seventhgear

would it be a good idea to put a single exhaust on an 87 n/a 7? 2.5 in. or 3in. ? i have availability to either
also i have a header i want it to go to a flowmaster square exhaust with a pipe all the way back ? please provide ur .02 please
thanks
jack

Gefunk

Hmmm....this is a new fresh idea. I would go ahead and try it none the less. I mean you really can't go wrong. Mine will be 2.5 or 3in all the way back when I bolt up my new Bonez RP and Corksport SS single. Personally I like the single look over the double look. Don't ask me why, I just never understood why Mazda went single, double single, with their generations. If you do decide to do this tell us what the results are.

titancronos

hurm, I personally like the look of the double...
but to each his own.
my .01

RylAssassin

I just posted **** on just this situation you are in Jack. I got an 88 N/A and im goin wit a single apexi gt exaust im ordering in a few weeks. Its sick its got a 3.75" diameter and its all stainless steal. The tip is 4.6" in diameter which will catch some attention ill let you know how it goes

tweaked

iTrader: (4)

I have a single 2.5 with RB headers and pre-silencer. the muffler is a Dynomax Stainless Ultra Flo.
The top end power is unbelievable! low end didn't suffer. but it is loud!!!. The reason it is so loud is because the guy that put it together for me didn't do it right. He set it up like those ricer *** holes where the muffler is hanging right out the back. I took a peice of pipe and duct taped it to the exhaust that was the same lenght that it would be if the guy had tucked the muffler under the car like he was supposed to. the Dbs dropped in half.
So, the moral of this story is to be sure to tell them you want the muffler tucked in and a tail pipe at least one foot long.
don't go with 3" you will loss too much low end and no top. it will only make it louder

pd_day

iTrader: (6)

Bigger != better
You want an exhaust that keeps exhaust gas velocity high in the low end and not restrictive in the high end.
If you are putting on a header, the opening diameter on the collector is around 2.5inch, there is no point in putting an exhaust that has a bigger diameter.

If you do, you are actually going to hurt performance with the gas velocity slowing down and condensing in the exhaust tubing

2.5inch would be the best bet.

seventhgear

ehanks alot guys i think im going to go with a 2,5 incher like i said thanks alot!!!

rico05

I got 2.5 inch. Good for backpressure which adds for torque. 3 inch is too big. I love my single!

Silkworm

I've got a 2.5 single exit on mine.. Fairly quiet at idle, but at full song.. it gets loud. We'll see, I may be to add a presilencer, especially for Laguna..

PaulC

Roy James

2.5 all the way from RB single header to free flow muffler... **** is LOOOUUDD.. but damn at the flames

Juan

iTrader: (28)

3" in exhaust pipes are too big for n/a. If you had a turbo then 3" would be good. 2.25" or 2.5" pipes would be better for your car.

superpimp35

i just ordered the c/s stainless single exhaust, i think a nice crooked single can looks so wicked......mabye cause im a jdm freak

aZizzo

bigger = ricier

seventhgear

what kinda muffler should i put on it ? i was thinkin a regular flowmaster but i want hi flow what is an example of hi flow? a bullet muffler that race cars use?bareley muffles n e sound at all tho ? jus a guess

aZizzo

I'm lookin to get the A'pex N1 catbacks, theyre a little expensive for some peoples' tastes though

seventhgear

but im going to a single stainless steel exhaust pipe with an attached muffler in the middle about 1ft or 2 after the header. what kinda muffler should i get when we are thinking HI-FLOW ?

von

anyone have a freakin header or pre-silencer I can buy off them???

GLHS

Dynomax makes very good round mufflers. I have had mine on the car for over 1 year now, it handles all the flames I can put out of it. It ran me $110.

I just got a 3" exhaust for the T2 with a 3" " bullet" muffler, and SS 3" tip for $145 installed.

Let me know, if you need a deal like this.

bcty

Rb headers w/straight pipe to my N1... its sweeeet and a little loud

Rotorific

iTrader: (1)

seventhgear you will be sorry if you put on a flowmaster they do not sound good....you are better off with an import tuned exhaust....apexi is a great exhaust ive got a DUNK right now its awesome and do not go over 2.5 that isnt the limit but you are loosing more backpressure the higher you go and you still need some with an NA....

FPrep2ndGenRX7

Order from this company. Best price's I've seen anywhere on Magnaflow.

http://www.bk-exhaust.com/

Rotary Racer

I have the new style Racing Beat cat back exhaust. I love the sound of it but good god is it heavy. I am going to switch to a single just for the weight reduction. At first I was against the single but it is better than weighing the car down

Falcoms

Okay, now the question becomes who makes headers that collect at 2.5" or 3"? I know that the RB header collects at 2", which to me is just too damn small for a rotary.

Torch101

i'm not a fan of duals myself and was wondering if there was an exhaust similiar to the racing beat (low sound/good performance) except single.

rx7ofdoom

I was recently looking and the a'pex systems are pretty cheap on ebay.