I was reading somewhere I forgot where it was but apparently you can run your car with te stock ecu without the maf! Holy shit could you imagine that? Supposedly you can run a JDM evo 3-bar map sensor in place of the maf. Anyone know if this is true?

The reason I'm so interested in this is because I'm running a pt67 on my car and from a few people I talked to, I run the risk of my big ass turbo sucking in the honey combs from the maf straight into my turbo...not cool.

p.s. I DO NOT WANT TO RUN AEM EMS

 

so go with a GM maf conversion. I saw one working yesterday at CFT, a IX with 280 cams that idled smoother than a baby's butt. The test drive was pretty fun too, very smooth and drivable.

Now as far as I know, no Evo came with a MAP sensor, mitsu's in general have always been mass air flow

 

I found this link on evom...

log boost with JDM MAP sensor (updated instructions) - evolutionm.net

apparently USDM Evos have a 1 bar MAP sensor that can only measure up to 2.2 psi of boost. However, the JDM Evo 9 uses a 3 bar MAP sensor that can measure up to 32 psi of boost.

So far they're using this jdm evo 9 map sensor as a boost controller.It's pretty acurate from the posts i read about it. But I guess it doesn't meet my needs when I go over 32 psi, will it?

my car idles like if i had an old big block chevy in my car...Totally does not sound like an evo, but it idles fine( just really f'ing loud ).

So John you're saying that this evo ran on stock ecu with no maf what so ever?

 

It's still in development by the Ecu GURU pioneers on Evom but they are trying to get 100% reliability and accuracy from converting over to speed density on the stock Ecu which means no more stock air mas and no need for a GM MAF either. At that point the possibilities on tuning with the stock ECU are endless. Just look in the ECU flash forum in the tuning section on Evom.

 

I've used the GM Maf with MAF-Translator to run 35+ psi. We even set a record of 597 hp at one point with the stock ecu. It drove around like a stock.

Ecu development will eventually reach the point to be able to use a map sensor. I think the main issues will be having a signal for IAT and Baro sensor.

 

is the baro sensor for speed density? <---noob

 

Barometric, IAT, and MAF signals all have to be compensated for since it's all present in the stock unit.

 

Thats the pull you did at Buschur's right?Wasnt it like stock block or turbo?

 

no, its using a GM maf with a maf converter, tuned through the stock ecu, and set up as a blow through maf. I'm guessing the fact that its a flow through setup accounts for the improved idle.

 

That was the Evo. It had a stock block and GT35R.