FYI------ no chip needed for FMIC
 

<center><img src="http://pictureposter.audiworld.com/8383/inta-coola.jpg"></center><p>i have ben running the EVOms FMIC with the APR v.3 chip for about a week now and i have had no C/E lights no codes, nothing
boost response is not affected (at least not enough that i can feel) the power is much better even with the stock KO3 it runs great, my detonation problems are gone and the power has NO surges. it feels like it pulls harder in the higher revs, no more power drop after 5400 (even though boost still tapers).
but, i used to get spikes up to 23 and it would quickly settle to 18 psi, now it just jumps to 18 and holds until the higher revs when it tapers off
one thing to note, the turbo is working MUCH harder to maintain the same boost, and my oil temps rose from 215 to 240ish under my "normal" driving conditions and the turbo will glow much brighter than i have seen it before. i would reccomend a turbo timer for anyone planning on doing a FMIC with the stock KO3
ignore the sig for now

Re:FMIC
 

Interesting observation. I guess the OE I/C had sufficient pressure drop to limit the top end air flow.

The fact that your turbine hsg. is glowing brighter than before supports the likelihood of lower pressure drop between compressor outlet and intake manifold.

Also, the fact that you're no longer seeing boost spikes indicates you've probably improved VE (air flow) a bit.

Checked your EGTs lately? With the add'l equipment (to eliminate air flow restrictions) you have installed, you *might* be approaching the WOT "fuel ceiling" of the chip. Not sure how much fuel delivery "headroom" is built into the chip.

Cool - more
 

Hi,

I'm really enjoying watching the progress =)

Electron:

"Interesting observation. I guess the OE I/C had sufficient pressure drop to limit the top end air flow.

The fact that your turbine hsg. is glowing brighter than before supports the likelihood of lower pressure drop between compressor outlet and intake manifold."

Wouldn't the FMIC have MORE pressure drop than the stock IC? I think that this would be why the turbo has to work harder to maintain the same boost.

I was thinking that since the turbo is working harder to compensate for more pressure drop, he's getting higher oil temps and a brighter glowing turbo. With a bigger turbo, this wouldn't be as much of an issue...

Thoughts?

FB

It could be glowing more because the turbo is working harder to fill the larger volume of air that
 

is in the new FMIC and new tubes that are on the car now. His car could also be running lean now and that will raise the EGT.

yep, it has more volume to fill, so it is working harder to maintain the same boost
 

the stock injectors are good up to 220-240,

nope not running lean, thought of that
 

wouldnt you have run into this problem before me?

Is it me or does it sound like it defeats the purpose if the turbo has to work that much harder?

defeat what purpose?
 

if you were looking to put less stress on your motor then yes, it would defeat the purpose.

but if you are lookin for more power and cooler intake charges then no, it serves its purpose

and if you have a larger turbo, then providing the additional volume is not as big of an issue.

that's only when you begin to pressurize it, after that, it doesn't matter how large the volume
 

But what would have an influence is the temperature drop and the resulting pressure drop accross the FMIC. Depending where the pressure sensor is, and how the ECU uses this to determine the work the turbo does. If the design is to maintain a given pressure at the intake manifold, then the turbo will need to work harder now to create a higher pressure at that end of the FMIC so the pressure will be at the correct level at the intake manifold.

just my take on this situation, and if not entirely correct, I'd like to be corrected.


Also, it's just interesting that multiple tuners have had issues with adding a FMIC to a DBW car by it resulting in Limp Mode at high RPM/Boost, and yet you don't seem to have this problem.

CMH, when exactly did this occur with you - is it possible Charlie is not driving his car hard enough to have this happen to him? (though it sounds like he's working it pretty hard)

Well a properly designed FMIC should yield both benefits, no?
 

The FMIC is usually touted as a reliability option, which just also happens to allow power to be made by advancing the timing and running a cooler intake charge.

If you're consistenly running higher underhood temps then you've gotta think that reliability is suffering.