Exhaust questions???????????

[1995GrandprixRED2dr]

What size exhaust pipe would you guys suggest running? and what type of cat, mufflers set up would u suggest running for a deep throaty sound?

thx rob

[cutsup1996]

3" high flow flex cat converter, 2.5" mandrel bent piping if possible, if crimp bent still go with 2.5" and dynomax or magnaflow muffler for sure. they DO flow better than a flowmaster, flowmaster is better than stock but a lot of hype and dynomax and magnaflow are better. and of course new o2 sensors, and no resonators

[J]

2.5 inch pipe would be too much unless you modded the hell out of your motor or it's a turbo car, if you still want low end stick with 2.25 with a freer flowing muff, i had a free flowing muff on my car and the low end was gone, but that and a intake at high rpms was bad ass. If its a city cruiser stick with 2.25 but spend the extra cash and get it mandrel bent, for that you'd have to go to a custom shop, not your local citys exhaust shop, around here the guys that does the best work does a lot with muscle cars and has a garage just for muscle cars and he is the only one many of the top racers in town will trust, try to find someone who has a good rep like that. But anyways if its a beater do what you want but if you want quality go with a well known shop and MANDREL BENDING. hope this helps a lil Later

Jay

[sonyman87]

3" high flow flex cat converter, 2.5" mandrel bent piping if possible, if crimp bent still go with 2.5" and dynomax or magnaflow muffler for sure. they DO flow better than a flowmaster, flowmaster is better than stock but a lot of hype and dynomax and magnaflow are better. and of course new o2 sensors, and no resonators

 

if your going with magnaflow go with the magnaflow cat. they make a great combo!

[93GTP]

I think the stock piping is more than good enough.

 

For the best sound and performance:

 

Carsound Hi Flow Cat

Magnaflow Mufflers

Magnaflow Round for a Resonator

 

It's what I have, sounds awesome.

[dkorinko]

I dont know how many of u guys have done this but if u are looking for an extremely easy way to grab some hp and get some meaner sounds check this out. I CANT do this because my exhaust is all welded together but if u are like most people and your exhaust is held together by clamps and flanges, then u can do it. Just un-bolt your cat and take it somewhere away from the car because it will make a mess. You can take a pin, screwdriver, or whatever u can get to fit inside of the cat and pound it with a hammer, All of the nasty shit that they throw in there and that has built up over time will come out, thus creating a MUCH LESS restrictive flow. You can do this if u dont have to worry about emissions, dont care about emissions, or if u are like me and around here they just look under your car to make sure u have one, they dont actually test it for anything. Hopefully someone can use this info. I have done it on 6 or 7 cars and the results from all of them have been great, the most recent one being the best. My buddy has a 93 Civic with a B16 motor swap and i did it for him, his best time with a full exhaust before was a 15.1, he turned a 14.7 at the track!!! He had run open header before and could only get a 14.8, so to be using a full exhaust and being to run a 14.7 was great, truly an easy way to drop 4/10's on his E.T.!!!!!

[slick]

What should i run when im done with my headers. My primaries will be 1.5 inches, crossover will be 2.25 inches. I'm thinking of running 2.5" headers back, but im wondering if that would hurt the performance.

[cutsup1996]

the reason i say 2.5" is because most people cannot get mandrel bent piping. nobody in North Carolina does it and that's of course where i live. and only some w-bods have exhaust kits on the market. 2.5" crimp flows like a 2.25" mandrel so no 2.5" crimp bent is not too big and low end will not be lost. but hey do what you want, possibly see about an electric cutout too, those are baddass, i think edelbrock makes em'

[Aaron]

id say 2.25 mandrel.

 

i am using 2.5", but i am sure i would benefit from 2.75. but i am a 5-speed. shane suggested 2.25 for autos.

