up liking it you can always pluf it again...

CoedNaked

If you want to run duals, I'd run 2" Mandrel bent pipes, MAX, coming off of each side and keep it 2" the entire way. The other thing you might want to consider is run the 2" pipes right beside each other after the X-pipe - the hotter you keep the pipes, the better the exhaust gasses will move.

Alex 400

whoops i thought you meant size of tube. sorry length shouldn't really matter

abecedarian

You mean DOM (drawn over mandrel) not just mandrel bent? All exhaust shops use a mandrel to bend the pipes.

And you may consider the passenger side crossing over to the drivers side, dropping from 2" to 1.875 (1 7/8" about 3/4 of the distance to the drivers side, just to keep velocity up), then dumping into the 2" from the drivers side at about a 60 degree angle.

Strings

Well you guys have convinced me to run single exhaust. Atleast until my yota acquires 2 more cylinders!!!

CoedNaked

I've never heard that. Everything I've heard is mandrel bent or pressure/crush bent (with only few and far between exhaust shops ponying up the money to have an onsite mandrel bending machine). The former being the bends have the same diameter as the straight sections of the pipe, the latter being the bends are crushed to an oval/restricted type of pipe at the bends in comparison to the straight sections. The former having better flow & less turbulence because of the mandrel bends, the latter having the opposite.

RunnerUp

i wouldnt do it, though i personally dont like the look of duals on trucks that dont come stock with them... but if your going to do it, do it right, and do it once.

algranger

if you want the looks you could put a y pipe at the very end of a 2.5" system then youd get a bit of good sound. i always liked the look of the pre rear axle exit pipes at kind of a downward angle with some raw edge angle cut chrome tips like these
edit: but not 4" like that one ^ it might make you look like a bit of a dumbass

just a 22re

i say go with a 1.75in pipes and everything from the headers back!!

91_TOYOTA_4x4

just split it at the muffler if you want duels, it will just be a pain if you try and make it true duel.
listen to this, sounds amazing
[youtube]http://www.youtube.com/watch?v=pGZVVRyuQN0[/youtube]

MaK92-4RnR

thats not dual exhaust.... thats dual inlet to a single outlet.... my system can easily be set up for true dual exhaust, but I didn't want to go that route. Heres a couple pictures, to show everybody.

91_TOYOTA_4x4

o in know haha just showing how it sounds without duels and how awesome it can sound. no point in duels if you can get it to sounds as good as this.