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Originally Posted by RIP IT!
(Post 4020512)
There is an option of a standalone piggybacking the stock computer. Or are you only looking for a reflash? If so I doubt you'll see a product for a very long time if ever on a reflash. For reasons stated earlier in this thread.
Fairly complex injector management, several intake "valves", inter-connected OMP values, drive by wire and a pretty sensitive MAF system get in the way of a good tune. That's basically why the accessPORT is so successful and why most modern cars run like crap with the aforementioned pcm options. Multi-dimensional tuning on those pcms is like multi-tasking on a commodore 64! |
I am not a fan of micro tech, even though I am working with one on a car. In my statement I never said to replace the stock ecu. The stock ECU is a very nice computer but it does lack a couple of items for major increases in stock power IMO.
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Do you have an idea as to what you might look towards for a PB for the S2 ecu assuming by your previous comment that you wouldn't prefer using microtech?
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Originally Posted by RIP IT!
(Post 4022298)
I am not a fan of micro tech, even though I am working with one on a car. In my statement I never said to replace the stock ecu. The stock ECU is a very nice computer but it does lack a couple of items for major increases in stock power IMO.
If we're talking about boosted applications then i can guess a baro\mass airflow kind of interpolation, right? |
Originally Posted by RIP IT!
(Post 4022298)
The stock ECU is a very nice computer but it does lack a couple of items for major increases in stock power IMO.
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FYI, I will have to double check, but in all the stuff I have been doing recently with the OBD2 port I dont remember pin 13 being populated ... which may be why the AP doesn't work all too well with the S2 ( I assume p13 is what the AP uses to flash) ... but I wasn't actively looking or paying attention to that pin in the past so I cant say I am 100% certain.
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Pin 13 doesn't seem to be connected on my AP cable. A quick search shows that a true J2534 passthrough device should be able to use pin 6, 9, 11, 12, 13, 14 or aux for flash programming and that it must be software selectable.
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interesting, thanks for checking.
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Cobb can probably easily mod the AP to work with the S2. The Mazdaspeed 3, 6 use the same processor as the S2 (SH7058) and they work with those.
They also need the figure out the challenge/response pairs for reflash, this can be done by dumping the rom using methods other than J2534 (they are stored in the rom), or simply brute-force cracking -- it actually doesn't take that long. After that, however, you need to reverse engineer the rom. Though I suspect it is similar to the S1 rom, nobody but Piasani has even bothered to check AFAIK. |
Im using the power mod, seems to be working pretty good till around 4500 then hits a wall. Ive gotta get the 8 through emisions so I need to back track and remove the belt from the SC. Im going to swap out the injectors after the inspection to see if that works. From the logs on the piggyback it looks like some kinda fuel cut.
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I have sent the following groups an email for some information regarding their support for rotary engines (mainly the 09+ 8's)
aem microtech haltech |
Originally Posted by paimon.soror
(Post 4022304)
Do you have an idea as to what you might look towards for a PB for the S2 ecu assuming by your previous comment that you wouldn't prefer using microtech?
Originally Posted by bse50
(Post 4022346)
What would they be?
If we're talking about boosted applications then i can guess a baro\mass airflow kind of interpolation, right?
Originally Posted by MazdaManiac
(Post 4022399)
Like what?
Originally Posted by paimon.soror
(Post 4023578)
I have sent the following groups an email for some information regarding their support for rotary engines (mainly the 09+ 8's)
aem microtech haltech |
Originally Posted by RIP IT!
(Post 4023607)
There are no parameters for Boost control and the fuel corrections associated with them.
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so the ECU can control the wastegate then?
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Originally Posted by RIP IT!
(Post 4023607)
I am a Haltech dealer. What information would you like? I'll get as much as you wish.
Really would like to know the basic stuff right now. With the lack of cobb support it would be nice to know how much effort would be required to get a haltech interfacing with an s2. |
Originally Posted by RIP IT!
