How much would i gain from a EXHAUST. NO OFF TOPIC STUFF PLEASE - Honda Prelude Forum

Jerryscherry · 03-22-2009, 02:51 AM

now that i decided to buy a exhuast, i was wondering if i just change the muffler would i get a gain? i think i have the stock mufflers, or would i need to change the whole piping?

Whats a good brand tahts bang for the buck? dont wanna spend a 1k on greddy or hks full exhaust system.

would just getting a greddy or hks just the exhaust help me gain anything?

my 92 prelude specs

JDM H22A, short ram intake, Dc headers, No cat Straight pipe, under pulleys,

and any so cal prelude meets

i cant find any we should start a meet at DIAMOND PLAZA in ROWLAND HEIGHTS

rayslude · 03-22-2009, 05:08 AM

spend the $300-400 and do it right. Otherwise you're gonna spend ~$100 on an ebay muffler including welding and in 6 months wish you had a catback. I wouldn't expect anymore than 10hp from a catback and ~2 from just a muffler.

edit: $1k for a Greddy system!? WTF are you getting your prices?

death_adder · 03-22-2009, 09:26 AM

If you want to see the absolute most power from your mods, you need a tune.

mooncaller · 03-22-2009, 11:01 AM

Honestly, save your money until you can afford a full system.

What you want to do by replacing the exhaust system is to have the flow of gasses less restricted. Ideally you would have larger diameter throughout.

So, for now, I would just save until you can switch the whole system for 2.5" or 3", and get a new header. That, or, at least do everything from the down pipe back at once. Otherwise, you basically have a fart can.

And yes, you will want to get it tuned.

Basically, if you're not going to do it right, there's really not much point in doing it at all.

- Corey

sexylude97 · 03-22-2009, 11:10 AM

run custom.

darkstar67 · 03-22-2009, 11:14 AM

Do what i did!
Buy a header/collector (not dc, i cracked mine)
go to carthage tn.
get the old muffler man (no really, hes like 60) to weld pipe from collector back and weld a muffler of youre choice on.
it costed me 125 dollars excluding the muffler, for 2 1/4 all the way back with bungs and a place for my cat.
i think the guy is on crack, but its stainless and he did a good job.
screw 500-700 for a name brand.
get a REAL pro to pipe it for you with as less bends as he can and you choose the muffler.

rayslude · 03-22-2009, 03:24 PM

yeah, who needs a resonator or a cat, they are over rated...

and also, "tuning" isnt something you can do with a magical blue screen V-AFC...

darkstar67 · 03-22-2009, 03:36 PM

lol, our county's MARTA doesnt think they are over-rated!
**** them. its only six bolts...
but i just dont like to look like a ricer when my exhaust is that loud...

Jerryscherry · 03-22-2009, 05:05 PM

ahah alright i guess ill save for the full piping exhaust system and new headers.. someone was telling me my stock exhaust was too restricted

v8killaz · 03-22-2009, 05:06 PM

Quote:

Originally Posted by Jerryscherry

ahah alright i guess ill save for the full piping exhaust system and new headers.. someone was telling me my stock exhaust was too restricted

u will gain like 10-15 whp

zlively127 · 03-23-2009, 01:59 PM

2.5-3.0 piping? isnt that a bad idea unless you have a turbo? isnt 2.25-2.35 ideal for n/a? with too big of piping n/a you lose power..

Quote:

yeah, who needs a resonator or a cat, they are over rated...

Sad days, Albuquerque made "noisy" cars illegal. After several warnings i eventually broke down and welded on a stock muffler to my 2.25" piping

MLBZ521 · 03-23-2009, 02:22 PM

Quote:

Originally Posted by zlively127

2.5-3.0 piping? isnt that a bad idea unless you have a turbo? isnt 2.25-2.35 ideal for n/a? with too big of piping n/a you lose power..

No, 2.5" - 3" Piping is not to large. 2.5" should be preferred while 3" will still make power over 2.5" Piping, while still being NA.

minilogoguy18 · 03-23-2009, 06:57 PM

MLBZ521, what's a good header to run with a 3" exhaust? Further down the line when I've built up the H22a I'm about to buy I wanna upgrade to 3" but most aftermarket headers are 2.5" at the end of the collector. I guess it could be custom too right? The exhaust will be custom, f**k spending $500+ on a bunch of steel piping.

MLBZ521 · 03-23-2009, 08:07 PM

Depends on the build and your budget and what you want to spend..

