The 135I tracktool

[PcarDefector]

Originally Posted by alindquist

This might help agains the terrible pedal feel, did some coding with ProTool and deacivated this codes. I set the remaining codes as 1m, interesting how this will effect the car.
FLR ("Engine Power Reduction to Prevent Brake Disc Overheating")
FBS ("Brake Fading Compensation")
BB_RAB ("Brake Standby")

Also, changed the stock pistons to stainless ones.

Thanks for the write-up and pics.

Question about the BMW performance callipers - are they the same as the stock 6 piston 135i callipers except for the color? Information on other threads is confusing.

[tsk94]

Originally Posted by PcarDefector

Thanks for the write-up and pics.

Question about the BMW performance callipers - are they the same as the stock 6 piston 135i callipers except for the color? Information on other threads is confusing.

Yes they are.

[houtan]

Nice choice for your exhaust. I took the same approach for the same reasons. However, you may want to consider removing the stock resonator as that goes from the two 2.25 pipes to one 2.5” pipe, so you still have a major bottleneck possibly preventing you from taking advantage of the larger axel back piping.

When I did mine, the resonator was replaced with a two 2.25ish inch to 3.5” y pipe.

[Onebunchmin]

I'd recommend a diff brace as it's cheap and easy to install. I got the precision works brace as it looks stiffer than the flat BMS brace.

https://www.ebay.com/itm/11375836517...BoCr9sQAvD_BwE

[Dmak]

alindquist, where did u get the intake duct for relocated inlets??

[alindquist]

Originally Posted by houtan

Nice choice for your exhaust. I took the same approach for the same reasons. However, you may want to consider removing the stock resonator as that goes from the two 2.25 pipes to one 2.5” pipe, so you still have a major bottleneck possibly preventing you from taking advantage of the larger axel back piping.

When I did mine, the resonator was replaced with a two 2.25ish inch to 3.5” y pipe.

Thanks! I'll do that later on when I build the mid section

Originally Posted by Onebunchmin

I'd recommend a diff brace as it's cheap and easy to install. I got the precision works brace as it looks stiffer than the flat BMS brace.

Thanks for the recommendation, but I don't se the point of it to be honest. For a strip car, yes but for a track car no.

Originally Posted by Dmak

alindquist, where did u get the intake duct for relocated inlets??

I made it by myself

[Alow]

Alindquist - did you solve your brake pedal issues? I ask because I have a similar problem and wanted to compare notes.

I have a 128i with the BMW performance calipers, SS brake lines and motul fluid. I already coded off those parameters you mentioned a few posts ago - and while it did improve the consistency of the pedal it's still kind of soft. I already bled the brakes several times and even activated the DSC pump through the computer as well. But my brake pedal still doesn't feel as firm as I want it too. Its also not temperature related because I have cooling ducts and when bleeding brake fluid it's not cooked nor does it have air in there.

I noticed the 1M has a different brake master cylinder than the 128 and 135 and I'm wondering if that's what I need to do. Any input welcome.

[amg6975]

The 1M/M3 brake master cylinder should not be necessary for the performance/135 calipers. Have you bedded your pads/rotors properly?

[Alow]

Originally Posted by amg6975

The 1M/M3 brake master cylinder should not be necessary for the performance/135 calipers. Have you bedded your pads/rotors properly?

Yea, I have. I have been dealing with this for the last couple of years and both years I've done the bedding procedure and can see a nice layer of pad material on the rotor. Besides, if they weren't bedded I would have less braking performance but it wouldn't feel soft so I don't think that's it.

Wondering if at my miles (around 100k) the seals inside the master cylinder aren't as good anymore.

[Dmak]

Originally Posted by alindquist

I made it by myself

how did u made it?? Look oem. Would you make another one?? How much?? Please!!!

[amg6975]

Originally Posted by Alow

Besides, if they weren't bedded I would have less braking performance but it wouldn't feel soft so I don't think that's it.

