E92 M3 'refresher' thread

444YYY · Jul 20, 2015

444YYY said:
Ratslaaf@OBDWorx said:

Was this on NA cars bud?

Click to expand...

Yes, this E92 M3 specifically.. Think there was a thread here on this forum. Guy did the exhaust at van Der linde developments. They acknowledged the dip in torque. Think the username of the person was Ez, or e_z or similar

Here's the thread

Looks like the username of that person was changed...

http://www.bmwfanatics.co.za/showthread.php?tid=959

Ratslaaf · Jul 20, 2015

I see the van der linde job as that big dip at low rpm. But then the maps Sherwin showed didn't have these with a decat?

I dunno what's the correct approach to be honest...

444YYY · Jul 20, 2015

Ratslaaf@OBDWorx said:
I see the van der linde job as that big dip at low rpm. But then the maps Sherwin showed didn't have these with a decat?

I dunno what's the correct approach to be honest...

Decat on stock software has the dip in torque. Wasn't that the moral of the story?

Yes, software will fix the dip I'm sure!

Maybe it's tuned (the stock sw) for the NED cycle to produce low CO2 at that point in the rev range... Or for pass by noise....

M3_devil · Jul 21, 2015

Hi

Becareful with x pipe that you go for. Xpipe in wrong position result in a nice dip in low down torque.

As a comparison. My friend M3 with vande linde exhaust ran exactly same software as sherwin 4 door M3 running xflow pipe. From rolling runs sherwin cab opened at least 2 to 3 cars before the gap remained same.

We couldnt believe it. Xflow went as far to borrow us x flow exhaust made for a customer and immediately the car became alive at low rpms.

Ratslaaf · Jul 21, 2015

Ah ok, so I should consult Alister then...

The software won't remain stock on the car, so I'm not worried about whatever emissions things were done at stock.

Thanks for the info gents!

M3_FTW · Jul 21, 2015

I have owned three E9X M3's, I fitted Xcede Xpipe to all of them and they all performed very well.

Ratslaaf · Jul 21, 2015

OK excellent!

Well, before playing with the tune on the car I decided to take a step back to get the bearings done rather. Dyno's have a way of working a car really hard and if that's what I'm going to be doing I'd want the comfort that I'm not going to blow the motor.

So, bearings are being ordered from VAC now. I hate the exchange rate at the moment...

444YYY · Jul 21, 2015

Ratslaaf@OBDWorx said:
OK excellent!

Well, before playing with the tune on the car I decided to take a step back to get the bearings done rather. Dyno's have a way of working a car really hard and if that's what I'm going to be doing I'd want the comfort that I'm not going to blow the motor.

So, bearings are being ordered from VAC now. I hate the exchange rate at the moment...

For interest sake VAC price vs OEM, as a percentage ?

Ratslaaf · Jul 22, 2015

I'd say all in that the VAC bearings are about double the price of OEM. That being said I get very good prices from BMW on their bearings.

444YYY · Jul 22, 2015

Ratslaaf@OBDWorx said:
I'd say all in that the VAC bearings are about double the price of OEM. That being said I get very good prices from BMW on their bearings.

Oh? I thought OEM was more expensive? But in this case, not!

Ratslaaf · Jul 22, 2015

I suppose if you were to buy in the U.S. The difference would be a lot less. But as usual, our shitty ZAR is the main issue so it's hardly a reliable yardstick :roflol:

Pho3niX90 · Jul 22, 2015

I think the bearings at bmw comes to 7-8K for my car. Quote from BMW leo haese

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444YYY · Jul 22, 2015

Ratslaaf@OBDWorx said:
I suppose if you were to buy in the U.S. The difference would be a lot less. But as usual, our shitty ZAR is the main issue so it's hardly a reliable yardstick :roflol:

But then.... How much better are the VAC Motorsport compared to the OEM facelift bearings? The facelift E92 M3 did have a bearing part number change from what I know.... Honest question here..

S65B44 · Jul 22, 2015

444YYY said:
Ratslaaf@OBDWorx said:

I suppose if you were to buy in the U.S. The difference would be a lot less. But as usual, our shitty ZAR is the main issue so it's hardly a reliable yardstick :roflol:

Click to expand...

But then.... How much better are the VAC Motorsport compared to the OEM facelift bearings? The facelift E92 M3 did have a bearing part number change from what I know.... Honest question here..

The number change was due to bearings not having lead. European emissions laws stated all lead had to be stopped. That's why oil samples and analysis on the new bearings don't help. With the old bearings you would get a patern with each oil change / analysis and could tell with the lead % if things were going wrong... not anymore unfortunately. ..

Ratslaaf · Jul 22, 2015

All replacement bearings for the S65 and S85 are the 702 and 703 type. Bearings from BMW costs me Just over R4k for a set. Then you still add bolts and sump gasket to the mix.

VAC bearings landed will be around R7500 after all is said and done. Then you still get bolts and sump gasket.

Ratslaaf · Aug 7, 2015

It's with trepedation that I'm posting this. The big rebuild is about to begin :blueCry:

Pho3niX90 · Aug 7, 2015

Make quick so that I can pull mine in

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444YYY · Aug 7, 2015

Lots of pics please

moranor@axis · Aug 7, 2015

I cant decide if the car looks happy or scared...

Xack · Aug 7, 2015

This is going to be interesting, lots a pics please

E92 M3 'refresher' thread

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