E92 M3 'refresher' thread

[Ratslaaf]

Time for an update. I've decided to let the whole 'concourse' thing go. It's not like this car is even remotely rare, so that means I'm gonna play a little.

In order to get a baseline for where I'm at in stock form, I've done a dyno on the car before doing anything tune wise on the car. I popped in at HM Auto yesterday - what a hell of a great bunch of guys there. My mouth hit the floor when I saw how clean and organised their workshop is. Highly, highly recommended for getting work done on your cars gents. You'll see what I'm on about on race day.

Figured I'd take a little video of the run I did:

[video=youtube]

No surprises, the car gave stock performance. At least I know she's still goo and healthy!

 

[GoCart]

M sounds pretty damn nice Gert. :coolShake:

 

[S65B44]

What kind of power did you make on the wheels??

 

[Ratslaaf]

I was waiting for that...

220wkw and 305nm. Which is to be expected at the reef

 

[200ts]

I was waiting for that...

220wkw and 305nm. Which is to be expected at the reef

Well done that is a good result, is this with the X-pipe or just an exhaust mod?


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[Ratslaaf]

Hey bud, it's only with the exhaust mod. No other mechanical mods have been done on the car.

I'm getting the cats removed this week and then I'll do another run to see how this affects the car. After that I'll be messing with software and do another run. I want to experiment in stages to see what gives the best results at the end of the day.

I want to make sure that each mod gives gains and that I'm not taking two steps forward and one step back.

 

[200ts]

Sounds great already and once the x-pipe is in will sound even better. With x-pipe you will see the biggest gains, you should be around the 230wkw mark at the reef.


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[Ratslaaf]

Which X Pipe did you have the best results with?

 

[S65B44]

Which X Pipe did you have the best results with?

Nice figures buddy. So that was down at the coast? I got about 260whp on my car when I did a dyno run, that was the same day tho that my bearings packed out.:blueCry:

As for x-pipe and exhaust work, there is only one place I would ever recommend, and that is TMMS. I promise you, you have never seen better workmanship. Every system is custom built to the car.

http://www.tmss.co.za/index_motor.html

 

[Ratslaaf]

Thanks Angelo,

No these figures were up at the reef bud. Thanks for the Whatsapp, I'll give Nishen a ring in the morning.

Ta,

 

[444YYY]

I have seen dyno graphs with large dips in low down torque after the decat!
At around 2 to 3k rpm, so jus beware of that!

 

[Ratslaaf]

Was this on NA cars bud?

 

[sash]

Nice Gert.

 

[Tris]

Nice one Gert

I have known Hannes from HM Auto for ages, real stand up guy, I wonder if he still has the turbo bug?

Oh, and you have PM

 

[Ratslaaf]

Oh yes he does, although he doesn't work with tuners anymore directly. Too much 'nonsense' as he put it He has made his dyno available to me for the work I need to do on my car though.

PM Replied bud.

 

[Fordkoppie]

The std. system comes with a beautiful X pipe from the factory just behind the secondary cats.

Nothing to improve there

 

[444YYY]

Was this on NA cars bud?

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

 

[Ratslaaf]

The std. system comes with a beautiful X pipe from the factory just behind the secondary cats.

Nothing to improve there

Yeah I was wondering about that hey. I also believe the stock X-Pipe to be pretty good already.

I'll investigate a little more, thanks!

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Was this on NA cars bud?

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

Thanks bud. I'll spend some time researching a little more. Your input is highly appreciated!!

 

[S65B44]

The only decent part on the std exhaust is the exhaust manifolds... and that's if the car remains naturally aspirated.

As for the dip in torque, the further forward the X of the twin exhaust pipes gets allocated, the better low end torque you get. This has been shown countless times on the international forums.

If someone simply removes the cats, he will get noticeable gains due to less restriction and better breathing, but no manipulation of the torque curve. There is a reason why a Akra system moves the X as forwards as possible.

 

[Fordkoppie]

There is a reason why a Akra system moves the X as forwards as possible.

The Akrapovic exhaust's X sits in exactly the same position as the std one.

They only added an H pipe further forwards