i believe what sunoco does is they take thier 94 and "water" it down with 89 to make 93 at the pump....correct? nothing wrong with that...still gettin 93 whether it be pure or blended...still the same basically.

 

Yea nothing wrong with that but they said they didnd have the higher octane to mix- then there would be improper octane rating for what you thought you were buying

 

this is the problem correct

 

Ok let me get somethings straight here. The ECU has two maps?
Depending on the detonation characteristics ( meaning prolonged detonation in consecuttive drive cycles) the ecu will go into a " limp" map?
When and WHO? discovered this?
The software from the reflash program doesnt "reflash" the entire operating range?
Or , are you saying the flash will only do what map you ( in lamens terms) would be in when driving lets say to the dyno that day.
If that is the case then some of the variances like you say are easier explained. Concidering i was bone stock and ran 287 WHP on the reflash alone.

 

I dont know yet on most this these are the possible scenerios posed. in the vishnu forums under the XFlash release shived point blank told Al what he found when toying with the Tech Com software and skewed AFRs were magically appearing in reflashed cars ( in another thread). Al has yet to respond to anyting about this and has not addressed it publicly. I/we are simply trying to learn (with limited tools) the nature the car behaves with common reflash systems when things like det happens- not limp mode per say. Also publicly I am not trying to cast doubt or sayng there are things wrong with certain reflash systems I am just trying to get the users/experts opinions on how the car behaves in certain circumstances

 

Like wise.
I am a liitle confused. Well not confused. I understand the operational characteristics of the basic ecu. Just in general i was surprised to see this. I would also like to see some of these issues addressed. Could you send me or post a link to the thread or forum you are speaking about. I would like to see first hand what was discussed.
One more question for you. Is all the reflash software the same. Or do several companys offer a plug in system to reflash the stock ecu. Who makes it?
Just curious to see the info on the software and hardware associated with such a devise.
It might help clear some things up.

 

I have to call BS on the 89 gas. If you pay for 93 that is what you get. I think the car hit det then could not pull timing out and hit the 2nd map. I guess this is the "Safe map" If that fails you get a CEL then it goes into limp home mode. Also how does anyone know what map is being flashed? And you would be screwed if you flashed the safe map with the dynoflash and it hit det then flipped to the other map still getting det I think you would then get a CEL and limp home mode would be active.

 

I will say this. MOST cars have a limp home mode, if the o2 goes out you get a CEL and the car will not let you rev it high and it very little power. The reason for this is because if the computer can not get o2 readings it goes pig rich and lets you drive it to the shop, it's to cover there *** if the car really does have a problem. My NSX did this when the o2 went out on it. Just a map good enough to get you to the shop to get it fixed.

 

These are also very good points. I dont understand though where the "2 maps" came from. Why cant there be more than two or just one. Does anyone know for sure?
The stock ecu in closed loop can pull timing because of detonation or any overabundance of fuel from the injectors. Many things can happen. It may just learn the different drive cycles and keep them stored.
Has anyone from mitsu confirmed any of this?
Even still my AEM is ordered.

 

AEM is the answer, you know what maps you have then not playing grab *** with the stock computer. Again you don't have limp home mode or a fail back map so you better know what the hell you are doing

 

good point but guys heed the disclaimer of so you better know what the hell you are doing

 

AMEN

 

I CANNOT say i am an expert, but i have tuned several of my own and customers vehicles when i was in business. Unfortunatly i had to leave the automotive world because of family illness
. It is not a piece of cake. ALOT of time is involved in just road tuning to get it safe. Also the tightrope between dyno A/F and road A/F.
It is just nice to have a plug and play setuo to work with. It takes one less headahce out of the picture.
Many other cars out there i have worked with had to be hard wired in or run in parallel.

 

lol, here is my game plan. I heard the Buschar turbo back last night and it sounded good to me with the high flow cat and that is how I am going to run it. So I am going to order that and the SAFC thing for fuel. Next I will do the cams, pump, injectors, FMIC, and all of the piping and get the car running right and make sure that I can pass emissions with the stock ECU with that piggy back computer. I will even spend the $25.00 "wow" on the test just to make sure. Next I will do the AEM and maybe a bigger turbo down the road. I should get some parts ordered in the next few weeks I just have to call the shop to do the installs and see how busy they are.

 

Also you may want to watch your stock ECU a little before you go with the AEM, get some data logging software and see how it acts. Like o2, injector duty cycle, and wherever else. Get a EGT and see what does what. This I think will help out some. Also I like they Tym is going to support people that get the AEM from him and you can send him your maps and will take a look at the data logged files and help you out.