There are a lot of junk headers and a lot of "better looking" than stock headers, nothing to help with performance..
There are a few decent to good performing off-the-shelf headers on the market now-a-days..
And there are a few really great performing custom headers also.. SMSP, HyTech, RMF. Though I don't know if RMF makes them any more or not.. Heard Randy quit producing them a long while back..

Besides that, custom in my book is the way to go. I actually just saw a custom 4-1 3" Header here local to me for sale. I wanted to get it so bad, but don't have the funds for anything other than fixing my car after it being Stolen..

$500 on Piping? lulz That's nothing.
I had Dave @ SMSP make me a custom Header and bought an Exhaust Kit, Cat, and Resonator from him.. You're looking at spending about $2000..

And the saddest part about it, is I never used any of it... Worthy of the price, just not of sitting in the box..
Anyone wants the Exhaust, I'm selling it. It's still brand new..

ludemaster4040 · 03-23-2009, 09:15 PM

all i can tell you is that you better get something less than 93db cuz i jus got a ticket for having tooo loud of an exhaust! yeah i live in Walnut not tooo close to where you live! so just be careful!!

yeah me too i cant find any ppl who live in my area...yeah some one should start a meet in ROWLAND Heights!

rayslude · 03-24-2009, 03:25 AM

Quote:

Originally Posted by MLBZ521

And there are a few really great performing custom headers also.. SMSP, HyTech, RMF. Though I don't know if RMF makes them any more or not.. Heard Randy quit producing them a long while back..

+1, all good brands

IAPrelude · 03-24-2009, 04:56 PM

At what point does exhaust tubing begin robbing low-end torque? I've heard that 2.5 is the ideal size for the H22.

minilogoguy18 · 03-24-2009, 09:28 PM

^Usually as long as it's not too straight or large in diameter you'll have torque gains, 2.5" is good if you wanna keep torque, any larger you'll lose a lil but not much.

I don't need to worry about decibel levels or any of that, I'm not in Cali(thank god for many reasons). Here all the rednecks run way louder exhausts than my 4 cylinder could make on their jacked up trucks and beat down mustangs. :P

MLBZ521 · 03-24-2009, 10:31 PM

No no no no no no no no no no no no...............................!!!!

Setup:
JDM H22A
Removed Butterflies in the Intake Manifold
SRI
DC Crap 4-2-1
SKunk2 Cam Gears
Tuned on Crome

Skunk2 Mega Power Exhaust - BOLD LINE
3" CRUSH BENT Exhaust with Resonator and Vibrant Flat Black Muffler - Normal Line

Untuned 3" - Normal Line
Tuned 3" - BOLD LINE

Tuned 2.25" - Normal Line
Tuned 3" - BOLD LINE

NOW.. Imagine Mandrel Bent..
NOW.. Imagine with a REAL Header.. SMSP, HyTech, RMF..
Or even a decent one off-the-shelf one..

Now please, PLEASE, do NOT spreed information as Fact unless you can prove it is true.. Way to much hearsay comes from people doing this.... ((I am not speaking to anyone directly, so I hope I don't offend anyone..))

This is NOT my Dyno or Setup or Car..
Original Thread: 3" Catback Exhaust on Stock JDM H22A (Dyno) - Honda-Tech

Thank you, class dismissed..

Jerryscherry · 03-25-2009, 02:09 AM

Thank You Mlbz521!!

Tarnoth · 03-31-2009, 04:09 PM

Definatly all good information. The only thing i had to ask, is with all these systems, how many of them would still allow me to pass smog? Unfortunately i DO live in California, so i have to worry about that while i am trying to upgrade.

Duston · 04-01-2009, 06:33 PM

I would stay away from the brand names catback systems and find you a good muffler shop. My reasonings for this is because for what some of the systems cost you could have a shop run 3in all the way back and buy hondata for what they cost. I'm from texas so 2.75in cat-back was quoted at $250 once I understood the spanglish.

prepreludesh · 04-01-2009, 07:06 PM

Is it off topic to ask that I thought that the first year H22 VTECs were introduced to US preludes was 1993? If so, does your car have a swap done to it?

MLBZ521 · 04-01-2009, 08:04 PM

Quote:

Originally Posted by prepreludesh

Is it off topic to ask that I thought that the first year H22 VTECs were introduced to US preludes was 1993?

Yes and yes. :P

Quote:

Originally Posted by prepreludesh

If so, does your car have a swap done to it?

Quote:

Originally Posted by Jerryscherry

my 92 prelude specs

JDM H22A, short ram intake, Dc headers, No cat Straight pipe, under pulleys,

I would say he had a swap..