 

i have magnaflow resonator, carsound cat, and dual magnaflow staright through muffs. check my site out, i have like 4 pics of my exhaust. at the w-body gathering, my car sounded the best by far. sorry jonh, but my farts sound better(he staright piped it :oops: )

[1995GrandprixRED2dr]

So do you think it would be better if i was too leave the stock piping and go with a high flow cat and new mufflers, I have walker mufflers on it, long story, or should i go with like 2inch piping or whatever. And were should i start it from?

thx rob

[TeeJay3800]

Magnaflow mufflers are becoming very over-rated. Flowmasters are the best on the market for flow and sound. Go with 2.5" mandrel piping with a Catco or other high-po brand cat. No cat is even better for better flow and louder exhaust. Tip diameter has a lot to do with the overall exhuast sound. Go with something wide (3" or more) for a deep sound.

[93GTP]

Magnaflow mufflers are becoming very over-rated. Flowmasters are the best on the market for flow and sound. Go with 2.5" mandrel piping with a Catco or other high-po brand cat. No cat is even better for better flow and louder exhaust. Tip diameter has a lot to do with the overall exhuast sound. Go with something wide (3" or more) for a deep sound.

 

Wow, I don't know where you dug up the "facts" in that post, but wherever you did, put them back.

 

Ok, we'll start off with the better flow claim. How do you figure flowmasters (a chambered muffler) flow better than magnaflow (a straight through designed muffler)?

 

 

And as for sound, that is definetely objectional. But I find it hard to conceive how someone could prefer the tin-canny loud sound of a flowmaster, to the smooth deep sound of a magnaflow. I guess if you just want LOUD but no sound "quality", then flowmaster is best.

 

Running no cat and no resonator IMO is a big no-no, you're car will be way too loud and raspy, and sound like a piece of garbage. That's why I'm using a Carsound cat and Magnaflow round muffler as a resonator.

 

I gotta get some videos up, to show people what a 3.4 should sound like.

[1995GrandprixRED2dr]

OK so i get a high flow cat with a high flowing resonator and some magnaflow mufflers, but how do i determine the size of pipe? I mean i dont want to be spending thousands on my exhaust. How much do u think it may cost me?

Thx Rob

[TeeJay3800]

Wow, I don't know where you dug up the "facts" in that post, but wherever you did, put them back.

 

Ok, we'll start off with the better flow claim. How do you figure flowmasters (a chambered muffler) flow better than magnaflow (a straight through designed muffler)?

 

And as for sound, that is definetely objectional. But I find it hard to conceive how someone could prefer the tin-canny loud sound of a flowmaster, to the smooth deep sound of a magnaflow. I guess if you just want LOUD but no sound "quality", then flowmaster is best.

 

Running no cat and no resonator IMO is a big no-no, you're car will be way too loud and raspy, and sound like a piece of garbage. That's why I'm using a Carsound cat and Magnaflow round muffler as a resonator.

 

I gotta get some videos up, to show people what a 3.4 should sound like.

 

Whoa there Newbie. Don't tell me what to think. I think Flowmasters are the best for sound and performance. You get mad when someone has a different opinion than you? Thats very immature.

[99RegalGS]

I don't know how this can be restrictive.

 

[1995GrandprixRED2dr]

OK so i get a high flow cat with a high flowing resonator and some magnaflow mufflers, but how do i determine the size of pipe? I mean i dont want to be spending thousands on my exhaust. How much do u think it may cost me?

Thx Rob

 

Can we please answer that and not fight with other members?

[Robby1870]

I think its funny how you all think a "high performance" mufflers on a stock setup gives you more power. Oh, and flowmasters are very raspy W-bodies. Just thought I would throw that in to get everyone mad again

[Robby1870]

OK so i get a high flow cat with a high flowing resonator and some magnaflow mufflers, but how do i determine the size of pipe? I mean i dont want to be spending thousands on my exhaust. How much do u think it may cost me?

Thx Rob

 

Can we please answer that and not fight with other members?

