interesting.... I know there is stuff out there... I wish there something less "guess work" and more "buy this" and go tuning on whatever components u put on...
I did speak to some guys in europe.. and the motronic ecu in a P car is a standard ecu thats in audis and other european cars... apparently its common over there...

 

i can't find any info on the search engines, but does the VAG-COM work at all?

i *think* (definitely not certain) that you can do some basic fuel programming on the S4's w/ VAG-COM. unsure about timing.

considering the lack of info, it's probably not possible; doesn't mean someone couldn't make it.


maybe it's time to re-learn those CE books & hack it (but i guess it's easier to pay GIAC or Proto or whoever)

- chuck

 

Nopes the Vag-Com doesn't I remember talking to Garrett a while back and he mentioned making some similair tool readily available to the public. It's always a concern though if a GIAC flashed car has tweaks that anyone can play with... Well someone that doesn't know what they're doing could indeed cause some serious damage. It's a fine line on whether or not to let those features out. Whilst AEM is indeed awesome on Supras, EVOs and the like the 996TT ECU is a more complex/fussy piece. The PSM/ABS, throttle body control/integration is well.. nasty. Piggyback systems that over-ride/lie/trick the car into thinking one thing whilst doing another (sort of like the UNICHIP) didn't really pan out on the TT. I think someone else tried the piggyback as well and same story. There is so much demand for the 996TT/GT2 performance software that if it _were_ indeed possible/reliable and doable, I believe it would have been done. I mean AEM gets ported over on to so many other OBDII and OBDI cars but I don't think it would fair well on a TT. Doing a custom tune and then messing with the stock knock supression might seem like a good idea but if you tune on the street/dyno one day and are CLOSE to the edge (using stuff like AEM makes a lot of people I know get waaaay aggresive) and then the following day it's 10 degrees hotter or whatever think about what the lack of the stock adaptation would do. Not good. I'd love for their to be tweakable software for these cars but I just don't believe tuning the Bosch Motronic is as easy as that. Standalone? Then I'd say do Motec. There really are only a handful of people that tune Porsche Bosh Motronic stuff, Garret, Todd, Gunther to name but a few (not many more) and there has to be a reason. Probably not enough REALLY smart people

Anyways someone like Garret or Todd would be able to write a thesis on this far better than me

 

alex... the thesis is good enough for me
we are just brain storming as always..

 

Hehe people like you and me would love their thesis Geeks! I've listened to Garrett for hours at a time and if only I could retain 1/100th of what he says- he really gets knee deep in it. One thing we were laughing about was his "soon to be released valet mode". I can't wait to start testing that on my car- now hear me out. The first version was limited to 30mph but when you have a 700 kit that would mean hitting the 30mph wall in like no time at all and flying through the windshield. Instead he devised a program for those bastard-valet guys that will allow my car to actually go 70mph but it will take longer than an H1 towing an H2 with and H3 inside. 0-60 in like 10 minutes?

 

the theory is good, but i always fear those *******s will pop into traffic (they're in a turbo, right?) and .... if it goes nowhere, you might have a big dent in the back

i'd love to read the thesis too. love reading about it; not as much fun doing it


meanwhile, i think us 'new breed' are at least trying to inject some much-needed technical discussion into the forum.

- chuck

 

all the better to ditch it it's probably just as well - saves me from myself and having a car i can't drive every day

 

You guys are really pushing these cars in a crazier direction. You young whipper snappers, you. I cannot keep up with what Craig is doing. I think he's got sections of his car in like 40 different states by now? Got *****

Now on to the Valet mode. Garret is fine tuning it (lol) to make it safe/safer but also to stop those buggers joy riding. He said the same thing you said about making it dangerously slow. It's a serious problem in LA apparently and he's gonna put a stop to it! I figure if they try driving it and it feels slow they'll just give up.

Not sure that Garrett or Todd have a lot of time to post that sort of stuff but you're right. If they did, we'd ALL read it...

 

No.. the Supra has such a die-hard following. I give major props to those cars. I wish all the kids would stop crashing them. They became so trendy after that stuff F&F movie and that really killed the idea of me ever having one Besides I could always drive, Sil's, Kong's, Edmund's, Alex Gregory's or... anytime I wanted. Almost as good as owning one- except I didn't have to deal with smog:P I love AWD for all kinds of reason but the best reason to love it as that I can drive a GT700 with different injectors, turbos blah blah blah and pass smog hehe.

 

Well? Does anyone know what the GIAC does? Seems like a lot of hijacking and no real info.

 

They make/develop/tune software for Porsche, Audis, VWs and Bentleys (anything Bosch Motronic) to make the cars have more HP/TQ. In a nut shell

 

And this is done by what? Increasing the boost and timing?

 

and adjusting A/F. yes. we covered all that on the 1st page of your thread.

- chuck

 

No, not just boost and timing, VE table, TB offset, Inj PW table and boost. If you think you can just turn up the boost you can not.

You will cycle for a little while then the ECU will count the errors of over boost and throw a code. Lastly, if you think your AFRs are safe..think again. Go to the dyno and turn the boost up and see what your AFRs climb to. You will be setting up the motor to fall apart. GIAC is not just a boost controller. There are over 18 maps for a single run pattern. Instead of retarding timing it switches maps. There are over 2700 maps total in the ECU.

Heck, just switching to K24s with stock boost will yield a lean condition. Imagine doubling the boost on a K16.
‘

 

I was hoping you would jump in here Stephen.

Are you saying that a stock K24 car will run lean at higher than stock boost?

I'm not trying to bash GIAC (which I have installed on my car). Just trying to gain real perspective.