Exhaust System with Straight Pipe(s)?

KRUISSR · 04-12-2008, 05:05 PM

Curious, has anyone designed and run an exhaust system eliminating a muffler(s) on their R? In other words, just a simple straight through system from the Cats to the Tips. Wondering how it sounds and the pros and cons regarding the change in back pressure etc. Thanks for any info.

blknblu · 04-12-2008, 05:38 PM

I did mine about a year and a half ago. Took off the muffler and the sound is incredible. You will have no problem with back pressure. It sounds mean and was just the sound I was looking for. I think several others on this forum have done that as well.

Mike Bell · 04-12-2008, 06:12 PM

I also ran mine as a straight pipe system about 1 1/2 years ago.
I didn't quite like the sound so switched to the Magnaflow cat back.
Got the sound I wanted.
Mike

KRUISSR · 04-12-2008, 07:33 PM

Quote:

Originally Posted by blknblu

I did mine about a year and a half ago. Took off the muffler and the sound is incredible. You will have no problem with back pressure. It sounds mean and was just the sound I was looking for. I think several others on this forum have done that as well.

blknblu, I know it's hard to describe a sound, but does your sound more mechanical, tinny, raspy, hollow as opposed to a mellow purr, soft rumble, glass pack kinda sound ?

CQQL_SSR · 04-12-2008, 08:14 PM

I have seen posts where some SSR owners ran straight pipes with an "X" pipe to balance the flow.
I would like to hear a sound clip.
Mike Powell said it sounds just like the side exhaust he made.
There is a sound clip on here of that.

Read the thread and it is post #5 that has the sound clip.

TURN UP THE VOLUME

polished stainless sidepipes

Tom Savini · 04-12-2008, 09:35 PM

A member near CqqlSSR named olaferickson did this about a year or so ago and had a sound clip posted here. It sounded very mean and cool at the same time.
Tom

blknblu · 04-13-2008, 05:27 AM

Quote:

Originally Posted by SSR Blackbird

blknblu, I know it's hard to describe a sound, but does your sound more mechanical, tinny, raspy, hollow as opposed to a mellow purr, soft rumble, glass pack kinda sound ?

It sounds more like a muscle car than anything else. It loud but no as intrusive as you would think.

CQQL_SSR · 04-13-2008, 06:43 AM

Quote:

Originally Posted by Tom Savini

A member near CqqlSSR named olaferickson did this about a year or so ago and had a sound clip posted here. It sounded very mean and cool at the same time.
Tom

Tom, he had two Magnaflow Bullets on his.
They were not straight pipes but real close to it.
Here are the pictures.

Beach potato · 04-13-2008, 07:23 AM

I think GGOAT also had tried this method.

blknblu · 04-13-2008, 09:27 AM

Quote:

Originally Posted by Beach potato

I think GGOAT also had tried this method.

Correct, after speaking with GGOAT I made the decision to go without the muffler.

Scuffy · 04-13-2008, 09:51 AM

Just wondering if I would past the emission without the muffler when I go to inspection?
Scuffy

blknblu · 04-13-2008, 09:57 AM

Quote:

Originally Posted by Scuffy

Just wondering if I would past the emission without the muffler when I go to inspection?
Scuffy

Good question. Since we do not have inspections in Florida I never have had to worry. Maybe someone with this set up in an "Inspection State" can chime in here.

DOOPHUS · 04-13-2008, 10:08 AM

Quote:

Originally Posted by Scuffy

Just wondering if I would past the emission without the muffler when I go to inspection?
Scuffy

I was wondering the same thing, Scuffy.

No experience with New York but I have a feeling it would be a BIG NO here in Arizona and also California.

Not worth the risk and/or hassle.

Curt

!

!

Scuffy · 04-13-2008, 10:12 AM

blknblu,
You guy's have no inspections in Florida. Are you the only state that has none? if so, I'm moving there.
Scuffy

leeb · 04-13-2008, 10:14 AM

Quote:

Originally Posted by Scuffy

Just wondering if I would past the emission without the muffler when I go to inspection?
Scuffy

New York State law might not have a specific restriction but you'd better not drive that setup into the city.

