i just put a 3 inch exhaust with a flowmaster muffler on my 85 t/a. it sounds really nice and all at idle alll the way up to about 3000 rpm then it gets really crackely. it doesnt make any difference if i am reving it or just nailing the pedal off of the line it gets all crackely after about 3000 rpm what could cause this. my air pump is not running and i have no catylatic convertor

 

It's a combination of no cat and the Flowmaster. Which one did you use? I've got the 80-series cross-flow.

It's the famous "Blowmaster" sound, as some call it. You either love it or hate it. I wasn't particularly fond of it at first, but it's kind of grown on me (I do have a cat as you can see). I honestly don't know if the sound has changed or if I've just gotten used to it.

If you want to mellow it out a little, put a Dynomax Bullet muffler where the cat is supposed to be.

 

Probably should go w/ smaller exhaust pipes, 2.5" to 2.75"

 

I would put the cat back on. It will help tune the sound and get rid of the crackling sound. Don't worry about power loss, there won't be any that you'll notice.
I have a Catco 3" cat on mine and it does help tune the sound. I had tried it without it and it was very much like yours.

-Ozzy

 

Psst....umm, thats going bigger. You mean 2.25?

 

On RED92BIRD305's sig. it mentions 3" back from y-pipe.

 

I think he meant to try a pipe with a size between 2.5" and 2.75"... However, I think you'd be happier with a catalytic converter on there... I like the sound of my GTA with the edelbrock catback exhaust and my dual cats (my old bird had this system on it with just a pipe in place of the cat).

 

i have been told that a cat will make it sound better and my 92 is also not as crackely and it has a cat. speaking of i just ordered the hooker cat back for that one how does that sound any one know??

 

could you post a sound clip so we know what you are talking about.
I have no cats with flomasters and the sound mine makes over 3000 (closer to 4500) is closer to what you hear when a nascar is accelarating.

 

side note, if you hear a crackely pop, esp on decel, then its most likely from a exhaust leak.

 

u dont know how to post a sound clip

 

i* dont know how to post a sound clip

 

what do in need to post a sound clip and how do i do it

 

Post it the same way you'd post a link to an image that's located on a web server. That means if you have a .wav, .mp3, or whatever, you'll have to transfer it from your computer to a web server, usually the free server space given to you by your ISP. Then you post a link to that file. Very simple.

-Ozzy

 

what can i use to record the file

 

i think i may hav the same issue. i have asmall video file here(700KB) and at around 11-13s in i rev it to about 4000...turn up your speakers to hear it better..

i have hedman headers, a 3" borla cat-back, and remeoved cat. 305 tpi.

heres the vid of my GTA... (0.7MB)

http://www.nf-fbody.com/videos/JustinSmith.wmv

 

To record your sound files there are many ways but I'll give you a few examples using a PC.
You'll need a microphone, that's a given. Then you'll need sofware to capture the sound and encode it to a file format of your choosing. The most common file formats are wma and MP3. A wma file is uncompressed so it's going to be big but an MP3 is compressed so it might only be about 1/4 the size depending on the bitrate you encode.
You can download Windows Media Encoder "here" for free. WME works with video also if you have a camera. Another freeware download is MESSER , I use this one to record from my audio sources directly into MP3s at any bitrate. You'll need the .dll files "Blade Encoder" for MP3s and the "Lame Encoder" for wma files which are downloaded from separate sites.
There are many other ways but these are the ones that I use. The sure way to go would be with the Windows Media Encoder since it is from a trusted source. The other one I've been using for a while and never had trouble but the blade encoder which is downloaded separate from sources in Europe, and you'll need to be carefull where you download from. You can also check Download.com and SnapFiles for more freeware software to record sound.
Remember the WME files are going to be a bit bigger but most sound clip of exhaust are not that long anyways.

Good luck,

-Ozzy