FC_fan

iTrader: (2)

stock system fell off, I daily a stock 86 na, threw on a racing beat street header>rb presilencer (with 5th/6th port tube) I got for free a while back> custom crush bent 2.5" pipe> $25 thrush turbo series muffler 2.5" in/out. offset in, center out. I think its the cheap muffler but my car sounds like angry bees in a tin can when I get on it and I regret cheaping out but I needed the car for work.

yes, I have read thru about a million exhaust threads but had some specific questions I just need answers to.

1. I have the "steel braided" interior of the muffler, not straight threw design. would a straight threw sound better?

2. would having a smaller or bigger out on the muffler make a difference?

3. what muffler would sound decent (not honda ricer sound) and maybe lower the decibals a little at WOT? I'm looking for something sub $90 ( I know, severely limiting). I know a single is going to be louder then duals but duals aren't in the budget.

4. would placing a muffler in line somewhere make it sound better then at the end of the system?

thanks for any advice, flamers keep out. you don't want to contribute then don't say anything. I know this is an overly discussed topic. just want answers and helpful opinions. thinking of going with a magnaflow but which one is the question. I'm embarrassed to even accelerate anymore right now.

FC_fan

iTrader: (2)

anyone? recommend a good magnaflow for me?

coxxoc

iTrader: (3)

I'm using Borla XR-1 where you have the pre-silencer and Apexi N1 mufflers on the catback section. The XR-1 gives it a low throaty tone and can stand up to the heat from these engines. You can get them from Summit or Jegs for $150 or less.

wjk0817

iTrader: (3)

I was thinking if I f ed up my exhaust, I was gonna go with the dophin tail, (re a ) looking custom exhaust like he one mac has.

FC_fan

iTrader: (2)

so you're running dual n1'S? I'm thinking most of my problem is because its a single exit. it sounds ok up until half throttle but after that its just annoying. maybe worse then a honda sound. maybe that borla inline somewhere AND my presilencer would help? 150 is steep for me since this wasn't planned and I'm not rich.

I know some people are happy with magnaflows and they are cheaper, anyone have experience? someone told me an edelbrock RPM muffler would be good as well. I'm thinking that most of my problem is because I don't have a straight threw design on this muffler, it 180's twice. thanks for the advice guys.

sharingan 19

iTrader: (16)

My friend has a magnaflow oval muffler (straight through design, similar to the borla xr-1) on his n/a supra it is the only suppressor in the system (headers to 2.5" straight pipe). It sounds awesome, nice and deep and not a hint of rasp.

That being said, I run a borla xr-1 as a pre silencer---> rb duals and it sounds almost stock at idle. If your gonna use the new muffler as a pre silencer then I say suck it up and get a borla. If you are going to swap the muffler at the end of the system a magnaflow should be fine.

FC_fan

iTrader: (2)

ya, I'm leaning towards changing the muffler at the end with a magnaflow straight threw and see what happens. the thrush isn't bad below half throttle and cruising around but go past that and it just has an embarrassing I-don't-know-what-the-hell-I'm-doing-to-my-car sound to it. given the fact it has a smashed then hammered straighter front fender with yellow paint from a wall tap, my clear is peeling and is sun faded all over the hood and roof, and random patches of bondo/black primer on a red car, I really don't need anymore help with people thinking my car is retarded.lol.


Is there any benefit of putting the muffler inline as a presilencer and then just running pipes all the way back or should I run a muffler at the end in addition to say a borla xr-1? if the magnaflow doesn't work then I'm just going to save for the rb duals and have a full rb system even though I can't really justify that system until tax refund time :/

Big88chevy

iTrader: (5)

i ran custom 3.5 piping with a 3.5 straight through Magnaflow race series muffler and an xr-1 as a resonator and it sounded amazing. unlike other mufflers the sound actually became better as the rpms rose. kind of expensive but def worth it, i wouldnt go 3.5 with ur setup tho

FC_fan

iTrader: (2)

