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Old 02-05-2017, 02:05 PM
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Full Exhaust Setup

I want to install a new exhaust system. I'm looking for the most gains without the rasp and f-cannon sound, just a good note that's not too loud for driving around town.

For header I've read that Hytech and Vibrant are the way to go. THIS
Thinking about a magnaflow 2.5" high flow cat
Not sure about the cat back.

Its difficult to judge audio clips of catback when they are running stock header and cat. Also, it doesn't seem like these parts available in the high numbers that they once were. Any ideas?
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Old 02-05-2017, 02:55 PM
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Re: Full Exhaust Setup

1999 Honda prelude base:

- H22A4

- Private Label Manufacturing (PLM) "Tri-Y" exhaust manifold. (Hytech replica)

- Magnaflow 447206 high-flow cat

- Vibrant 1141 14"x2.5" resonator

- OBX "twin loop" muffler (Mugen replica)

- 2.5" tig welded, mandrel bent stainless steel pipe from start to finish.





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Old 02-05-2017, 05:23 PM
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Re: Full Exhaust Setup

Call me a plagiarist, but I think I'm about to copy you. That sounds powerful without being annoying. Should have came that way from factory.

How does it sound when youre hitting vtec? Have you dyno'd, or what do you estimate the gains to be? The HyTechs claimed 8-11hp if I remember correctly.
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AEM CAI 21-406B
PLM H-Series Tri-Y, Magnaflow 447206, OBX Racing Sports MG01, 2.5" Mandrel Bent Tubing
Megan front/rear strut tower, and lower tie bars
HFP ground effects, spoiler
Enkei EKM3 17x7
JDM fog lights
Hydrographic CF interior accents, seat embroidery

Video of exhaust demo
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Old 02-06-2017, 08:35 AM
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Re: Full Exhaust Setup

for full gains you need engine management & tune

3" gives the most power, but of course IHE upgrades wont do much for otherwise stock engine
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Old 02-06-2017, 06:17 PM
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Re: Full Exhaust Setup

When looking at the install of the header it mentions notching out the subframe. How much cutting did you need to do and do you feel like it had a negative impact on the structural integrity?
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AEM CAI 21-406B
PLM H-Series Tri-Y, Magnaflow 447206, OBX Racing Sports MG01, 2.5" Mandrel Bent Tubing
Megan front/rear strut tower, and lower tie bars
HFP ground effects, spoiler
Enkei EKM3 17x7
JDM fog lights
Hydrographic CF interior accents, seat embroidery

Video of exhaust demo
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Old 02-06-2017, 11:41 PM
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Re: Full Exhaust Setup

Quote:
Originally Posted by TypeT View Post
3" gives the most power, but of course IHE upgrades wont do much for otherwise stock engine
I don't think 2.5" vs 3" matters for these cars. We are not producing enough exhaust gasses for it to make a difference.

Watch this episode of Engine Masters where they compare 2.5" vs 3" on a 345hp/400tq small block chevy. The 2.5" makes -0.6hp and +0.3tq compared to the 3" It only starts to matter when pushing +500hp as they showed in another video.

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AEM CAI 21-406B
PLM H-Series Tri-Y, Magnaflow 447206, OBX Racing Sports MG01, 2.5" Mandrel Bent Tubing
Megan front/rear strut tower, and lower tie bars
HFP ground effects, spoiler
Enkei EKM3 17x7
JDM fog lights
Hydrographic CF interior accents, seat embroidery

Video of exhaust demo
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Old 02-07-2017, 01:05 AM
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Re: Full Exhaust Setup

not to be a dick but it doesn't matter what you think. its been proven 3 inch makes the most power on h series
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Old 02-07-2017, 01:38 AM
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Re: Full Exhaust Setup

Quote:
Originally Posted by SoFlaKidd View Post
its been proven 3 inch makes the most power on h series
K serie also and even builded B serie engines benefit from 3"
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Old 02-07-2017, 03:03 AM
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Re: Full Exhaust Setup

That wasn't dickish at all.

So I showed evidence to support my claims with a well funded and produced video with dyno graphs. Where's the evidence to support your claim?
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AEM CAI 21-406B
PLM H-Series Tri-Y, Magnaflow 447206, OBX Racing Sports MG01, 2.5" Mandrel Bent Tubing
Megan front/rear strut tower, and lower tie bars
HFP ground effects, spoiler
Enkei EKM3 17x7
JDM fog lights
Hydrographic CF interior accents, seat embroidery

Video of exhaust demo
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Old 02-07-2017, 06:43 AM
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Re: Full Exhaust Setup

^ no Honda engines there so useless post

you should educate yourself about a car you have

3" Catback Exhaust on Stock JDM H22A (Dyno) - Honda-Tech
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Old 02-07-2017, 11:44 AM
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Re: Full Exhaust Setup

Quote:
Originally Posted by ravedojek View Post
That wasn't dickish at all.