(Post 4023668)
so the ECU can control the wastegate then?
That said, I'm not a big fan of the way Mazda and Subaru implements boost control in the PCM. It is much easier to just use an external boost controller. But that is me. |
Originally Posted by paimon.soror
(Post 4023676)
Forgive my ignorance but ease of interfacing with oem ecu? value for a stock s2 (no power mods on my car atm). Cost? Experience with S2 ecu?
Really would like to know the basic stuff right now. With the lack of cobb support it would be nice to know how much effort would be required to get a haltech interfacing with an s2. Sending PM |
Originally Posted by MazdaManiac
(Post 4023696)
Not by design, though.
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Great discussion in this thread. I hope that this becomes the gathering point/inspiration for those that want, and those that can offer tuning options.
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Hello Paimon, Thanks for your interest in Haltech Engine Management Systems for your RX8 project. I’m happy to inform you that we do support the Renesis Trigger pattern, and have run several RX8’s in both race and street applications using either our budget oriented Sprint RE ECU, (MSRP $1,042 including Harness ) as well as our mid level Platinum Sport 1000, (MSRP $1,756 including Harness) While we do not produce a Plug in Patch loom or Parallel loom kit for the RX8, you will need to wire in either ECU to your existing wiring harness, but we can provide diagrams and base maps to make this installation much simpler. Once installed, either Sprint or Sport ECU will offer you FULL control of Fuel Injectors as well as Leading and Trailing spark advance curves in real time tuning via our ECU Manager software package. This software is free to download at this link: http://files.haltech.com/downloads/p..._2_release.zip In addition to Spark and Fuel control, both ECU’s over configurable outputs (2 on the Sprint, up to 6 on the Sport) as well as PC based datalogging. The Sport ECU also offers internal datalogging, 32x32 maps (vs the Sprints 16x16) dual mapping, as well as additional user configurable inputs and outputs for driving devices such as Fans, Nitrous, Boost control, Water/Meth injection, Launch control, Antilag, and a host of additional features. More information on the Sprint RE ECU can be found here: http://www.haltech.com.au/index.php/...-sprint-500-re More information on the Sport ECU can be found here: http://www.haltech.com.au/index.php/...num-sport-1000 If you have any other questions please don’t hesitate to ask! Thanks, Eric Gash Manager: Haltech USA Haltech Engine Management Systems Email: eric@Haltech.com Web: www.haltech.com Phone: 760 598 1941 Fax: 760 598 1987 Email from Haltech support |
If anyone hasn't seen it, this paper is a nice overview of security issues in CAN and other embedded systems, with a nod to chiptuners.
http://www.autosec.org/pubs/cars-oakland2010.pdf |
Paimon, Unfortunately we do not have a plug-and-play solution for your vehicle. Would this be for forced-induction applications or for naturally aspirated engines? You may be able to use an AEM F/IC-6 unit on this vehicle for a forced induction application, but we do not have any data on this setup so I cannot guarantee how well it work, due to the sequential injection system of that engine. Beau Brown Technical Support AEM Performance Electronics (310) 484-2322 x251 |
Paimon, if your interested in a Haltech, hit up Chris Ludwig at http://www.lms-efi.com/.
Great prices and very knowledgeable. Email him for any questions about running a Haltech on an RX-8. I think some guys were doing a Sprint RE as a "piggyback" that way the factory instrument cluster still worked and you keep the drive by wire system. Chris will know for sure. If I ever decide to upgrade my Haltech E6K on my RX-7 to a newer Sprint RE or PS1000 I'll be buying from him. |
Sounds good, thanks for the tips, and fyi I spoke a bit off thread with RIP IT (rotary inspired performance) and they are very very knowledgable as well. They are working on possible vendors or custom in house creation of a patch loom to interface with the S2 ecu which will be fracking amazing.
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http://www.lms-efi.com/ can make custom patch harnesses as well. Just how much you want to pay.
I'm cheap so would just do splice install! LOL! |
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