For what its worth i spoke to a local rotary guru and he said that a rotary can loose up to 30% on the dyno test especially when engine has not been run in .

Most of the treads i have read from you guys indicates that you expect a loss of 17% WHATS CORRECT ???
If there is a problem we should collectivelly ask for answers ,if there is no reply or inadequate information from maz da, then we should collectively go to the MEDIA and bring this matter to a head.

The last thing mazda needs to be known for is of a company that does not deliver what it advertises .

Writte to them and give them 14 days to reply if not go to the media .

A class action legal suit is the last thing any manufacturer wants, surely there must be some legal eagles amongst us .

Peculidor - the 20,000 mile thing WAS NOT in the RX-7 owner's manual. It was in the shop manual, and only in passing/with digging.

The owner's manual is what comes in the glovebox of a new car. The shop manual is the big book that shows how to do pretty much every repair and service to a car. The RX-8 shop manual is not available at this time, as far as I know - I've tried to get my hands on one :).

Dale

If you'll recall, all US import cars were held up at port to fix an emission problem. For whatever reason the car as shipped from Japan did not meet emission requirements and they had to reprogram them at port in order to pass.

As pure speculation it's possible the software revision to pass emissions reduced HP as well.
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Los angeles dispentries

That's quite possible. A lot of the first shipment RSX's had their ECUs remapped at port.

Regardless of what the reason for the low numbers are, Mazda should step in soon and make some kind of statement, even if to say that they will investigate the issue. We're all speculating here and nobody knows anything except the low whp numbers.

If Mazda did that without disclosure they deserve to be sued.

I would be surprised.

More possible is that the ECU's where flashed with the wrong software by accident.

This can happen, a certain brake system supplier sent out nearly 1,000 ABS ECU's falshed with code for a completely different car. Sometimes even the best quality control can fail.

But again...it's all speculation.

just to add to the speculation:

Could it also be possible that if they did have to be reset at the port, they had accidentally put the program for the automatics on all the cars? The numbers tend to be closer to what we'd guess how the automatics would perform. I could easily imagine techs in a hurry trying to get through a few thousand cars to get them to the trucks on time. So they have the base map on their system and just run through them one after another without compensating each car's setup.

Guess I'm just kind of wondering 'out loud'.

nope. the automatic ECU wouldn't have the capacity to actuate the tertiary valves that the hi-po motors have (which we can plainly see open on the torque and power graphs), and would govern the engine to a 7200 rpm rev limit.

I would hope those with hard data go to Mazda and ask..

Because I dont think we'd get the same effect, for people like us who dont have dyno numbers or such to go to them with "Oh, I know guys who ran their cars on a dyno and..."

ANSWERS.. we want ANSWERS.. maybe we all can't handle the truth... :(

Just spoke to my dealer about this (by the way my car is still not in and I was told July week 5 by two different sources - probably next week). He had not heard anything about the dyno results yet and he told me that the Mazda people had been adamant during their training that the car was going to be a true 247hp (after the Mazda fiasco).

He will check with the Mazda reps ASAP.

I think its VERY possible they had something to do with the ports, I remember rx8 shipment was being held up at the ports due to some reason, emissions most likely. Also how can the Renesis be the BEST ENGINE of the YEAR if it doesnt perform the way it should.

I suggest we find out what allocation and when these people received their rx-8s that are getting low power results on the dyno, from there we can narrow it down to a possible flaw with early production models.

SHUSH!

Yes, maybe all us 2nd allocation folks and beyond will be fine - wouldn't that be funny ;).

I don't recall that at all. I remember our cars sitting at the docks being inspected is that what you mean?

Vince

What's the chance of the US cars being remapped to the UK lower power spec? for some reason.
Come on Mazda, at least let us know that you are looking into it!

no, remember, my friend's cousin's brother's roomate heard from this guy he know who knows a guy at the port that they rebuilt the entire car in the port, because of an emission problem ;)

i dunno man... if he's your cousin's brother, and not your cousin also, i wouldn't trust him farther than i can throw him... and even though i might be able to throw him pretty far, i still wouldn't trust him that much... now, if you were talking your cousin's neice's boyfriend's roommate's mechanic's "some guy" who heard something, THAT would be a way totally different story...

No way...
 

No way it was an emmissions problem....I'm still holding on to the 'wrong dipstick' theory......
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doc

I think the only dipstick I'm going to trust is my own. And sometimes it has a mind of it's own...

Vince

ok i heard this from a meachanic
 

he said that when u do a dyno u want the closest 1. ratio for the gear i was just looking in the rx8 book and it says that thst gear is 5th maybe we r supposed to do pulls on the dyno in 5th.


for example 3rd gear 1.645
now for 4th gear 1.187
now for 5th gear 1.000 now isnt this gear u r supoosed to do the dyno.

no i will repaet my self i just passing on info here so dont kill the messenger.

and one more thing dont flame me about spelling i broke my glasses and im leagaly blind in my right eye so i cant see anything

you're right eclipse0, but dynos can compensate for that, but yes, 5th gear is the 1.000... i don't think that's the problem.

Then it's STILL way too low!!!

Interesting to compare to the dyno chart of this 220HP (rated)Mazda6 s 5sp MT

http://images.cardomain.com/member_i...818_8_full.jpg

Re: ok i heard this from a meachanic
 

The very first post says he also did a 4th and 5th gear run and they showed 1% less HP than 3rd gear (about 176 I expect).

Thats my 6 dyno, which looks at little overstated in HP but underrated in torque since the 15% rule would say my car makes about 202lb TQ when its rated at 192 at the crank. I'm going to dyno again soon with the AEM CAI once it comes out. get a better feel for what happens after break in

I put data on the first post on a 1994 stock RX-7 from the same dyno for a data point.

Vince