So I showed evidence to support my claims with a well funded and produced video with dyno graphs. Where's the evidence to support your claim?
preludes don't use Chevys motors.
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Old 02-07-2017, 05:48 PM
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Re: Full Exhaust Setup

Quote:
Originally Posted by ravedojek View Post
That wasn't dickish at all.

So I showed evidence to support my claims with a well funded and produced video with dyno graphs. Where's the evidence to support your claim?
all over the internet
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Old 02-07-2017, 06:09 PM
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Re: Full Exhaust Setup

The principals of physics are the same no matter the application. What holds true for one NA motor should hold true for all NA motors.

I do appreciate you providing a link to a decent write up so I can educate myself. I do not appreciate snappy come backs. I thought we are all on this forum for the same goal.

I will say that I am still skeptical, it sounded like there were other factors that could have impacted the results. Or there's always the fact that not every dyno run yields the same outcome. Do you have any other links that I could read. I will admit you guys have more experience with these motors than I and I'm always open to possibilities. I enjoy when someone proves me wrong, it means I've learned something.
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AEM CAI 21-406B
PLM H-Series Tri-Y, Magnaflow 447206, OBX Racing Sports MG01, 2.5" Mandrel Bent Tubing
Megan front/rear strut tower, and lower tie bars
HFP ground effects, spoiler
Enkei EKM3 17x7
JDM fog lights
Hydrographic CF interior accents, seat embroidery

Video of exhaust demo

Last edited by ravedojek; 02-07-2017 at 08:47 PM.
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Old 02-08-2017, 01:45 AM
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Re: Full Exhaust Setup

Quote:
Originally Posted by ravedojek View Post
What holds true for one NA motor should hold true for all NA motors.
engines use different technology so theyre not the same

specially V6/8 vs these 4 cylinder ones

Quote:
Originally Posted by ravedojek View Post
I enjoy when someone proves me wrong, it means I've learned something.
but it makes us to do the work for you and we get nothing out of it
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Old 02-08-2017, 02:24 AM
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Re: Full Exhaust Setup

TypeT, aren't you the guy that told AcedPRELUDE that 3 inch exhaust is "not needed and its too noisy for many people"?

and told 01PreludeBlue that when it came to Kon's dyno "I dont really trust in those numbers" because "and if you dont do those dyno pulls at the same day/same time weather makes it unaccurate"?

You sound as skeptical as me.

Get nothing out of it? You get the satisfaction of schooling me
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AEM CAI 21-406B
PLM H-Series Tri-Y, Magnaflow 447206, OBX Racing Sports MG01, 2.5" Mandrel Bent Tubing
Megan front/rear strut tower, and lower tie bars
HFP ground effects, spoiler
Enkei EKM3 17x7
JDM fog lights
Hydrographic CF interior accents, seat embroidery

Video of exhaust demo
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Old 02-08-2017, 03:30 AM
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Re: Full Exhaust Setup

^ when I came into prelude game I was like you - "3" is too big", but then again I have learned more and numbers wont lie.

And its about what do you want from your car/build.

When building a daily driven car noise and ground clearance play some role there and of course the fact that its much more easier (and cheaper) to get 60mm catback than custom 3" exhaust.

So people have different ways to build their cars and of course compromises to be done. But in power-wise 3" seem to work the best.

If I could choose new exhaust for my car, Id make some compromise (again) and get 70mm (2,75") one there. But for me its too expensive to get custom one done when I have my 60mm Skunk2 which is working "good enough".

if you want to go custom:
Mandrel Exhaust Piping Kits - KTeller
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Old 02-22-2017, 09:46 PM
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Re: Full Exhaust Setup

Quote:
Originally Posted by SirSSpec View Post
1999 Honda prelude base:
- H22A4
- Private Label Manufacturing (PLM) "Tri-Y" exhaust manifold. (Hytech replica)
- Magnaflow 447206 high-flow cat
- Vibrant 1141 14"x2.5" resonator
- OBX "twin loop" muffler (Mugen replica
- 2.5" tig welded, mandrel bent stainless steel pipe from start to finish.]
I got my car back yesterday. I didn't do the resonator. I'll record some videos this weekend. I couldn't be happier.
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AEM CAI 21-406B
PLM H-Series Tri-Y, Magnaflow 447206, OBX Racing Sports MG01, 2.5" Mandrel Bent Tubing
Megan front/rear strut tower, and lower tie bars
HFP ground effects, spoiler
Enkei EKM3 17x7
JDM fog lights
Hydrographic CF interior accents, seat embroidery

Video of exhaust demo
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Old 02-25-2017, 08:57 PM
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Re: Full Exhaust Setup

I did a few runs. I'm happy.

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PLM H-Series Tri-Y, Magnaflow 447206, OBX Racing Sports MG01, 2.5" Mandrel Bent Tubing
Megan front/rear strut tower, and lower tie bars
HFP ground effects, spoiler
Enkei EKM3 17x7
JDM fog lights
Hydrographic CF interior accents, seat embroidery

Video of exhaust demo
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