No updates for OFN my ***!

Congrats on getting her started. Look forward to the first rock launch. Hope your girl's back is up to it.

 

Dynomax Bullets!!!!!

 

When you say bullets I assume you are referring to dynomax?

J. J.

 

Sorry, I posted this and then left town immediately on a business trip. I will update ofn next time I'm at a computer. (on phone now.)

J. J.

 

I agree, add length to the pipes and point them away from you. I have a similar setup, except a few more cubes, and 1 7/8 headers. 3.5 to an X pipe to E cutouts. Then huge dynomax super-turbos so its nice a quiet when my girlfriend is in the car. My cutouts are right behind the seats at the moment, going to scare small children for sure.

 

Moroso Spiral Flows

 

Single chamber Flowmasters

or

Violators (forget Mfg....brain fart)

 

Dynomax makes a popular bullet muffler. There are many other companies that do as well. They are all basically the same thing. I think summit racing may even make one. They are cheap and do a great job at quieting it down a bit, though they do not really alter the sound. Get on youtube and browse around until you find something you like. There are more exhaust videos on there than you could possibly ever watch!

 

Magnaflow,

Flowmasters or any other style of off chambered mufflers inhibit flow, rob horse power, and sound like ***.

 

A 1 chamber?

On a stock car we MIGHT be talking 1-2HP, MAYBE over a straight through bullet type design muffler.. I would be surprised if it was that much honestly.
Have you ever heard a 1 chamber in person?

https://ls1tech.com/forums/15300259-post16.html

https://ls1tech.com/forums/generatio...s-muffler.html

 

She sounds great. Don't change anything.

 

Just so you know I used the dynomax bullets to quiet down the sweet thunders significantly (which seem to be similar to power sticks)

The bullets are pretty quiet around idle and pretty loud at wot. But still a lot quieter than you would expect for a straight through resonator

 

This may help:

https://ls1tech.com/forums/multimedi...pics-vids.html

 

Yes, it does. I liked the Flowmaster a lot better. I'm glad you posted this. I am in Atlanta on a business trip and made a stop by the Summit store and almost bought some XR1's. I held off because I just couldn't bring myself to spend that much. Now I'm almost certain that I'm going to go back later and get some Flowmasters. Thank you.

J. J.

 

That single, single chamber 4" Flowmaster sounds great! Closing my eyes, I might mistake it for my Nova with a small block 350 and dual single chamber 2-1/2" Flowmasters with an H pipe. It sounds almost identical. I'm a huge fan of the single chamber Flowmaster sound. I can't wait to hear my LY6 fire up through the same exhaust.

 

patooyee, here is a recording of my Nova running (badly!) after a cold start. I can't remember why I recorded it like that. I think it was on one of the first startups so I was excited and anxious to record the sound. This was many years ago. At the time of the recording it was a tired small block 350, ported 441 iron heads, dual plane Performer RPM intake, and very mild comp XE268H 224/230 .470/.480 110LSA. The exhaust was Dynomax long tube headers, dual 2-1/2" pipes with an H pipe, and two single chamber Flowmasters with turndowns in front of the axle.

http://cjnn.xtremefabricator.com/med...str2chmbrs.mp3



Later I put some Edelbrock heads on it and a bigger cam. It really woke up, but honestly the exhaust sound was still very similar. The only complaint I have is a little drone it had around 1,800rpm. It was right in that cruise RPM range so when you're just putting along say in a parking lot or in a residential neighborhood that drone can get really annoying.

I hope my LY6 is as snappy as your LS2. Empty tranny probably helps, but even so that thing gets up to RPM in a hurry! I only give you crap about not updating on OFN because I miss the progress. You've done some great work with the buggy and I always looked forward to the updates. Seems like you must have gotten pretty far to have her fire up already.

 

I made a bunch of phone calls this morning, Talked to flowmaster and magnaflow. From what I gathered from both techs 2-4 percent between a single chamber to a flowmaster outlaw muffler which still isnt a completely smooth straight thru design, so id say somewhere in the 4-5% range is a good number between them. As far as sound, I perfer a deep sound not a higher pitched raspy


OUTLAW:



MAGNAFLOW:

 

Dynomax bullets will knock down the noise level, maybe end up around 80%.

I like Dynatech split flows, XR1's, Dynomax... All good.

 

Say what you like about Flowmasters.... but with open pipes or the 40's....my car runs the same (less than 1 MPH and less than tenth difference)

 

Hooker Maxflow! It's a strait through muffler with a little more packing that most. It makes the tone DEEP but will scream at WOT.

Oh and just for reference my setup is ARH 1 3/4 headers, catless dual 3" to single 4" with a single 4" Hooker MF and a turndown.

http://youtu.be/2O1tiS2s-8Q