TheSt|G Dyno Day (You asked for it for long enough)

[MarkkyyMan]

Glad you finally got some Dyno numbers.

[InControl]

Originally Posted by TheSt|G

I have no photoshop skills, but I'm sure someone does. Not sure how relevant it is until it's cooler and I'm not pulling timing. A local 330i buddy and I are tentatively scheduled to return in the fall.

Very good numbers, as expected. Stig, is car noticeably faster over your buddy's 330i?

[135Pats]

Beautiful curve

[Taskmaster]

Originally Posted by andrey_gta

I dont care about any 10 HP at the top end. I am very satisfied with the Middle story around the dips

That should be the same regardless of tune honestly. The biggest difference between these curves comes from the headers, though the tune isn't doing any favors either.

[Fume]

Thanks for posting this! Makes me want to get super sprint headers + tune even more.

[MarkkyyMan]

Originally Posted by Fume

Thanks for posting this! Makes me want to get super sprint headers + tune even more.

Do it!!

[ilikebmxbikes]

looking good

[TheSt|G]

Originally Posted by andrey_gta

Awesome stuff!!!
Thanks for taking the time

Did EVOLVE remote tune this run in any way? Will they in the future?

They did not. This was purely runs to see where I am. Nothing has changed since my last power thread a year or so ago with the manifold.

Originally Posted by InControl

Very good numbers, as expected. Stig, is car noticeably faster over your buddy's 330i?

We have never done any pulls. He also has the 3 stage(stock), Supersprint headers, and an Evolve tune, so I would imagine they would be pretty close in power. The weight will be his biggest enemy, though he did just do some fantastic Recaro Speeds.

Originally Posted by Fume

Thanks for posting this! Makes me want to get super sprint headers + tune even more.

It's pretty excellent.

[andrey_gta]

Originally Posted by TheAxiom

That should be the same regardless of tune honestly. The biggest difference between these curves comes from the headers, though the tune isn't doing any favors either.

I am going to disagree.
A header optimized tune fixes the power band near redline. The Dynos without optimization drop off at 6.5.

In this example from Stig the drop is fixed. If that is fixed additional improvements at the Disa dips should exist in theory

[Taskmaster]

Originally Posted by andrey_gta

I am going to disagree.
A header optimized tune fixes the power band near redline. The Dynos without optimization drop off at 6.5.

In this example from Stig the drop is fixed. If that is fixed additional improvements at the Disa dips should exist in theory

Negative captain - US cars and EU cars have one key difference when it comes to tuning: The exhaust manifold

EU cars:



The US manifold flows like poop on purpose - it's meant to heat up the catayst faster on cold start ups. Of course, this means higher RPM power production suffers due to lack of flow.

MapleRidge headers didn't correct the problem with the header design, they just removed an obstuction - I'll show you

Stage 2
Stage 3 off road
Stage 3 off road dyno tune


Notice the power doesn't drop off towards redline, compare that to GTKrockeTT's dyno - both same tune, but the curve is very different. Another thing - the Second DISA hump makes the most torque AFTER it's been dyno tuned too.

[Kgolf31]

Originally Posted by andrey_gta

I am going to disagree.
A header optimized tune fixes the power band near redline. The Dynos without optimization drop off at 6.5.

In this example from Stig the drop is fixed. If that is fixed additional improvements at the Disa dips should exist in theory

They drop off at 6.5k because that is where fuel cut is for redline.

[andrey_gta]

125i do have the same crippled exhaust manifold, yet when turned manage to keep the power until just past 6.5. So that creates confusion

The AA dyno @ 4.5 k rpm is always interesting, it is whats different about their tune

[128GP]

much torks i like. I just gave back a 328d loaner while my 128 was in for service for a few days. That thing hauled @ss. I mean literally. I was quite surprised to read that the 328d is in fact the 180hp 2.0 liter, not the 240 hp version. But alas, the torks, it was cranking out 299, much more than our 199 stock.

nice job stig, thanks for this.

[631twentyeighteye]

Very good numbers. Not surprised to see the supersprints outshine the mapleridge headers. For the money the mapleridge headers are worth it as they give you gains without the high cost of supersprint albeit if cost isn't a factor by all means go supersprint.

[wolfe]

Very nice, thanks for taking the time and effort to do this.

[TheSt|G]

Not a problem guys. I'll try to find time again when it isn't a million degrees outside.

[Freon]

Originally Posted by TheSt|G

Peak Crank (assuming 17% loss per usual for BMWs):
HP: 283.38
TQ: 266.85

Gains(over stock BMW quote)
HP: +53.38
TQ: +66.85

Is there any actual baseline pull of your car before mods, or another unmodified 128i on this particular dyno?

[Taskmaster]

I was just thinking today - those numbers are actually right in line with a 287hp/280HP verson of the VQ35DE in the 350Z/G35.

24X would put it closer with the 298/300hp Revup motor - Impressive for an engine with .5 liters less displacement.

With a header specific tune, I'm sure there is more in it.

[Kizzu]

well done good to see an n52 pulling up those figures! just a question if you don't mind.. how is your af ratio ?

[TheSt|G]

Originally Posted by Freon

Is there any actual baseline pull of your car before mods, or another unmodified 128i on this particular dyno?

Nope for me and not that I'm aware of for that dyno. I don't really care about dynos. This was a product of endless forum badgering.

Dyno does seem reasonable though as my fiance's ZHP was putting down a little over 200 at the wheel, which makes sense for a healthy car like hers with a tune. Also managed to code out that SAP, which I think might be a first for the M54? Who knows.

Originally Posted by Kizzu

well done good to see an n52 pulling up those figures! just a question if you don't mind.. how is your af ratio ?

All steady until the top end where timing was pulled for the heat and the engine went super rich.

[Taskmaster]

Pics of the Fiance's dyno.

[TheSt|G]

Originally Posted by Kgolf31

Good numbers.

It is a thing to note that I pulled timing in about 75*F and ran rich as well. Talking with AA it was apparent that mine was pulled from the Exhaust Temp Gas being too hot and dumping fuel to save the OEM cats. If you have high-flow cats this shouldn't be an issue though...right?

This appears to be right on par of where I should be come headers with a simple prediction of gains.

Missed this earlier, that CAT saving is disabled on my car.