Series II ECU Tuning
07-03-2011, 12:17 PM
#201
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!
07-05-2011, 09:52 AM
#202
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.
07-05-2011, 10:55 AM
#204
If we're talking about boosted applications then i can guess a baro\mass airflow kind of interpolation, right?
07-05-2011, 12:12 PM
#206
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.
07-05-2011, 01:01 PM
#207
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.
07-05-2011, 01:10 PM
#209
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.
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.
07-06-2011, 01:32 PM
#210
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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.
07-06-2011, 02:00 PM
#212
There are no parameters for Boost control and the fuel corrections associated with them.
I am a Haltech dealer. What information would you like? I'll get as much as you wish.
07-06-2011, 02:42 PM
#215
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.
07-06-2011, 02:57 PM
#216
If you use one of the existing outputs in a creative way, of course. Not by design, though.
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.
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.
07-06-2011, 03:01 PM
#217
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.
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
07-07-2011, 06:35 AM
#220
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
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
07-07-2011, 09:30 AM
#221
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
http://www.autosec.org/pubs/cars-oakland2010.pdf
07-08-2011, 06:25 AM
#222
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
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
07-08-2011, 09:18 AM
#223
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.
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.
Last edited by jrx13; 07-08-2011 at 09:22 AM.
07-08-2011, 09:28 AM
#224
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.
07-08-2011, 09:35 AM
#225
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!
I'm cheap so would just do splice install! LOL!