How flexible is the ECU?

kannibul

If I were to put in HFC's (Berk) and a Cat-Back (Stillen) system...

Would I need to have it reprogrammed?

What if I add an intake as well (such as the Stillen CAI)?

Lastly, if I go nuts and decide to swap for Stillen Headers?


Regarding the HFC/Cat-Back - mostly I'd do this for more of an exhaust note inside the car...if road noise was at a lesser level, I'd probably leave it alone...lol

MightyBobo

No, you wouldn't, but it would be advised to reset the ECU and let it re-learn its fuel maps for your new intake.

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I don't own a car anymore.

kannibul

Is there an "easy" way to do that? (curious)

semtex

Disconnect the battery. You're supposed to do that for every mod. And hey, it just so happens that the installation instructions for each of these mods begins by telling you to disconnect your battery. And please don't post a thread freaking out about your windows not automatically rolling back up all the way after you re-connect the battery, lest you wish to mark yourself as one of the many yahoos who apparently lack the capacity to read their owner's manual (hint hint: the window reset procedure will need to be performed, and it's in the manual).

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"There are no small accidents on this circuit." -- Ayrton Senna
316.8whp & 248 ft/lbs (Dyno Dynamics) | 319whp & 256 ft/lbs (DynoJet) (04/23/10)
Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

shumby

there is a ECU reset where you don't have to disconect the bat. Give me a few and I will post it.

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Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

Junior370z

^^^+1 LOL!

Although I too freak out about my windows after installs because I keep forgetting since they are always rolled down LOL!

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shumby

try this



Ok here are the instructions for the easy ECU reset as posted on g35driver.com ( I have changed a few things specific to the G37)

Read the process a few times before you try to do this its ALL ABOUT TIMING:

1) With the key in your pocket/car, push the Engine Start button TWICE (so the car is fully on, but not started)
2) Within three seconds of the car "ON" (again NOT started), Floor (all the way down) and Release the gas pedal fully 5 times within 5 seconds. Do not do this too fast.. 1..2..3..4..5
3) Wait 7 seconds then floor the gas pedal and hold for 10 seconds. After that 10 seconds the Check Engine Light will start to blink slowly.
4) Release the pedal and floor it down once again and hold for 10 seconds. After these 10 seconds the check engine light will disappear then begin to flash much more rapidly. After you have done the following turn the car off and then back on. The ECU is now reset!!


Again, this reset is all about timing, if it does not work for you, try try again until it does! I JUST did this and it works just fine!


Here is some more information regarding the ECU and why you reset it: (This information was found online from another auto forum, much of this information I have read before)

Resetting your ECU. Your ECU is your cars brain. It tells your engine what to do and how to do it based on tons of readings it recieves along with how much throttle is being applied and so on.
After you perform any modification to your car. You should reset your ecu so it can clear its memory and re-learn and adapt to the new parts. Instead of having it try to optimize in with its old parts. Its best to reset and let it learn from the new setup....instead of trying to get it to forget the old.

It can be easily done by unplugging the negative battery cable connection. Try to leave it off as long as possible. Into the night and possibly next morning if you can.

Then you connect the cable back on. Then start the car outside , let it run till its full warm. Normally 5-10minutes during the summer. Some wait till they hear the fan kick on....but you really just need to see the temp gauge at its normal operation position. Do not touch the gas pedal. Then once warmed.

Shut off and use when you are ready.

Also some like to take the car out and run it hard around 3times. Basically 1st through 3rd like you are racing. Of course this sounds kinda weird , I dont know if to believe this. But it cant hurt and it sounds logical , so it doesnt get some weak run and try to learn from that , you immediatly feed it some hard runs to set it self to and you should be good.

You also have to reset it for every mod. I also do it for every season change. This also lets your car adjust to the environment , different humidites and oxygen levels and densities. All are different variables that can effect your cars performance. So to take full advantage , you again want your car to learn and base its settings off a smaller period of time. So resetting it in lets say winter, its like its whole life was driven in the winter , and so on and so forth. Instead of having it try to adapt from its summer time conditions over to the winter...its best to just start fresh.

-- NOTE , do not try resetting your ecu when you have any sort of fuel additives or things in your car that you wouldnt normally have. So fuel cleaners , higher octane fuel , different fuel than you normally run...dont try this then.

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Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

nogoodname

what's bad about disconnecting the Bat and just doing the 15 seconds down and 15 seconds up window reset??

shumby

nothing bad but you loose the radio presets and on the G you loose the phone pairing and voice adaption set up.

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Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

nogoodname

who listens to radio anyways....

shumby

me on long drive to get the news. I like to be informed.

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Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

nogoodname

ok...point made....lol

but the bat way is much easier and just tune the radio stations and set the phone...takes probably less time....if the other way has to be repeated

shumby

true that but i like to play

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Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

nogoodname

the window reset and this should be stickied....

Junior370z

I wanna try the pedal thing just because it's something new for me to try out LOL! It's like... Tap, tap, shift and twist!

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DON'T DO IT!