Hey guys just wanted to know what computers you all are useing with your 20bs. Im going to order one soon but wanted to see what others used. Also who tuned them for you? I was thinking about going with a haltech and plan on starting out with about 500 hp.

 

I'm using a motec m8 with zero split. The m8 isn't capable of running split timming. It was tuned when I bought the car but I have since tore it down and rebuilt the car. I'm useing a different tb, injectors, fuel rails, pumps, etc..... I'll be retuning the car myself.

-Destin

 

I too am using an M8 with no split. I'd try and use a computer with split timing if I were you.

 

I was unaware the motecs cant run split timing. Is that still true on the newer units? I was just about to bust down and spend the money on one.

 

The M800 can run split. Here is a good read on what you can and can't do with a rotary using a couple different Motecs: http://www.motec.com/tipsfixs/rotary.txt

I am all but set on buying an M800, however I was recently told by a credible source (ecu hardware engineer) that he witnessed timing scatter and lag (ie -advance) under rapid acceleration when bench testing the M800 and the E11v2 using the stock fd trigger wheel and a 60-2 setup. There is some debate about whether this is even important. Personally I think it is. It is also worth noting that Haltech recently tested the E11v2 and found timing split fluctuation of up to 2 degrees.

The Tec3r and Pantera 882 are both supposed to have very accurate ignition systems, but the tec3 doesn't run much beyond basic engine functions and nobody has run a 3 rotor with an 882 yet. The Autronic SM4 also looks promising, but I'm not sure if anybody has measured the timing accuracy under rapid acceleration.

 

no, the m8 can run split timing on a 2 rotor all day long. The M8 was never designed to run a 3 rotor. the M600 was designed for 3 rotor applications.

 

If you lack the knowlege to tune it yourself then make sure you take it to someone that is well trusted with rotaries. If you want to shoot for higher numbers then you have to place alot of trust in their hands, one slipup and you could be stuck with one less rotor. What turbo are you running? What are the specs on your motor? Has it been dowelled?

 

Im still working one the motor it stock right now. I havent picked a turbo yet or a motor set up. I just wanted to start getting an idea of what others that have 20Bs suggest.

 

We're running a Haltech E6K with zero split right now.
The car is going to go Haltech E11V2 soon with full control over the split timing.
I do all the tuning on the car.


-Ted

 

Let me know how the E11v2 works out for you because thats the computer I think im going to go with.

 

that would make me pretty nervous on a turbo 20b....

 

Fortunately it seems to retard rather than advance

"Hello Chris - What we have noticed is that the leading ignition stays at the angle it should, the trailing is either spot on or moves to more retard from the leading (this inconsistancy is of the magnitude of around 2 degrees and never over 3 - i cant see how this would cause a problem as the timing will never advance past what it should however it is an issue that we are certainly going to fix for our own peace of mind)."


Kind Regards,

Matt Wright

Haltech Sales/Support
10 Bay Rd
Taren Point 2229
Sydney, Australia
www.haltech.com

 

Ted could you estimate the power difference in that 20b's NA set-up if you were running split timing? Do you think you would make more or less hp?

 

Is this a recent coversation. I see he said they plan on fixing the problem.

 

Just emailed Haltec and got back a lightning quick response.
This is waht was said about the split timing.

Hello Scott,

I have spoken with our Rotary R&D department, who have informed me the fix for this timing split issue when using a specific trigger angle and coil dwell time was repaired quite come time ago.

 

Interesting. I believe I spoke to them about 6 weeks ago. They said they were going to fix it so I gave them a few weeks and then sent an email to see if anything had been done about it and I got no response to that email or the two subsequent emails so I assumed they were sweeping the problem under the rug. Glad to hear they sorted it out.

 

I dont think we see any noticeable amount of horspower with 0* split.

 

I have finally figured out and have my 20B running with split timing using the AEM computer. I am using the stock front cover off the FD and its pickups, and everything is plugged into the stock wiring harness, except the triggers to the CDI's are spliced off the loom.

Here is a link on how to convert the internals of the AEM computer to get it to work:

http://forum.aempower.com/bbs/viewto...?p=92317#92317

 

Hmmm...that's a good question!
I've always been an advocate of zero or very little split timing, so this is something that runs counter to what my tuning philosophy is, although there is a lot of direct experience that counters that.

This is something that we will be experimenting with a lot once we get everything all installed!

Sorry I can't give you a better guess, but I have no clue what it would be.


-Ted

 

I want to throw a link to Pectel into the discussion because I have heard really good things about the ignition accuracy.

http://www.pectel.co.uk/sub_page.cfm...ucts/editID/16

Sure it may cost as much as 3 Haltech E11v2s, but it probably has more processing power than all of them combined

 

Has anyone heard anything about the new G2 Link system. 40mhz processor, 8 ignition outputs, fully sequential injection, 3d maps and only 1550.00. I have used the old link plus on a supra with no probs but dont know if anyone has tried one on a 3 rotor. I know PFS used one on a NA 3 rotor once. (Old Version)

 

Hows that AEM set up going for you? Iv helped my buddy tune its turbo Integra that had AEM.

 

I might go with the speedmachine deal http://www.speedmachineperformance.com/inc/sdetail/6286

 

does the E11 have nonvolatile memory? I only want the computer in the car when its being driven but I dont want to have to retune it evertime I go for a drive.

 

Microteach Ltx-12s