I know this thread has come up before and everyone made fun of the HKSA exhaust on ebay but I have seen both in person and they are exactly the same unit. The sound the same and each one has all the exact markings. HKSA $250 with silencer vs. Rx7.com $439 + $40 for the silencer. Here is a link to the ebay one. I am not saying this is the best exhaust etc., I am just letting everyone know if you are going to buy the Rx7.com one save yourself some money.


http://cgi.ebay.com/ebaymotors/ws/eB...tem=1871618080

 

if its all you can afford then go for it. i guess it all depends on your budget.

 

You are right, 2 friends of mine or on a spening budget from their wives each one bought one of them and they came in the same day and we installed them. needless to say the guy who bought the more expensive one is a little upset.

 

haha your mate would be burning!! money for nothing.

With that exhaust, whats it matter. there are no major bends, no cat, just pipe, no "special" engineering can make that flow any better..

 

To bad they will be bad in about a year.. They are packed with fiberglass wool.. Which will melt very quickly...


Hell My glass packs i put on one of my old 1st gen RX-7s only lasted ~5 months..



-Zach

 

So they seriously sound the same? What are mufflers from Japanese companys packed with? Anything at all?

 

I already said they are packed with fiberglass wool...


So they will sound a little different.. and only last ~1 year...



-Zach

 

so you are saying you can assure me that they are packed with fiberglass wool? I know if I spent $500 from rx7.com on an exhaust and it only last a year I would be pissed. could it be that it just might be a good deal on ebay.

Again, I am not saying it is the best thing since sliced bread, but I have seen it, heard it and fit and finish is good. could it just be that there is a cheaper alternitive in the RX-7 world that might be a decent product. Some of you guys act like you are driving $100,000 cars and everything has to be expensive to be good. I love the Rx-7 just as much as any of you, but we are not driving new 911 turbos and not everyone wants to spend $1200 on a titanium exhaust that they will want to replace in 2 years when something better comes out.

also condsidering that myself and my friends only drive our cars 1500-2000 miles a year I think it will last alot longer than a year.

 

Well, according to the EBAY add:

CAR : Mazda RX7 93-95 Twin Turbo

Pipe Material : SUS-304 STAINLESS STEEL, FULL 3.0" Diameter

Muffler Material : SUS-304 Stainless Steel with Perforated Core and Fiberglass Wool

Muffler Tip Size : 4.5" Straight Cut Tip

H-Pipe Material : SUS-304 Stainless Steel

Bends : MANDREL BENDS Only

Welding : ROBOTIC TIG-WELDING

Made in : USA


YES it is fiberglass....



-Zach

 

I am not trying to talk the exhaust down.. but i am trying to inform people before they buy it... It is a less expensive product, because it is made less expensive..


If you really want a new muffler for cheap, buy an Apexi N1 universal for ~200 and have it welded on... It will cost ~$40 for most exhaust shops to do it for you...



-Zach

 

So what... when the wool melts it will just change the sound... thats it right? no biggie. -silencer

 

FWIW I have been running a Brullen straight through for a few years. It has fiberglass packing and hasn't burned out yet.

 

Sounds good

 

Well, i have run glass packs and they only last ~6 months to a year... I am not trying to talk down on the product.. hell i would probably get it.. just trying to let people know so they are not suprised..


-Zach

 

The HKSA exhaust is the same one as the Rx7.com one. I have the exhaust along with the midpipe. Excellent fit and finish. But hey if you want to spend $200 more on the exhaust go for it, but you will be pissed off. Trust me.

R.K.

 

I want to buy that cheap one.. but its not on ebay anymore.. anyone know where I can get it at for that price? thanks.

 

I know where to get it. I will pm you with the email address.

 

Just email the Seller on ebay. He should have more.

 

Just pm you.

 

how loud is this exhaust?

 

Well I have no cats in my exhaust so when the wastegate opens, the guy next to you will sure know. Its seems a little louder than my buddies HKS but then he still has his main cat. Hopefully this helps.

R.K.

 

uh,...im a total newbie here.. please forgive me for what i am about to ask.. but.. whats the purpose of a waste gate.. and what does it sound like?

 

It diverts the exhaust gases to the secondary turbo. The faster it opens the bigger the boost spike is. When you port the waste gate you make the hole bigger therefore lessening the boost spike/boost creep.

 

haha, so you think hks or greddy or apexi doesn't use fiberglass wool?

 

In some exhaust things they do.. But usually in there exhaust components for RX-7s they use stainless Steel wool...


Rotary exhaust temps are MUCH higher then a piston engine.