Markert Motor Works Dyno Thread (many inside)

[ncsubowen]

Curious how remote tuning works? Do I send you my setup and you send a tune back or do I give you dyno data from a local dyno?

Putting together an S52 setup for my E30, impressed by these results!

[328ijunkie]

3/8/16
Tuned 2 more S54 Cars. First an E46 M3 stock except headers (dont recall brand). Stock airbox, plenum and all.


This next one is an S54 Swapped E36 318Ti. Car had already been dyno tuned by another reputable tuner who i guess didnt realize the throttles were only opening ~80%. After fixing that and playing with the vanos (no ing timing changes) and fueling this is the result: Car has stock ZM3 airbox, plenum and Euro headers.

[328ijunkie]

Ive been slacking on updates :(
2/23/16
E46 M3 NASA GTS Car. Was already dyno tuned by another very prominient E46 M tuner, this is over his... Car has euro headers/race exhaust, intake and stock airbox


From there i detuned it for GTS3. Took a while to get power down will keeping the motor/everything happy and jumping back and forth punching data in the NASA GTS calculator.

[2mAn]

Yea my peak torque was only 205, so Id be happy with more of it, and if I got to 230whp I would be pretty damn happy. Its not really a street car anymore as I have a daily driver now, but its also not a gutted track car either

[Bimmerman325i]

225 is pretty strong for an M52/S52 hybrid already; with exhaust you might extend that peak a smidge but probably gain a lot more under the curve.

The most built 2.8 I've seen was a JP race prep motor running the mid-grade Sunbelt cam, KK headers/exhaust, M50 intake and all the other trick parts. It put down around 240-245whp from memory, redlining around 7500. With stock S52 cams I'd estimate (napkin-math) that you're close to as far as it'll go, especially since the Al block can't take as high of revs as the iron ones. The built motor was really gutless until 4000rpm also, so would be a poor choice for a street car.

[2mAn]

yes.

so would you say the S50/2 cams are worth about 15whp or more on the M50/2 motors? I want to get my car dyno'd again with a proper exhaust setup. Im not expecting much more, but I think theres more out there with a legit setup.

[328ijunkie]

yes.

[2mAn]

Also retuned an Alum block M52 E30 after it got headers/a nicer exhaust setup

Just noticed this, does this one have an M50 Intake manifold ?

[spiDmang]

I'm half tempted to do the ASC delete myself... I have an LSD and snow tires after all.

I think it's totally worth it. Such a waste of space :p

I was literally on the mountain yesterday with my S52 E30. With my snow tires and LSD, I was passing everything. This new WRX looked at me like I was crazy since i was driving an old, shitty BMW to go ski LOL. I feel with the ASC out of the way, my old E36 M3 sedan was way more predictable with the LSD and snow tires

[328ijunkie]

:p

[Mwishlist]

Just wanted to say I've been driving a few days on my s52 Markert tune and it's awesome! I can't compare apples to apples because my previous ECU, was tuned by someone else but water damaged. The car drove well but had some weird idle issues and gauge issues. Anyway the difference between the two is night and day. Idle is solid and it pulls like a beast!

[328ijunkie]

IMO a chassis dyno is just not that repeatable (1.5%) to say that the elbow was the reason for the change in power.

Something like that as a minimum needs to be A-B-A test with multiple runs of each. Obviously this was not done because the intention wasn't to test the elbow it was tune the whole package

From reading the logs while tuning and the real 'major' jumps from the conforti to my off the shelf and then to the boot at the end, and all the other tuning ive ever done, short of "cheating" and letting the car cool down or the dyno room improve, this dyno has been extremely consistent.

Tuning changes only up to that point:

[digger]

IMO a chassis dyno is just not that repeatable (1.5%) to say that the elbow was the reason for the change in power.

Something like that as a minimum needs to be A-B-A test with multiple runs of each. Obviously this was not done because the intention wasn't to test the elbow it was tune the whole package

[328ijunkie]

Your results may very given the full bolt on nature of the car tested but none the less, gains are there :)

[Chapel]

Thats pretty significant! Im not sure what the ASC boot is, but Im guessing its the original rubber one.

ASC is the traction control throttle body system

http://www.bimmerforums.com/forum/showthread.php?984257-E36-ASC-Delete-DIY

basically there's a SECOND throttle body in front of the main throttle body and the intake boot that goes from the MAF to the ASC Throttle is shorter.

Deleting the ASC throttle body requires a new intake boot.

I'm half tempted to do the ASC delete myself... I have an LSD and snow tires after all.