Definitely not true. Non bedded pads/rotors can definitely affect pedal feel. If the ridges aren't "in sync" then there will be some mushiness as the pad first contacts the rotor.

[Alow]

Originally Posted by amg6975

Definitely not true. Non bedded pads/rotors can definitely affect pedal feel. If the ridges aren't "in sync" then there will be some mushiness as the pad first contacts the rotor.

I see what you mean. But no, pads and rotors were bedded.

[Dieselboy]

Any more photos of your intake setup? Details on how you made the plastic flow tube?
Thanks

[alindquist]

Originally Posted by Alow

Alindquist - did you solve your brake pedal issues? I ask because I have a similar problem and wanted to compare notes.

I have a 128i with the BMW performance calipers, SS brake lines and motul fluid. I already coded off those parameters you mentioned a few posts ago - and while it did improve the consistency of the pedal it's still kind of soft. I already bled the brakes several times and even activated the DSC pump through the computer as well. But my brake pedal still doesn't feel as firm as I want it too. Its also not temperature related because I have cooling ducts and when bleeding brake fluid it's not cooked nor does it have air in there.

I noticed the 1M has a different brake master cylinder than the 128 and 135 and I'm wondering if that's what I need to do. Any input welcome.

Sorry for my late reply! I'm not that active here. Nah not 100%, it went far better with the stainless pistons but not 100%. Have you solved it?

Originally Posted by Dieselboy

Any more photos of your intake setup? Details on how you made the plastic flow tube?
Thanks

Not atm, just made an mold for it.

Here is some pictures from summer 2021.

Some driving from Gotland Ring here in Sweden. Longest track we got! My tires were already overheathed during many laps in a row, but still fun driving.

And this is what I've been up to last couple of weeks.

[Alow]

@alindquist no i haven't solved it either .. moved on to other projects like the LSD :-) will tackle the master cylinder next year i think

[alindquist]

First test fit, it seems like it will be alright. Just need a adapter and some paint, can't stand red calipers... 380x35mm

[alindquist]

Hopefully it fits.

[tracer bullet]

Printed? Hmm. For test fitting or for long term? I mean... it might work long term. Just doesn't seem like a great idea. But to be honest given what you've done and the things you obviously know, I'm sure it's something you're very well aware of

Nice project! Thanks for the updates and pictures. It's been fun to follow.

[amg6975]

Originally Posted by tracer bullet

Printed? Hmm. For test fitting or for long term? I mean... it might work long term. Just doesn't seem like a great idea. But to be honest given what you've done and the things you obviously know, I'm sure it's something you're very well aware of

Nice project! Thanks for the updates and pictures. It's been fun to follow.

A printed brake caliper mount wouldn't last one stop. OP is smarter than that, and it'll just be to test the fit.

[alindquist]

Originally Posted by tracer bullet

Printed? Hmm. For test fitting or for long term? I mean... it might work long term. Just doesn't seem like a great idea. But to be honest given what you've done and the things you obviously know, I'm sure it's something you're very well aware of

Nice project! Thanks for the updates and pictures. It's been fun to follow.

Maby it will last longer than the zip ties

Originally Posted by amg6975

A printed brake caliper mount wouldn't last one stop. OP is smarter than that, and it'll just be to test the fit.

As said, just for mock up! High grade aluminium and machine hours ain't cheap today, the 3d-printer saves alot of money and me getting headache.

Thanks for your comments, I'm glad to see some action in the thread.

[amg6975]

Originally Posted by alindquist

As said, just for mock up! High grade aluminium and machine hours ain't cheap today, the 3d-printer saves alot of money and me getting headache.

Send me a message if you want a hook up for machine time. EDIT: just realized you're in Sweden! Never mind, shipping would probably kill any benefit.

[alindquist]

Originally Posted by amg6975

Send me a message if you want a hook up for machine time. EDIT: just realized you're in Sweden! Never mind, shipping would probably kill any benefit.

Haha yeah for sure
This is what I ended up with, just a small offset adjustment and we're ready to go.