Hi Hymee,

The underbody pic a couple of posts up looks a little low from the angle taken - I'm interested in the clearance ... particularly if and lowering goes on :)

Now that you've done you baseline dyno, are you going to do a with/without on your new exhaust?

cheers,

Kev.

L&L,

I have not posted a final price anywhere, so I can't understand what you mean when you say I should have lowered the price. Are you saying I'm not charging enough for the stainless steel system?

The facts are:
[list=a][*]The Mild Steel system is no dearer than I indicated originally, nor when I announced the change of design.[*]The Stainless Steel system is $150 cheaper than the upper limit of the price range I indicated on 2 previous occasions.[*]The new design consists of 1 less component - a $20 flange plate.[*]The new design weighs less. The stock intermediate pipe is 1.6mm SS, whereas the prototype was 2.0mm SS, and you can feel the difference. I have a junked prototype here (it split in the machine), and you can feel the difference just buy picking it up.[*]The retail price of the tips is considerable more than what the initial costing was. We have done our best to purchase these at a more attractive price.[/list=a]

Cheers,
Hymee.

Kev,

The question on ground clearance is a very good one, and I hope to provide an equally good answer.

The lowest point on the exhaust is just before the U-bolt bracket where it connects to the muffler. This is right at a bend in the pipe that angles upwards towards the muffler. This is apparent in the underbody photo I posted this evening. The standard intermediate pipe is still hanging on it's orginal bracket and rubber. It may look low in the photo, as the bottom of the new mufflers sit considerable higher than the stock one. Perhaps the orientation of the photo make it look more pronounced. Look how the buttom of the mufflers sit up almost inside the heat shields. And the boot does stay cooler!

Regarding dynoing, yes I plan on doing a MR Dyno run tonight, and I plan for a chassis dyno in the near future.

Cheers,
Hymee.

HYMEE

In your own words .(3 POSTS ABOVE THIS ONE UNLESS I HAVE GONE BLIND)

"Pricing has been finalised (HOORAY)"

Stainless steel system $750 + shipping

Mild steel /Aluminium system $450 + shipping.

The point that i am tryng to make is that the price for the mild steele system has stayed the same as u had previously posted at $ 450 , this price in my opinion should now be LESS than previously as you are now NOT replacing the" intermediat pipe "but are keeping this stock standard .

In your 1st design
you did not keep the "intermediatery pipe "but replaced it with a new one now in your new design you are Keeping the stock intermediate pipe however your pricing is the same?????????.

Your price for the stainless stell one has DROPPED by $ !00 FROM A PREVIOUS $ 850 TO A NOW $ 750 (no complaints here ) however your mild steele pricing has stayed the same as before WHY????.

michael

Michael,

I never published any finalised pricings previously, only estimates.

Since I have never published the price, how can you say it has changed? And why should I have to justify the cost? I have tried to get something good and affordable to help like minded enthusiasts out here. I'm not concerned if people choose to go to a muffler shop and take their chances.

Hymee.

Good news for those who like figures...

Until I get back on the Dyno, here are the on-road figures I obtained with the MR Dyno. Temps the same at 21-22 degrees. Same tank of fuel.

40 - 105 km/h, 2nd gear, average of 4 runs in opposite directions

Completely standard: 5.72 seconds.

New rear muffler assy: 5.53 seconds.

http://rx8.hymee.com/images/RX8MRDyn...reAndAfter.jpg

That is a controlled environment as I can get with my own equipment. I am keen to see if the Chassis Dyno tells the same story.

Cheers,
Hymee.

Hymee

No one doubts that you are working for the good of the RX8 and the enthuisiast rx8 forum members and no one begrudges you making a profit.

Ok i will conseed your pricing has not changed only your estimates of the pricing have .

I feel my questions were quite justifiable under the changed exhaust circumstances , considering that we are using part of the old exhaust for your new design .

Maybe i should not ask so many questions ???

As my modifications of the RX8 are not totally clear in what direction they may go in at this stage i will opt to keep my original exhaust for the time being.

If our mutual friend decides to tune my car and add extra tuning to it i may have the need for a different set up , to cope with extra heat in the system .(i certainly hope that this takes place our overseas friend is going to call him)

cheers
michael

Michael,

They should actualy end up being cheaper in the end, as the shipping should now be less.

Cheers,
Hymee.

Jax the car will be living in Sydney

ill post some pics when i get it

Ageo, nice photo mate. Well of the boat, and a seagull's head. The bottom of the image does not seem to come through. I've nothing against pictures of cars, or discussions about buying or selling, but try and keep the thread on topic ;)

Interesting that no one has commented on the MR Dyno results. Hopefully will be re-dynoing on Saturday. Fingers crossed :)

Cheers,
Hymee.

Sry bout that Hymee didnt mean to send that pic through.

Ageo,

No harm done. Don't worry about it!

Cheers,
Hymee.

Hymee,

132kW stock on the Dyno. Gotta be happy with that. I'm interested to see how the new exhaust goes. Nice results on the MR Dyno too. Looooove those tips!

Thanks Wildy.

I'm booked in tomorrow moring at the same dyno to get the "after" done on the revised cat back.

Next time you come to Brisbane, bring your intermediate pipe, and we'll see if we "update" your system to the released spec. Gratias of course!

It is hard to tell the difference between the sound of your stainless system, and the mild steel one. If anything, your one is slightly louder. But that is all pretty subjective.

Cheers,
Hymee.

Hymee you wouldnt happen to have a mpeg of your exhaust on how to it sounds would you? that would be mostly appreciated if you could post a link on here.

thanks

I'll see if I can make a decent recording with my laptop for y'all.

Thanks alot for that

Can you really feel the difference in power and is it noisy

without going on a dyno what does the car managmnent system have to say about the exhaust

The dyno showed 2kW. I couldn't sit here and say truthfully you could feel 2 kW. If I did, I would be lying, and worse, I would lose credibility.

We never though the catback would yeild much by itself. Couple with other improvements, it should all work together. Other improvments are just going to happen in good time, with appropriate r&d.

It sounds sportier. It is about as loud as you can legally go. Most V8's are probably a lot louder than legal. I reckon it is a little quiter than my SS was. Almost same as stock at idle, just a little burblier.

I did some sound recordings just now, and I'll post them soon.

Cheers,
Hymee.

Can you elaborate on what you are asking? I can plug into the ODBII and get readings if that is what you are asking. I get no MILs (Malfunction Indicator Lamps)

Cheers,
Hymee.

Got some sound recordings :)
 

Here are some MP3 files I recorded. I just used my laptop without any special microphone. So it is just whatever crappy one is in it, via a teeny little hole.


Start and Idle with a small throttle blip (521KB)

Short drive with windows down (738KB)

Start, bigger throttle blips, 1st gear drive by (917KB)

Best to "Save As..." them to your hard drive.

Raw recordings, converted to MP3 format. No editing done to tart them up.

They sounded crappy on the laptop speakers, pretty good on my Sony noise cancelling headset, but very good on the desktop's speaker system.

I need to work out a better drive by, with a better take off, and a better driveby point.

Enjoy!

Cheers,
Hymee.

Hymee,

No regrets at all now. I like it. To me, it is better than the current stock exhaust sound that I have!

After all it the feeling that comes with the sound that I like.

When I want an arse tearing car again I will buy another HSV!

Joe

very nice hymee thanks alot of for that.

if you have anymore or doing anymore i would be more than happier to save them and pass it around.

cheers

Hey Hymee, I'm interested in your exhaust system.

Can you drop us a line on spsealsolutions@bigpond.com to arrange all the admin.

Cheers mate, look forward to having a chat