Tune gains for stock cars on 91octane gas?

[US///M3]

A lot of dyno numbers that I've seen so far were on cars running on 93 octane plus gas + test pipes.
Any dyno numbers out there of a stock car on 91octane gas?

Thanks!

[BrewRifle]

I'm sure you could search and find stock numbers. A lot of folks will post stock numbers as well as after tune numbers for comparison.

[US///M3]

Originally Posted by BrewRifle

I'm sure you could search and find stock numbers. A lot of folks will post stock numbers as well as after tune numbers for comparison.

The ones I've seen so far were for cars running on at least 93 octane gas.

[tom @ eas]

Check a number of our threads for dynos, since we only get 91 in CA.

[regular guy]

Originally Posted by US///M3

A lot of dyno numbers that I've seen so far were on cars running on 93 octane plus gas + test pipes.
Any dyno numbers out there of a stock car on 91octane gas?

Thanks!

You can check the Dyno Database for this with search capabilities.
http://www.s65dynos.com

Click "find all stock cars" -- to find all stock cars. Then type "91" in the search window to isolate to 91 octane.

Then you can "Reset all filters" and start comparing various mods to stock.

[US///M3]

Originally Posted by tom @ eas

Check a number of our threads for dynos, since we only get 91 in CA.

Thank-you, Sir.

[US///M3]

Originally Posted by regular guy

You can check the Dyno Database for this with search capabilities.
http://www.s65dynos.com

Click "find all stock cars" -- to find all stock cars. Then type "91" in the search window to isolate to 91 octane.

Then you can "Reset all filters" and start comparing various mods to stock.

Thanks, regular guy.

[Hujan]

Don't expect a lot. BMW really didn't leave a lot of performance on the table with the S65, especially the late models with newer software. If you go for a tune, I would recommend someone that can also tune your DCT and servo as well.

[325rider]

IDK why you would tune a stock car…. just to fvck with your warranty and OEM engine guidelines. I mean, dafuq m8?

[SflBimmer8484]

Tuning would be most benificial with other modifications like a cat delete,rear exhaust,filter.

Here is what you Can expect with all of the above.


Full bolt on




Pulley only

[325rider]

Originally Posted by Andrew@ActiveAutowerke

Tuning would be most benificial with other modifications like a cat delete,rear exhaust,filter.

Here is what you Can expect with all of the above.


Full bolt on




Pulley only

This.

Thats all kinds of gains….. ALL KINDZ

[SflBimmer8484]

Here is a tune, axle back exhaust,filter

[Hujan]

Originally Posted by Andrew@ActiveAutowerke

Tuning would be most benificial with other modifications like a cat delete,rear exhaust,filter.

Here is what you Can expect with all of the above.


Full bolt on




Pulley only

I assume the FBO M3 had a filter as well? I did not see it listed on the dyno sheet. Definitely shows the value of going FBO if you are going to tune. I personally would not tune if I was going to leave the primaries in place.

[SflBimmer8484]

Originally Posted by Hujan

I assume the FBO M3 had a filter as well? I did not see it listed on the dyno sheet. Definitely shows the value of going FBO if you are going to tune. I personally would not tune if I was going to leave the primaries in place.

Yes a filter was also in place at the time.