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Best y pipe???

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Old Sep 29, 2015 | 07:22 PM
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Default Best y pipe???

I'm having a hard time searching from my phone but I've seen some people mention cutting out the y and welding in a better y. I just ordered a set of speed engineering 1 7/8 and im in need of a y pipe. Should I just order a speed engineering y pipe? Or is there a better flowing y pipe available? Or should I get the cheapest y pipe available and weld my own y in and if so what y do I get to weld in?
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Old Sep 29, 2015 | 07:46 PM
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Get the SE Y-pipe with your header order. Cut off the reducer and the merge exit is now greater than 3"....that's what I did and have little to no rasp.

Last edited by ragtopz28; Sep 29, 2015 at 07:58 PM.
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Old Sep 29, 2015 | 07:49 PM
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Speed engineering makes a decent looking y-pipe but as ^^ said it requires a bit of work.

You could get that, or buy yourself a flowmaster merge from summit and get a local muffler shop to use it to connect your headers to the rest of your exhaust.
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Old Sep 29, 2015 | 07:51 PM
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Originally Posted by ragtopz28
Get the SE Y-pipe with your header order. Cut off the reducer and the merge exit is now greater than 3"....that's what I did and have little to no rasp.
Not a bad plan. Maybe I could add a 3.5" cutout there .
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Old Sep 29, 2015 | 08:13 PM
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Y dick around with all that... buy a kooks y pipe in be headaches ahead!
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Old Sep 29, 2015 | 09:00 PM
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Originally Posted by high n dry
Y dick around with all that... buy a kooks y pipe in be headaches ahead!
What makes the kooks better?
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Old Sep 30, 2015 | 10:20 AM
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Drive it on headers to an exhaust shop and have them do true dual over axle.

The best Y is no Y.

I'm going Friday to have my SE Y converted to dual 2.5" over axle into bullets.

Regardless of the flow properties of a large setup Y, a 2 to 1 to 2 exhaust setup like a 4cyl every-mobile on a muscle car makes hotrod Jesus cry.
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Old Sep 30, 2015 | 10:53 AM
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If you are trying to stay low cost I recommend sticking with the Speed Engineering Y-pipe. While it may not be as efficient as a true dual setup, its a decent part for the price.
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Old Sep 30, 2015 | 11:21 AM
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Originally Posted by CoolAid
Drive it on headers to an exhaust shop and have them do true dual over axle.

The best Y is no Y.

I'm going Friday to have my SE Y converted to dual 2.5" over axle into bullets.

Regardless of the flow properties of a large setup Y, a 2 to 1 to 2 exhaust setup like a 4cyl every-mobile on a muscle car makes hotrod Jesus cry.
I understand true duals are best for hp. But I don't want the headache of clearance and I also want the 2 tips out the back .
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Old Sep 30, 2015 | 01:21 PM
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Originally Posted by gsxkid
I understand true duals are best for hp. But I don't want the headache of clearance and I also want the 2 tips out the back .
I agree and that is how I am set up. A well setup 3" Y with cutout isn't that restrictive + you can have the stock(ish) db level for everyday driving. My cut out open was worth 10hp over my hooker aerochamber muffler w/stock tips.
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Old Sep 30, 2015 | 02:00 PM
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Originally Posted by CoolAid
Drive it on headers to an exhaust shop and have them do true dual over axle.

The best Y is no Y.

I'm going Friday to have my SE Y converted to dual 2.5" over axle into bullets.

Regardless of the flow properties of a large setup Y, a 2 to 1 to 2 exhaust setup like a 4cyl every-mobile on a muscle car makes hotrod Jesus cry.
Lol @ 2.5" exhaust. Cute.
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Old Sep 30, 2015 | 02:06 PM
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Originally Posted by CoolAid
Regardless of the flow properties
You guys miss this part? I never said dual was best for HP or that dual was superior in flow.

Sorry I made fun of everybody's minivan exhaust design on steroids.
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Old Sep 30, 2015 | 05:36 PM
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Originally Posted by CoolAid
You guys miss this part? I never said dual was best for HP or that dual was superior in flow.

Sorry I made fun of everybody's minivan exhaust design on steroids.
I'm not trying to make any arguments here. I'm also not looking to run true duals. I'm just looking for the best option for a y pipe.

Right now I'm leaning towards the s.e and cutting the smaller end off and adding a 3.5" cutout. That may not be true duals but shouldn't lose to much power to true duals.
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Old Sep 30, 2015 | 06:16 PM
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Whichever Y, make sure you add a blend merge in. I just drove home with that horrible resonance and it sounds so bad in the car. Windows down sounds great but with them up you are subject to both headers smashing their flows together right under your console. All the SE stuff is good stuff for fitment and metal quality, it just desperately needs a channeled merge at the Y for it not to sound hillbilly status.
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Old Sep 30, 2015 | 06:18 PM
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If money is not an option, yet quality not sacrificed there are three choices.

1. Kooks, or American Racing
2. Buy 4 30" pieces of stainless and your own Y pipe with a FM, Magnaflow and have an exhaust fab it up for you.

If you are looking to come out cheap buy the SE. But I must warn you with a resonater only style muffler be prepared for an unwanted rasp or high pitch ping noise.

If you want to tone that rasp down, buy a magnaflow Y and have it welded in place of the SE merge.
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Old Sep 30, 2015 | 06:36 PM
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I also don't want to argue....opinions/perceptions vary. I will say this, I've owned crappy merges (to remain nameless). My old y-set up I welded in a FM merge and it took away ~80% of the rasp (huge improvement). I was very impressed with the lack of rasp after I modified the SE merge-to cutout to muffler. Some will say any open exhaust will sound like a clapped out farm truck. I say the modded SE is the best sound so far. IMHO
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Old Sep 30, 2015 | 08:45 PM
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Do the weld up merges help with HP and rasp or mostly for the rasp?
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Old Sep 30, 2015 | 08:57 PM
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You can probably see slight HP increases with proper merges. Exhaust velocity is increased without the two sides slamming into each other and creating turbulence. Same theory and reason people want merge spikes in the collectors of their headers. It's an every little bit helps type thing though, not a major HP mod difference.
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