sup guys i just finished my true dual set up today! i started yesterday at 10 am in the mornin and ended today. it was a b**** to do lol. my dad and i assembled it. hes welder he does it for a livin. but here are some pix of the set-up, i dunno if there was a better way but this is the way i did it so then it wont be in the middle of my tranny and driveshaft if i have to remove them. well hope u enjoy the pix. if u have any comments pls post. thanx

 

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looks great dude, what sort of hp gains are you anticipating?
how does the fitmit look? since they're straight i'm guessing you having to run them lower than the stock ones?

 

umm about the hp gains i dont kno lo it looks great ill take a pic from the back under the car also so u can see it.

 

HEY GUYS MY DADS A WELDER lool ahh **** i want u to drive to my crib so i can hear how loud u are *****. I bought my racing beat headers so im gettin there

 

more pix..

 

lol stupid

 

rust is NOT your friend.............

 

lol so.....

 

How loud is your setup? I just got a RB True Dual header with custom dual pipes to a single exit Apexi muffler and it is loud as hell.

 

I don't like it. It looks like you guys used crush bent piping for all the bends, and the two 90s at the muffler's probably isn't great for max flow.

 

good going on doing a custom project, but your ears are going to bleed. it was bad enough when i had my RB header and Apexi N1s...

 

ummmm..... correct me if i'm worng....... but wouldnt u lose hp by doing that......... dosenet that mess with the exhaust scavaging(think thats the term)....... most v8 cars run a H-pipe or an X-pipe(corvetts run X-pipes) because exhaust flows better then if u were to just run 2 pipes striaght back

 

but his dads a welder....lol

^^^yo noel he's right it looks like yall crushed the sh_ out of the pipes on the bends.

 

Crush bent pipes are not suitable for a performance exhaust I would have spent the few extra dollars for mandrel bends and gotten 2x45 degree bends not the 2x 90s, you're going to make more noise than power with that setup

 

The one that's always for sale? I thought you were going to SDJ it up?

 

Yeah I was, but I got this setup (RB Dual Header, dual to single pipe, and apexi muffler) for 370 so I couldn't pass on that. Has that system been for sale before because I didn't notice?

 

ill give it 2 months before u break it, that exhaust is pretty low.....but then again ur car is pretty high hahahahhaha

 

Is it one large peice? Square-ish flange? Collect right before the muffler?

 

You should have put both cans on one side like I am doing.

 

its a good thing his RX's a 4x4 otherwise those would get so fucked up so fast...sooo low...

You should post a soundclip. Im interested in how loud it is. i hope there arnt many cops around where you live otherwise you're screwed.

 

lol well it looks very low but trust me it isnt. and if i could i wouldve put it up high but it was hitting under the car already as u see it . imma post a sound clip i just need to buy a usb wire for my camera.

 

well to tell u the truth. i can feel a lil more power than i had b4. and now i can run it to 8-8.5 rpm with no hesitation. and i also did it because its different im tired of seeing the same damn thing. every1 wants apexi n1 and all that other crap but i just wanted to be different.

 

Hmm.

A for Effort.

C for execution.


D for true duals.

Yes it is less restrictive and therefore more power than the stock multi cat crap.

However.
They need to be tuned to get the proper scavenging from the engine.

Either A... Tuned length un-collected all the way back. (Good luck unless you have a engine dyno and a lot of room to pick a nice harmonic length for a given RPM... otherwise you are in the weeds guessing)

Or B.. Collected. Either Short, or Long. I personally prefer long. Many prefer short. BUT. YOu need once again to make sure that the collection point you have.. and the tube diameter is correct for YOUR APPLICATION. Just cause Joe blow uses 2" ID pipes with a 22 Inch collection point with his motor doesnt mean it will be right for your stock one. You may be better off with 2" OD and a RB short collected pipe for the stocker you drive. OR.. maybe its ported.. maybe the long collected is better. The resonators will give more effective length.. (Ever do speaker design?)


In a nutshell... LOOK at a 2 stroke dirtbike. What happens when you have a tuned exhaust on one? It rips at higher RPM that the pipe is tuned for. Have stock exhaust.. its fine.. screams. Streight pipe? Screams a lot louder... but makes no more power. Tuned exhaust? There ya go.

No valves to interrupt the exhaust flow etc.. we need to extract the exhaust, and also have a reversion wave to prevent exhaust flow until we are ready for it to bounce back at the proper time... and pull any exhaust that is behind it with it.

Really.. you have exhaust that you like. Good. Its different.. and you like it. Thats what counts.

If I were you.. I would invest in a RB short collected header, run a splitter from that out to your duals, and call it a day. You get the scavenging/tuned exhaust, and you have duals that you made up. Shoot.. keep em seperate from the header back. It will have tuned noise.. it will be loud.. and it will rip and make good power. That seems to be what you want.. /shrug

 

haha those 90 deg sections are crappy kragen exhaust pipes. They might work but this exhaust seems a little barbaric to me. I wonder how well it will perform?