i miss the old twin turbo setup for the rx7

 

+20Whp per psi is very common on the S2000. especially when a equal length turbo manifold is used.

SO 400whp @10psi is attainable with the OEM header is still in place and a upgraded exhaust is used with the Rotrex

 

3 years and 1 less rx8 and still nothing. maybe when i lease another rx8 in 2010 their will be some progress.

 

And almost two months since RP has made a post to this thread.

 

Happy Thanksgiving, everyone !

 

*unsubscribe*

 

Axial Flow Supercharger...R.I.P.

 

fixed

 

Shoo..... My car is not even out from under warrenty yet... I for one am still 'in'.

 

My car just ran out. I would have done this while it was still in warranty, but now I am waiting to see if a new Mazda is coming out or I may have to move to Cayman S. I have been buying Mazdas for over 20 years, but I am liking the new Porsches.

 

Ah I think the Axial Flow is waiting on the COBB AccessPort, so that is why its quiet. The COBB seems really close to releasing it for the NA RX-8 MTs.

However, it would be nice if RP teamed up with Pettit as they have an ECU flash for their SC kit.

Yeah Pettit is a supercharger competitor, but they have an ECU flash, and if the Axial Flow is going to be released there is nothing they can do to stop IT. So it makes sense to team up. Like the way Mazsport hooked Pettit kits up with the Int-X, until they got their ECU flash finished.

 

Don't hold your breath. Ain't gona hapen. The only sure thing is Cobb releasing on their own.

 

True Phil--besides the flash would not work with the axial flow--boost parameters are different. It would be nice though if it would.
oscd

 

Huh? "Boost parameters"? What is that?
Air is air. If the flash will only work with one form of FI, then there is something wrong with it.

 

what happened to the AF supercharger? ever since SSX seems like nothing happened?

 

Turbo boost is diff than supercharger boost.

i figured the master would know that

duh


haha.

maybe he is saying that the flash is tuned for only a certain psi.
either way a flash is a flash.

 

Pettit = Supercharger
Axial Flow 'Supercharger' = ...



As far as the engine is concerned FI is FI, how it gets there matters little at that point.

 

Hmm - PSI from a turbo-supercharger is different from an axial-supercharger is different from a screw-supercharger???

I'll ask this... What does the ECU know about the "boost" (i.e. manifold pressure?). Think about that one.

Cheers,
Hymee.

 

Oh yeah, I forgot!

Supercharger boost is made with the tears of Ugandan children.

 

^^^

 

I agree that many on this forum know more than I do about FI.
So if someone has a flash for our oem ecm that will run a s.c. well, then that flash will work on all types of FI? Or all type of superchargers not tubo's?
Axial flow is a little different ype of s.c. also---correct?
Is Petit sitting on a goldmine and doesnt know it?
olddumbassdragger

 

air is air. all the pcm needs to know is what to do with the air it gets

 

HYMEE!!! Where the hell you been for the last few months? How's the kit coming?

 

so the Pettit ecm flash for its twinscrew s.c will work well for all rx8 FI installations? or all rx8 S.C. installations?
oscd

 

Well, probably not.
The issue is going to be one you know well - the idle bleed.
A well designed FI system will have all the air that enters the system accounted for utilizing whatever measurement technique that is employed. In the case of the OEM setup, this is the MAF.
Some systems will use a MAP sensor in lieu of the MAF or in conjunction with it.

One of the problems with the Pettit system (and subsequently, the Pettit flash) is that there is a deliberate "leak" to allow the S/C to pass air for idle that the MAF doesn't see. The flash, knowing that this is the case, adds back to the calculation the amount of missing air.

A normal FI installation won't have this "leak", so the flash will over-fuel because it believes there is some 40% more air going by that there actually is.