iroll's dyno thread

[Obioban]

Originally Posted by maupineda

And you guys are still down vs a 130i, which tuned is at 280. I guess is due to euro header and no rear cats. I am glad I have a Euro Spec 130i! But good job 128i folks

Originally Posted by 631twentyeighteye

My suspicion is that europe has MUCH more experienced tuners and that they can get most power out of the n52's compared to AA. Evolve probably has better gains but was also $400 more compared to AA.

That would be my guess-- I suspect AA is just flashing on the euro tune with US emissions stuff enabled (no actual gains from tuning, just full enabling of the manifold). I bet we see more power from the Evolve cars, where it's actually tuned as well (as 130i's are what they deal with, so it's the normal starting point for their tune and they know what works for it).

Originally Posted by TheSt|G

We will see about that when I finally get the time.

Your headers are the same as ours.

Yep, same exhaust track everywhere it matters for power.

[Suprgnat]

Originally Posted by Obioban

Yep, same exhaust track everywhere it matters for power.

Appears the 130i does have different headers and all three have different exhaust pipes...

E87 LCI 130i (01-2011)
01 Rmfd exhaust manifold with catalyst ZYL.1-3 ULEV2 1 09/2009 09/2012 18407596878
02 Rmfd exhaust manifold with catalyst ZYL.4-6 ULEV2 1 09/2009 09/2012 18407596879
01 Exhaust pipes with primary silencer 1 18307551605

E82 128i (N52 01/2013)
01 Rmfd exhaust manifold with catalyst ZYL.1-3 ULEV2 1 03/2009 18407646692
02 Rmfd exhaust manifold with catalyst ZYL.4-6 ULEV2 1 03/2009 18407646693
01 Rmfd. catalyst + front muffler 1 18307560015

E82 125i (01/2013)
01 Rmfd exhaust manifold with catalyst ZYL.1-3 ULEV2 1 09/2009 18407646692
02 Rmfd exhaust manifold with catalyst ZYL.4-6 ULEV2 1 09/2009 18407646693
01 Exhaust pipes with primary silencer 1 18307560013

[mechavore884]

St1g Im about to send you some time in a zip-lock bag just so you can post those results

[TheSt|G]

Originally Posted by Suprgnat

Appears the 130i does have different headers and all three have different exhaust pipes...

E87 LCI 130i (01-2011)
01 Rmfd exhaust manifold with catalyst ZYL.1-3 ULEV2 1 09/2009 09/2012 18407596878
02 Rmfd exhaust manifold with catalyst ZYL.4-6 ULEV2 1 09/2009 09/2012 18407596879
01 Exhaust pipes with primary silencer 1 18307551605

E82 128i (N52 01/2013)
01 Rmfd exhaust manifold with catalyst ZYL.1-3 ULEV2 1 03/2009 18407646692
02 Rmfd exhaust manifold with catalyst ZYL.4-6 ULEV2 1 03/2009 18407646693
01 Rmfd. catalyst + front muffler 1 18307560015

E82 125i (01/2013)
01 Rmfd exhaust manifold with catalyst ZYL.1-3 ULEV2 1 09/2009 18407646692
02 Rmfd exhaust manifold with catalyst ZYL.4-6 ULEV2 1 09/2009 18407646693
01 Exhaust pipes with primary silencer 1 18307560013

My car had:

Rmfd exhaust manifold with catalyst ZYL.1-3 ULEV2 1 03/2009 09/2012 18407596878

Rmfd exhaust manifold with catalyst ZYL.4-6 ULEV2 1 03/2009 09/2012 18407596879

The part number you posted for the 128i was the older part number.

http://realoem.com/bmw/showparts.do?...87&hg=18&fg=10

[Suprgnat]

Originally Posted by TheSt|G

My car had:

Rmfd exhaust manifold with catalyst ZYL.1-3 ULEV2 1 03/2009 09/2012 18407596878

Rmfd exhaust manifold with catalyst ZYL.4-6 ULEV2 1 03/2009 09/2012 18407596879

The part number you posted for the 128i was the older part number.

http://realoem.com/bmw/showparts.do?...87&hg=18&fg=10

I cut and pasted directly from the models and years listed.

Looks like it:
starts out 12/2006(?): 18407563738 and 18407563737 "up to 3/2009"
then 3/2009: 18407646692 18407646693 "from 3/2009" (no expiration) and 18407596878 18407596879 "from 3/2009 up to 9/2012"
then 10/2012:18407646692 18407646693 "from 3/2009"

Probably it was an either or from 3/2009 to 9/2012.

I didn't look too long, but 130i shows no history of using 6692 and 6693. Makes me wonder what the difference is. I remember from my 510 days there were two exhaust manifolds, one that was a fairly crude manifold and one that created a true 4-2-1 exhaust.

