Hi are standalone computer like AEM, Emanagement or autronic Legal in ESP if you do mess with the boost?

 

"14.1.D
Alternate computer control modules may be used whenever an equivalent change to the conventional system is allowed. For example, alternate computer module control of ignition settings or fuel injection is allowed. Direct turbocharger boost control by alternate computer control is not, since there is no equivalent mechanical allowance."

My interpretation seems to be that you can use such a system as long as it does not alter boost, and you'd better be prepared to prove that it does not (if someone even notices you have such a unit). The STX guys seem to be limited to only using devices that are not even capable of altering boost, not just whether or not it does.

Here's the best online site to check rules. It's not guaranteed to be current and accurate, but it's the next best thing to owning a current rulebook.

http://moutons.org/sccasolo/

This goes directly to the Street Prepared rules:

http://moutons.org/sccasolo/Rules/sp.html#s14

one last comment, do you really want to raise boost? Most people I see in powerful FI cars have trouble keeping the torque onthe ground around the sharp corners, which is why FSP seems to get the same times as ESP around here.

 

Thanks for the info. Sorry, I was meant to say without messing with the boost. I'm thinking of running esp with the aem. That unit need a separate boost controller if you want to raise the boost I believe. So I should be safe with just the aem unit w/o the boost controller.

 

I don't think you will get any complaints if you are running it without the boost controller. Best bet is to ask your competitors (the nice, sportsmanly ones), but you shoud be fine. Happy racing!

 

having been there with a DSM, WRX and now the EVO, I would say no.

Stand alone ECU's are a complete replacement for the stock ECU. That is not allowed.

Basically, you need to take the most **** retentive interpretation of the rules when appling ESP rules to the EVO. ( remember we are supposed to be the "overdogs" in the class)

At this point the most conservative option for the EVO is to use a S-AFC or unichip since those products can only intercept the Ignition and fuel settings. Something like the Greddy E-manage (and the UTEC from TurboXS) would be illegal because you can bypass most of the ECU completely.

Intercepting the signals to the ECU is ok, bypassing or replacing them is not legal.

 

Just went through the street prepare rules. ECU is free so AEM I go.

 

The EVO ECU exrts control over the BCS operation. Unless you can show that BCS control is replicated in the replacement ECU in _exactly_ the same manner as OEM, the replacement ECU is illegal. SP rules allow no boost control modifications at all - I believe this is specifically called out in the engine management section, though I don't have my rule book in front of me right now. I absolutely guarrentee you will get protested and DQ'd for this mod if you place near the top of your class.

Charles

 

Charles, urbanknight and Chris W are correct. It's not legal for SP. But run in SM and have fun. Afterall, that's what it's all about.

--kC
(PS Charles... I'll be finishing up your decals this weekend. I just got your e-mail through Yahoo... I don't check Yahoo that often)

 

Yes, I obviously mis-read UrbanKnight's response; I don't interpret the rule the way chrisw does, but it's academic anyway due to the BCS control logic.

As a sidebar, I see that subject becoming a thorny one soon. Even keeping the OEM ECU, it can be reprogrammed to drop the 2G-esque BCS oscillation (if not already, it will soon). With STi boost control being supposedly entirely ECU-controlled, this is going to rear its ugly head repeatedly I think. WRXs and DSMs are not that critical, the turbos are too small to start with, but the EVO and STi are a different story. Sam has already brought this up, but for better or worse it seemed to wither and die without any firm conclusions.

BTW - are you staying STX or moving this season ?? (hint, hint ;-)

Charles

 

I have my 16x8 Volk Gram Lights mounted with 245/45-16 AS03A Hoosiers (Used).

I also have a line on a larger TopMount IC for the wagon that I can swap out in a few mintues between ESP and STX.

What do YOU think?

 

That's precisely what I wanted to hear - excellent ! :-)


Charles