Maximum Timing Question

135Pats · 11-18-2013, 08:26 PM

Quote:

Originally Posted by AWTT335i

I used to run 17* on E50 + meth.

17 up top, what did you target midrange? That's very aggressive, but sounds doable and i'm sure pretty explosive.

AWTT335i · 11-18-2013, 08:29 PM

Quote:

Originally Posted by 135Pats

Quote:

Originally Posted by AWTT335i

I used to run 17* on E50 + meth.

17 up top, what did you target midrange? That's very aggressive, but sounds doable and i'm sure pretty explosive.

15* midrange I believe. It was just before ATR was released. I had payed for a protune from some half rate shop who had no idea how to tune the n54. They couldn't get more boost than the OTS Stage 2 + aggressive map, so they just kept increasing timing. I've since tuned the car myself and have traded some timing in for more boost.

Iceberg3232 · 11-18-2013, 09:03 PM

Quote:

Originally Posted by AWTT335i

Quote:

Originally Posted by Iceberg3232

Quote:

Originally Posted by BuraQ

When I am ready to throw my car away I will try 18 timing

On E50 I did hit 15 timing but not until after 5500 RPMs and no timing pulls

Running 15.8 with ZERO timing pulls as is...

Anyone push to 17 to see where we stop gaining power? I can't imagine 18degrees = MBT, but that's just a butt dyno reading. Car felt considerably stronger at that timing, although I never got her out of second gear.

I'm obviously not looking to run this timing on my own car for the time being so everyone can calm down on the safety commentary...although I know it was only looking out for a fellow N54 member

Anyone else pushing beyong 16 degrees, if only in certain RPM ranges?

I used to run 17* on E50 + meth.

Used to...why no longer? Was that what the half rate shop tuned it to or was that you messing around yourself?
Just saw your second reply...interesting...

Iceberg3232 · 11-18-2013, 09:23 PM

Quote:

Originally Posted by AWTT335i

Quote:

Originally Posted by 135Pats

Quote:

Originally Posted by AWTT335i

I used to run 17* on E50 + meth.

17 up top, what did you target midrange? That's very aggressive, but sounds doable and i'm sure pretty explosive.

15* midrange I believe. It was just before ATR was released. I had payed for a protune from some half rate shop who had no idea how to tune the n54. They couldn't get more boost than the OTS Stage 2 + aggressive map, so they just kept increasing timing. I've since tuned the car myself and have traded some timing in for more boost.

Wait...are we talking E85 or pump gas?

AWTT335i · 11-18-2013, 09:29 PM

Quote:

Originally Posted by Iceberg3232

Quote:

Originally Posted by AWTT335i

Quote:

Originally Posted by 135Pats

Quote:

Originally Posted by AWTT335i

I used to run 17* on E50 + meth.

17 up top, what did you target midrange? That's very aggressive, but sounds doable and i'm sure pretty explosive.

15* midrange I believe. It was just before ATR was released. I had payed for a protune from some half rate shop who had no idea how to tune the n54. They couldn't get more boost than the OTS Stage 2 + aggressive map, so they just kept increasing timing. I've since tuned the car myself and have traded some timing in for more boost.

Wait...are we talking E85 or pump gas?

E50 blend and meth.

007_e350 · 11-19-2013, 11:23 AM

hey guys I've a really stupid question, 15 degrees means the spark will fire 15 degs before Top dead Center ? maybe at higher rpms is ok but wont this cause knocking if the pistons going up in compression at that time ... sorry this has always been my question never got answered

135Pats · 11-19-2013, 12:15 PM

Quote:

Originally Posted by 007_e350

hey guys I've a really stupid question, 15 degrees means the spark will fire 15 degs before Top dead Center ? maybe at higher rpms is ok but wont this cause knocking if the pistons going up in compression at that time ... sorry this has always been my question never got answered

Yes. Advance refers to degrees BTDC in relation to the compression stroke.

Iceberg3232 · 11-19-2013, 12:19 PM

Quote:

Originally Posted by 007_e350

hey guys I've a really stupid question, 15 degrees means the spark will fire 15 degs before Top dead Center ? maybe at higher rpms is ok but wont this cause knocking if the pistons going up in compression at that time ... sorry this has always been my question never got answered

To my knowledge, this is correct. This is why AWTT was running 15 degrees mid range and ramping to 17 degrees up top.

11-19-2013, 11:23 AM	#28
007_e350 Lieutenant Colonel 226 Rep 1,909 Posts Drives: 335i 2008 MHD'd / x5d E70 Join Date: May 2013 Location: left lane iTrader: (3)	hey guys I've a really stupid question, 15 degrees means the spark will fire 15 degs before Top dead Center ? maybe at higher rpms is ok but wont this cause knocking if the pistons going up in compression at that time ... sorry this has always been my question never got answered
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