 

Your best bet is to stick 2.25in piping. You dont have any major engine work, so stock size is fine. Anything bigger and you lose exhaust gas velocity which means you lose low end torque

[TeeJay3800]

I think its funny how you all think a "high performance" mufflers on a stock setup gives you more power. Oh, and flowmasters are very raspy W-bodies. Just thought I would throw that in to get everyone mad again

 

GRRRRR

[Robby1870]

I think its funny how you all think a "high performance" mufflers on a stock setup gives you more power. Oh, and flowmasters are very raspy W-bodies. Just thought I would throw that in to get everyone mad again

 

GRRRRR

 

hahahahhahaha, I just wanted to be a smart ass

 

Actually, that clip of the 30 series flow master in that other thread isnt bad at all

[93GTP]

"Whoa there Newbie. Don't tell me what to think. I think Flowmasters are the best for sound and performance."

 

Well, first off, I'm no newbie. I was on EFI-Street since 2000/01.

 

And second, you can think Flowmasters sound the best all you want, like I said, thats very objectional and all opinion. I may have went too far in what I said..

 

But you don't just "think" they're better than magnaflow for performance, it's either they are, or they arent.

 

And anyways, back to topic:

 

"OK so i get a high flow cat with a high flowing resonator and some magnaflow mufflers, but how do i determine the size of pipe? I mean i dont want to be spending thousands on my exhaust. How much do u think it may cost me?

Thx Rob"

 

I can try to give you some estimate prices:

 

- 2 Magnaflow Straight Through universal mufflers, I got an ebay seller to get me a pair of them for $100 US plus shipping.

The model number on these is 11224. 2" in/out, offset/center, 14" canister length, 20" overall

- A Carsound High Flow cat, you can get those for roughly $35 bucks on ebay, plus shipping.

- Resonator, well there are lots of options here, lots of people just get standard glasspacks for replacements here, because it's close to the stock design, but will actually function unlike the 10 year old stocker. I tried using a Thrush Glasspack for this, it sounded good, but the damn thing started to rattle like 3 weeks after installation. That is why I recommend the use of a Magnaflow round, I learned my mistake.

 

All the stock piping is good, it isn't that restrictive, the downpipe is 2.5", the cat to Y pipe is 2.25", and the Y is in 2".

 

I'll tell you how much my installs cost, I went to Midas, and to get my mufflers put in I got charged $75 CAN. Which really wasn't that bad because it took a while modifying the ends of the mufflers and just tweaking them into the perfect spot.

 

My resonator and cat installs were roughly $50 CAN each to get installed. Probably would of been cheaper to do it all at once.

 

That's another reason why I'm recommending the use of a cat and resonator, because I know what it sounds like with the stockers left in. A new cat made a big difference, almost eliminated the rasp, my old cat had absolutely nothing left inside it, just completely empty. And a new resonator completely eliminated the rasp.

 

Good Luck

[TeeJay3800]

 

Like he said, how is that restrictive?

 

Also, I have a question for ya. What exactly is behind the design of a resonator? I have been considering getting one installed, but am not very familiar with them.

[93GTP]

Well, restrictive is a relative term.

 

It's MORE restrictive than a Magnaflow. After all it does have chambers...

 

Oh, and as for the resonator, the purpose of it on 60* V6's is to eliminate frequency resonations in the exhaust. For some reason this occurs very strongly in the 60* motors, like way more than other engines. And a resonator just absorbs and cancels out the resonations.

 

They don't always completely get rid of them, but it does help get rid of that classic 60*V6 exhaust rasp.

[TeeJay3800]

Well moving on from the muffler topic. I'm still curious about resonators.

[93GTP]

hehe, Sorry about that, I edited it in after.

 

My car really needed something else after I got my mufflers installed. There was terrible resonation from 2100-2500 RPM. I then installed a carsound cat, it was a lot better but it still wasnt completely gone. So I then put in a glasspack for the resonator, which got rid of the problem to like 99.9%, but I then replaced that with a Magnaflow round (the quality on regular glasspacks is crap, it started rattling like a mofo).