St|G, when you have time, tear out your headers and do dyno runs with both sets of stock manifolds to determine if there is a performance advantage to either. If there was any advantage, I could probably sneak 6878 and 6879 past the CARB.

[TheSt|G]

Originally Posted by Suprgnat

St|G, when you have time, tear out your headers and do dyno runs with both sets of stock manifolds to determine if there is a performance advantage to either. If there was any advantage, I could probably sneak 6878 and 6879 past the CARB.

Right.

[631twentyeighteye]

@stig just take em off and send em to me, ill dyno them

[TheSt|G]

Originally Posted by 631twentyeighteye

@stig just take em off and send em to me, ill dyno them

Your tune doesn't account for such mods.

[631twentyeighteye]

well played

Maybe i'll save my tax returns for headers and evolve...

[maupineda]

Originally Posted by TheSt|G

We will see about that when I finally get the time.

Your headers are the same as ours.

Negative, ours are equal lenght runners into the CAT. Yours are very different.

I think I have sine pictures, will post. I think this is the missing link, which you have addressed with those tasty ss headers.

[ilikebmxbikes]

Originally Posted by 631twentyeighteye

well played

Maybe i'll save my tax returns for headers and evolve...

do it - !

[TheSt|G]

Originally Posted by maupineda

Negative, ours are equal lenght runners into the CAT. Yours are very different.

So why the same part number?

[631twentyeighteye]

I shot AA an email, i believe their tune can be.. "off road" or catless enabled without any check engine lights. I'm waiting on confirmation, but their website specifically states that for the n52 tunes. If so, I may have a surprise for everyone...

[TheSt|G]

Originally Posted by 631twentyeighteye

I shot AA an email, i believe their tune can be.. "off road" or catless enabled without any check engine lights. I'm waiting on confirmation, but their website specifically states that for the n52 tunes. If so, I may have a surprise for everyone...

That just turns off the light, you will fail plug in emissions.

[andrey_gta]

Originally Posted by Suprgnat

Appears the 130i does have different headers and all three have different exhaust pipes...

E87 LCI 130i (01-2011)
01 Rmfd exhaust manifold with catalyst ZYL.1-3 ULEV2 1 09/2009 09/2012 18407596878
02 Rmfd exhaust manifold with catalyst ZYL.4-6 ULEV2 1 09/2009 09/2012 18407596879
01 Exhaust pipes with primary silencer 1 18307551605

E82 128i (N52 01/2013)
01 Rmfd exhaust manifold with catalyst ZYL.1-3 ULEV2 1 03/2009 18407646692
02 Rmfd exhaust manifold with catalyst ZYL.4-6 ULEV2 1 03/2009 18407646693
01 Rmfd. catalyst + front muffler 1 18307560015

E82 125i (01/2013)
01 Rmfd exhaust manifold with catalyst ZYL.1-3 ULEV2 1 09/2009 18407646692
02 Rmfd exhaust manifold with catalyst ZYL.4-6 ULEV2 1 09/2009 18407646693
01 Exhaust pipes with primary silencer 1 18307560013

Look up my thread on Maganflow manifolds with Catylic converters

[Suprgnat]

Originally Posted by andrey_gta

Look up my thread on Maganflow manifolds with Catylic converters

CARB, not EPA is my cross to bear. May pass visual, though.........

[Obioban]

Originally Posted by TheSt|G

That just turns off the light, you will fail plug in emissions.

Correct.

Also, they're not tuning the engine to accommodate for it, so your not optimizing power from them.

Evolve makes you plug in obd2 legal and tunes the ECU for the headers...

[631twentyeighteye]

Originally Posted by TheSt|G

That just turns off the light, you will fail plug in emissions.

As far as i'm aware NYS doesn't have tail pipe sniffers or anything like that. Ofcourse they do OBD2 plug ins, but only to check for check engine lights, i'm unsure of why that would show that the headers would change if the check engine light for the primary cats was turned off?

[TheSt|G]

Originally Posted by 631twentyeighteye

As far as i'm aware NYS doesn't have tail pipe sniffers or anything like that. Ofcourse they do OBD2 plug ins, but only to check for check engine lights, i'm unsure of why that would show that the headers would change if the check engine light for the primary cats was turned off?

It shows up as disabled instead of passing. That is a big difference for emissions and why they market it as a "offroad" tune.

[631twentyeighteye]

I see. I'm going to see what AA has to say about it, if that's the case I may have to rethink my options.

[631twentyeighteye]

update, a local facebook n52 guru said the bms n54 DP fix indeed does work for n52 as a o2 sim. he said it wires in the same way and uses the same pins. will update when I have more info.

[Obioban]

Originally Posted by 631twentyeighteye

update, a local facebook n52 guru said the bms n54 DP fix indeed does work for n52 as a o2 sim. he said it wires in the same way and uses the same pins. will update when I have more info.

If that doesn't work out, the Evolve tune leaves the sensors showing as ready and not throwing a code.