6G Celicas Forums

What is a decibil, and how is it measured?




This post has been edited by GriffGirl: Feb 6, 2010 - 2:17 AM

so i have a 94 gt, and i wanna get a header for it and ppl say its going to sound like crap without the cat, but sence the cat is right off the manafold, and the new header is going to get rid of that is it worth it or is it going to sound like crap?

Well you may hear different opinions but I don't think it will sound bad at all. That's exactly what I did when I got my '94 GT coupe over 2 years ago. Here's the link to my Photobucket album with a couple of video clips of how my car sounded then '94 Celica Exhaust Clips . When I took these clips all I had done to the car was a 4-1 stainless steel race header and cold air induction. The rest of the exhaust was all the stock exhaust that had never been touched. You are also right that when you install the header it does away with the cat - as long as you have a Fed/Canada car. The Cali cars also have a cat under the car. When I get some time I'll post some new vids with my new exhaust that I had installed last month (full 2.5 inch stainless from the header back with Aero Turbine resonator and muffler. It also has an electric cutout just past the downpipe for the "drag-car" sound and power at the push of a switch or button. To answer your question - yes, it's worth it.

This post has been edited by bdawgbp1: May 4, 2010 - 9:46 PM

It will be raspier in higher RPMS... and by raspy I mean lawnmower on steriods raspy.

When I put my headers on, I also had my exhaust redone.
Its up to you, but a combination of resonator and muffler would make that raspy sound a lot better.

i have headers and a cannon on my car, its not raspy at all, it sounds great actually

Found a header for the 7a-fe on ebay:

http://cgi.ebay.com/ebaymotors/1994-1995-1...sQ5fAccessories

This looked good, and cheap right?

Is this bolt on, like the seller says?

it is about 3 inches short and you will have to have a shop make it fit right

Okay, thanks! How do you know? The seller says that: "Direct Bolt-on Installation, Require NO modification". But, everybody lies...!

soon to have pics up of my exhaust - dual side exhaust with dual tips coming out of my boomer skirts

What would you think about this system:

- free flow cat (don't know yet what...)

- Aero AR25 resonator
http://www.aeroexhaust.com/index.php/reson...-resonator.html

- Aero 194 muffler
http://www.aeroexhaust.com/index.php/muffl...small-tank.html

- Some tip for muffler

What would you think, do I need ear plugs?

Does anyone have this Aero resonator and Aero muffler configuration?

i have a resonator straight pipe to a aeroturbine muffler but its the cannon tipe i like the way they sound but mines wayyyyyy loud

Thought i posted in here, but i guess not.

Well....after riding around with an open down-pipe for a year, i figured it was time to put the exhaust together, weld it up, and hang it.

Heres the set-up that i have

Full 3" turbo back exhaust consists of the DP, to a 45* bend and up and over the crossmember to the flex pipe, from there it flows into the QTP electric cut-out i put in. From there its basically a straight pipe all the way back to a 3" Megan muffler.

with the cut-out open it sounds awesome, super throaty and a little more quiet then an open downpipe.

When the cut out is closed the car is almost silent. The meagn muffler does a great job of muffeling the noise, however i wish it was a little more deep, and had some more sound to it.

i love the way its set-up, but it does have a couple flaws. For 1, its pretty low, since i ran it under axle. When my buddy welded it up, we were somewhat in a rush to get out of the shop, and i just wanted it on, so instead of throwing 2 extra bends in the exhaust and staying in that "stock tunnel" we went right under the gas tank and out the back. We bent the sheild up against the gas tank to deflect some of the heat. Other then that is perfect, and im very happy with it.

this is the 45 that bolts to the DP into the flex and cut-out section


And what it looks like on the car...i'll have to get some under-body shots, but you get the idea

Is a glasspack considered a resonator though?

Ok lets say for instance I go with an all out stainless steel header, stainless steel front exhaust pipe and cat back exhaust system with everything stainless steel except my original magnaflow exhaust. Will that change the exhaust note of my car becuase of my whole exhaust system being stainless steel, will it have a high decibal reading???

anybody want to reply do my post ^.

also are all aftermarket catalytic converters stainless steel???

oh griffgirl, speaking of decibals, I mentioned a while back ago about buying a decibal reader and measuring the loudness of our exhausts to see how loud they are? and then posting them up with different exhaust setups and so forth! but no one will do it

This post has been edited by BonzaiCelica: Jul 2, 2010 - 12:07 PM

http://www.3aracing.com/pdut_detail.asp?ID=129

i picked up that muffler from autozone one day because i needed a flesh pipe and saw that on the shelf for a decent price. like $50 i think in the store. figured i would give it a shot. i figured for the price it would sound like a pissed off bumble bee. to my amazement when they took it off the rack and started her up i heard a nice, clean, and deep tone. i've thought about removing some of the exhaust like the cat and running larger piping. but i'm on the hunt for a gt shell to start the 3sgte swap. toyota has under there but i really don't think i need to. that w/ a CAI i get better response and clean deep exhaust from low rpms all the way to 7k. will make a sound vid and post if anyone is interested.

This post has been edited by 94stONmotegis: Jul 13, 2010 - 9:01 PM

kinda interested in a dual pipe setup one each side any one done it and how was it done been trying to nut it out for a lil while now

Look up the user kaos.

Is he the only one who has done a dual exhaust?