I have a crazy build going on, a hta86 would i be stupid to go from my apexi power fc back to stock ecu? My buddy mentioned that in a week or two your going to be able to run speed density with stock ecu? Any information would be great thanks..

 

We have done 602whp stock motor with the stock ECU. The stock ECU is near limitless.

 

Is the speed density true? Im not to caught up on the whole ecu jazz i got rid of mine like the 2nd year into my 03

 

Bueller?

 

Speed Density or not there is still no need for any other piggy back or afc. Mellon runs his car to 700 whp on stock maf.

There's nothing better than the stock ecu ditch the power fc buy a tactrix cable and start reading way more possibilities with the stock ecu than anything else.

Like for example map switching on the fly, No lift to shift, valet mode, launch maps, Manifold air temp logging, direct boost control with jdm map and gm solenoid, and the list just goes on and on.

 

good info. im planing to have the stock ecu with all my mods done.

 

I would go back to the stock ECU tune ability is great with it.

 

I never knew this. Why do people go with the AEM EMS then? just ease of use?

 

They like to be sold parts by SALESPEOPLE

 

Exactly. But mainly in the past two years there have been more break through from private owners that just want to give the average owner the most use out of the stock ecu just like any other stock component.

Nevermind most piggy backs or controllers are over 200$. All you need to tune is a 90$ tactrix cable and a wide band down the road. Also need a logger like mitsulogger for free or Evo scan for 25$ or they have this new gps logger screen which is sick. imo.

Then from there a little bit of reading and you can be modding your rom to do pretty much everything and more than what stand alones are capable of especially with the speed density release.

All of it is a lot of reading, researching, and testing so dont expect it to just come. You have to take logs, logs, and more logs.

Never tuned a car before in my life and after being on the forum for a few years and reading I have done everything myself and at this point I am tuning my car on a ported 9 turbo with meth injection. Its been fun so far. Always something to do.

 

Running speed density with non standard options, so to be clear i'm not using the 3bar jdm sensor.

94170015 rom

Speed density mods:
5 BAR kalvico sensor (AEM or Zeitronix sell these)
GM Air temp sensor

The 5 bar kalvico doesn't directly wire in so i ordered up an adapter from the folks at Zeitronix via email so i didn't have to splice it in. Perhaps a cheaper solution would be to use that 4 bar sensor floating around which plugs in directly.

I have the GM air temp sensor (open element) welded into the UPIC instead of the intake manifold becuase i'm lazy and i didn't feel much like taking it off for my DD. I also welded in a Tial BOV and scrapped the MAF sensor all together in favor of a hard pipe with a K&N attached to it.

I still have some settings to play around with but its working fine and definitely is safe enough to mess with

 

I talked to a few people and was told i will not as of right now reach 9's with stock ecu.. Whats the scoop...

 

Stop talking to people.

 

 

who do you know that is running 9's with stock ecu? i was on the phone with your ecu guru for about 10 min and he said that their is no way to run speed density right now with stock ecu??