First see this dyno and then hear the music here
(http://www.rx7.com/RPGReddyRX8exhaust/rx8midpipemufflerclips.html)

thank you

sounds like a fart can, we wanna hear the engine not farts

Originally posted by mental pimp
sounds like a fart can, we wanna hear the engine not farts
dude how does that sound like a fart can???have u ever owned any other rotary power cars besides the rx8???have u ever herd of Ari & Chris from rx7.com & there involvement in the rotary world??? that $hit sounds badd ass fellas,thats how a NA rotary supposed to sound like....i have no complaints about the parts i bought from Ari and crew at rotary performance over the years....there products are top notch & there custommer service is great....
My bad,you only 15 :)

umm, that sounded like a fart can on a civic, when i heard the sound of the borla , it didnt sound like that

the first one is ok but

the one that has the windows open sounds like a fart can at first ,then it sounds better

dont worry about it metal it will be awhile till you can EVEN drive

1 or 2 years........playa :cool:

Greek,

Sounds good. About how much louder is the exhaust versus stock when you are cruising at say 80MPH in 6th gear?

How much louder is it versus stock for full throtle acceleration?

Does it "drone" at any cruising RPM?

Also could you redo the graph above with the values "corrected"?

Thanks in advance,

-Mr. Wigggles

Mr. Wiggles, I am planning to order it so i have the same questions with you. If anyone has bought it pls send a report . Here in Greece we don't have ,untill now, problem with racing cat replacement so I'll go for it. RACING CATALYTIC CONVERTERS : http://www.hjs.com/hjs_englisch/index.htm

*spurt*

:D

I so need this exhaust, sounds tight to me.

Did the dyno have you at 178 with the stock exhaust? Isn't that extremely low. Also, I have never seen a 20whp gain from just an exhaust. That is quite a jump.

Sounds great though.

Some observations:

1. The graphs shown in the first picture have both the mid-pipe and the Greddy installed. That is why they say header back. It is not just the Greddy SP2

2. The mid-pipe by itself was completed over a month ago and that is when they actually did the stock dyno run:

http://www.rx7.com/pics/rx8midpipe_dyno.gif

This DYNORUN.004 shown in the graph is SAE corrected and has the horsepower at 183.1 peak.

3. The graph shown here of the complete header-back system:

http://www.rx7.com/RPGReddyRX8exhaust/images/rx8stockvsrpgreddy_dyno.gif

has the same .004 file but this time for some reason they show it uncorrected and the same curve only goes up to 178.4. Thus they decided to remove the 4.7 Horsepower for some reason.

I am guessing they are using this uncorrected curve from over a month or two ago to exaggerate the gains of the new complete system. Because it was probably much hotter at the dyno back then, the uncorrected is lower than the corrected. Now that it is cooler in Texas the uncorrected 200.1 they just got with the exhaust is probably close to being accurate but the 178.4 is not and should be 183.1. (or they should do a new stock run.)

They didn't do either.

The bottom line is they claim 21.7. Hp of gains, but unless they plot both curves corrected, the 178.4 should be 183.1 and the gains should probably only be 17.0 or less. (heck now that it is cooler outside, the uncorrected 200.1 might only be actually 195 or so and thus the gains are even less than 17.0)

If it was an honest mistake by Rotary Performance, I appologize in advance. But this is why people ask to see the actual dynorun files. It is very easy to distort them in your favor. I think they did it here whether they meant to or not.

-Mr. Wigggles

THAT IS CORRECT MrWigggls

OK, that makes more sense. I am often misled by thinking that plots on the same graph occurred the same day. 17whp from headers back is much more believable. However, I thought the car was generally pulling closer to 190whp stock. 183 is still low.

sounds very nice

*puts on his christmas wishlist*