^ya, I'm na so I went 2.5" since thats what my presilencer was. I have the rb presilencer right after my header but everyone seems to be going with those xr-1's as presilencers. maybe I should swap out? then I wouldn't have my split air tube for my 5th/6th ports though and I don't feel like doing the rpm switch mod.lol. I THINK as long as I get something straight threw without 180's inside, it should do the trick. thanks for the help. I can't seem to find people running anrb header with the rb presilencer as well. everyone is with those xr-1's.

what does everyone think about this one? specifically states it tries to get rid of unwanted resonance and harshness. thats a step in the right direction.lol
http://www.magnaflow.com/02product/s...e=main&id=9292

sharingan 19

iTrader: (16)

Just keep the rb pre silencer and get a quality muffler.
I have no experience w/the muffler in the link, a straight through design would be preferable but at least its a magnaflow.Funny how being cheap usually ends up being more expensive...

Big88chevy

iTrader: (5)

def go straight through, it helps with heat dissipation and thats what kills most of the cheap mufflers. plus, if ur not worried about sound, its got better flow. Like sharingan said, just spend the money and do it right the first time it will save u money in the end.

FC_fan

iTrader: (2)

crap, I thought that was straight threw. I'll look some more. ya, me being cheap is costing me more right now, I hear ya.

what size oval should I get?

edit: well the ovals say they have fiber fill as well so thats out right?

what about this?
http://www.magnaflow.com/02product/s...e=main&id=9324

FC_fan

iTrader: (2)

or would this one work? I don't know about that "fiber fill" stuff.
http://www.magnaflow.com/02product/s...e=main&id=9248

are those universals usable in our cars? will the fiber fill just melt and rattle around or what?

misterstyx69

iTrader: (142)

why not this?: http://www.racingbeat.com/RX7-1986-1...nts/16435.html

FC_fan

iTrader: (2)

^because that is 3" and my system is an na 2.5".

I read threw some 1st gen threads that had 13b's and magnaflows. I'm gonna try that universal offset/center one. I guess I'll just get the 4"x9" oval. its in the middle of sizes and I have no idea. should I get a 5"x11" oval? I'll be ordering tomorrow evening.

misterstyx69

iTrader: (142)

they make a 2.5 also.

FC_fan

iTrader: (2)

I'm thinking that is the same thing I already have except I have the bolt on one.http://www.racingbeat.com/RX7-1986-1...nts/16405.html

Soooooo, if you are recommending that then I'm on the right track thinking its my muffler. $25 steel braided 180 degree muffler does not work in an na application. I saw a turbo guy put a thrush inline on his but I think it was the welded series which is a chambered muffler. he liked it.

I did notice now that racing beat offers a universal muffler for a reasonable price. they must be as good as the regular power pulse mufflers I would think. hmmm, decisions.

Big88chevy

iTrader: (5)

u will burn out a thrush, cherry bomb, universal, etc.. and then it will smell and sound terrible. u drive a rotary therefore have no choice but to spend money lol.

FC_fan

iTrader: (2)

^well as long as its full 100% stainless steel construction and straight threw, it should last at the end of my system. I have talked to some people about the magnaflow today and a few have been running their universal ovals for more then 2 years and in one case 5 years. they said it still sounds great and no louder or different then when they bought it. rotary's with high flow cats or presilencers in place and the muffler at the end of the system. I'm gonna try it and then if it ***** out I will have to get a loan and the rb duals. lol

magnaflows info on the universal oval Features and Benefits: THE WIDE OPEN PERFORMANCE DIFFERENCE! MagnaFlow Performance mufflers are 100% stainless steel and lap-joint welded for solid construction and rugged reliability even in the most extreme conditions. They feature a free-flowing, straight-through perforated stainless steel core, stainless mesh wrap and acoustical fiber fill to deliver that smooth, deep tone. Mufflers are packed tight with this acoustical material unlike some others' products to ensure long life and no sound degradation over time. Backed by a Lifetime Warranty. To learn more about how Magnaflow's mufflers deliver the most in power and performance click HERE.