With as much experimentation that has taken place in this community, I'm surprised there hasn't been a good catback exhaust comparison. If there has been, please point me to it!

It would be so easy. Put an RX-7 on the dyno, preferably with a downpipe and midpipe (otherwise the stock precat or cat could skew the results), and try 5-10 of the more popular exhuasts. Not 5 of the same style, but *different* styles. N1 canister type, RB dual tip, ATR, Greddy SP, PFS, etc.

I'd like to know the difference in weight of each of these, but more importantly (read: harder to determine) the difference in flow. I think the RB is one of the quietest but I want to know if it will hurt performance vs my existing setup.

Will someone please do this if it hasn't been done already? These cars have been around 10 years and I'm not aware of any such test.

Wade

 

A while back, Jason posted that he was going to do that, but I haven't seen anything on it yet. I think the whole community would be interested in those numbers.

 

I have the resources to do it, but have not found the time. I will take a saturday one of these days and do that.

Jason

 

If Jason is gonna take the time to do this, I suggest we members pony up a few bucks each to make it worth his while....

 

Dont worry about the money, just let me know which catbacks you want tested

Jason

 

racing beat, hks hiper, apexi n1, jic titanium,

 

...Greddy SP...

 

Apex N1 dual, Greddy SP, Greddy titanium, a host of HKS. oh, apexi GT too, please.

POM HB

 

Apex N1 dual, Greddy SP, Greddy titanium, a host of HKS. oh, apexi GT too, please.

POM HB

 

yeah that would be great, just the other day my friend was researching CB's on his wrx and found a great site that compared hp, tq, db @ different rpms, cost, weight, and sizes (tip and piping) for about 8 popular cb's, not that all of that has to be included, just suggestions

 

RSR exmag..... the sleeper looking one please

 

blitz nur spec

thanks

 

Add the HKS carbon TI. Also would it be to much trouble to have sound clips along with the differant CB's? We could read the performance data and then click the audio file to hear all the action. That would be the f*cking ****. It would also make this the Ulitimate sound/exhaust thread. Sticky anyone?

 

hey guys forget the m2 performance cb.

 

the old school hks dragger, not the dragger2

 

thanks Jason

 

I would suggest the Petit/Borla, but I am happy with mine and don't see myself changing. It is one of the better sounding ones, and Borla is underestimated for their products.

 

"Dont worry about the money, just let me know which catbacks you want tested"

Thank you, Jason!

Now, we know 'where' we should buy stuff from!

POM HB

 

Jason,

I suggest the pool of exhausts be fairly different, but include AT LEAST one Greddy with a decent sized muffler (SP or Power Extreme), the RB dual tip (the one a lot of us are curious about), and an N1 canister-style exhaust. Most other exhausts closely match one of these 3 styles. Be sure to test a stock catback too!! If you can throw more styles in after these, great, the more the better.

There is no point in comparing several exhausts that are basically the same by design (for example, all the tiny canister style exhuasts) since their performance will all be VERY similar.

Wade

 

Thanks Jason.....that's a huge service to the FD community.

Sounds like it would make a great article for the upcoming RX-7 magazine.

 

id like to see the RSR GT2 (the one with the straight through pipe) tested as well as the aboves.

 

I would like the Greddy PE to be included rather than the SP



thnx Jason

 

that would be very informative and as someone said, good for a magazine article...

to start i believe:
dual n1 > rb dual > stock > dual n1 silenced

BTW: my n1s is for sale. too freaking loud with midpipe

 

I think this would be an excellent idea for the RX Tuner Magazine. I have a feeling they have already had this idea (I hope). A db comparison would be really nice too. I have seen tests like this already, in the Japanese RX-7 Magazine.

 

Yeah db is as important to me has HP, preferably I'd like to buy one that ranks in the middle of db, with as much hp gain as possible...