You could always call the DMV and ask them.

KRUISSR · 04-13-2008, 01:27 PM

To clarify what I was thinking of doing was to connect just aft (down stream) of the Y connection, just before where the stock muffler was, which is 3" in dia. at that point. Replace the muffler with a section of 3" pipe and then fabricate a Y section of pipe to again split the flow and connect back to the stock dual outlet piping and out to the tips. Not sure, but doing it this way should not effect emissions testing ......... ??

KRUISSR · 04-13-2008, 01:42 PM

Simplified: I want to replace the stock muffler with a single section of 3" Dia. piping.

CQQL_SSR · 04-13-2008, 01:56 PM

Do they have any noise restrictions there?
I know in MA if it is to loud = no inspection sticker.
I was pulled over for loud side exhaust many years ago.
I told him it was stock from the factory. He let me go.

I don't know what the complaint is about loud exhaust from the SSR.
People ride Harley's with straight pipes, They get inspection stickers.????

hdflstf · 04-13-2008, 02:14 PM

Quote:

Originally Posted by SSR Blackbird

To clarify what I was thinking of doing was to connect just aft (down stream) of the Y connection, just before where the stock muffler was, which is 3" in dia. at that point. Replace the muffler with a section of 3" pipe and then fabricate a Y section of pipe to again split the flow and connect back to the stock dual outlet piping and out to the tips. Not sure, but doing it this way should not effect emissions testing ......... ??

The affect on emissions is a matter of them looking at the exhaust and seeing it was modified - a no go if they want to be a hard case.
Realistically you could do almost anything so long as they just look at the numbers from the exhaust sniffer tube and you have a good set of cats.

Tom Savini · 04-13-2008, 06:22 PM

Quote:

Originally Posted by CQQL_SSR

Tom, he had two Magnaflow Bullets on his.
They were not straight pipes but real close to it.
Here are the pictures.

Charlie just got back from the coast.
I remember one time that he posted a sound clip of a really big cam he had put in and was running it with a straight exhaust. He was changing things around a lot in
a short period of time then he kind of vanished. Have you heard from him. He was from the town where my dad had his dealership. Mansfield, Ma. He is a big guy.
Later nap time...

Maui Mike · 04-13-2008, 07:45 PM

Quote:

Originally Posted by Scuffy

Are you the only state that has none? if so, I'm moving there. Scuffy

None here in Hawaii. They do Annual "Safety" Inspections, but no sniffer test or visual on the muffler.

I spoke to ggoat too and he went with the 3" straight pipe in place of the muffler and loves it. Well, it's not exactly straight, it has to Y for the dual tailpipes.

I'm sure ggoat won't mind me posting part of his PM...

I can't express how PERFECT the straight pipe is. What you describe that you want is EXACTLY how I would describe the straight pipe. It sounds like an old musclecar when idling, it pops and gurgles upon decel, it is quiet when cruising in 6th gear, and when you slam it, it sounds like a cannon shot. It's GREAT.

If you just replace the muffler or the pipe with the stock cats you're NOT going to get what you want no matter WHAT muffler or system you buy. I installed the LOUDEST Flowmaster available at the time, and it was BARELY louder than stock outside, and MUCH louder inside. I tried about 10 mufflers at the time, before I went to straight pipe. The cats muffle a LOT of the engine sound. The straight pipe is QUIETER inside the truck than the Flowmaster was (the Flowmaster accentuated the resonance and deep drone). Again, if you're leaving the stock cats and installing something after the pipes Y together, you're NOT going to get ANYTHING like what you describe that you want. The cats get rid of too much sound alone, and when combined even with a LOUD muffler (such as the Flowmaster, or a race muffler that I tried) the overall sound was VERY sedate. I got rid of the Flowmaster right away. It was a huge learning experience. You could have NEVER convinced me before-hand.

I couldn't ask for a better sounding exhaust, honestly. And, it was $70. All that was done was a Y-pipe was custom made that fits where the stock muffler was. That's it. Nothing more elaborate than that.