Turbo S50 running super rich at WOT input needed.

[BMW_TUNER]

Trying to find out of a 2001 530i 5 speed will work with my G260 clutch setup? Any input. It is a 23007503993 part # which goes back to an E36.

[BMW_TUNER]

I guess its ZF Tranny time. What all do I need to swap the tranny.

[BMW_TUNER]

It is behaving really bad 3rd to 4th under boost if I let the RPM and thus the boost fall I can double clutch it and shift it but if I run 3rd to 7500 at 18psi and tray to shift fact to 4th its almost completely blocked out. When I shift out of third under boost I can feel the tranny not want to disengage and then I let it out it is finally off load then when I put in the clutch again it shift into 4th no problem. If I short shift all day the tranny is fine but it is clear that it can't handle the may 400-500hp its making.

[M3PO]

If it's difficult in one or a couple gears, I'd say worn trans (synchros). If it behaves the same in all gears, master and/or slave. I'd replace both to have peace of mind on the hydraulics.

[BMW_TUNER]

Tune is getting Refined constantly. Trans is not going to hold real power. The G260 is not designed to hold 400+ lb/ft of Torque. So I am sourcing a M3 5 speed. I will have to switch the pilot bearing but that is ok, at least I can make my existing driveshaft work with the magic guibo. I will probably have get a new shit selector.

[BMW_TUNER]

Me. 1st to 2nd is really tough and 2nd to 3rd is also tough - has to be babied or feels like I'm locked out.
But I'm blaming it on an old trans. I'm going to change fluid and see what happens.

Yeah after a pull it can be hard get any gear. Time for fresh fluid and a new slave

[ak-]

So the car is running great on the new FPR and Revised tune. Now I just need to get it to shift when I run it out. When pulling in second or third get it becomes really hard if not impossible to shift. I am thinking its the slave cylinder (old) and it is just not completely allowing the clutch to be disengaged. Anybody else have this problem with a high hp and a getrag 260? BTW it makes 20 psi so high hp is an understatement.

Me. 1st to 2nd is really tough and 2nd to 3rd is also tough - has to be babied or feels like I'm locked out.
But I'm blaming it on an old trans. I'm going to change fluid and see what happens.

[BMW_TUNER]

So the car is running great on the new FPR and Revised tune. Now I just need to get it to shift when I run it out. When pulling in second or third get it becomes really hard if not impossible to shift. I am thinking its the slave cylinder (old) and it is just not completely allowing the clutch to be disengaged. Anybody else have this problem with a high hp and a getrag 260? BTW it makes 20 psi so high hp is an understatement.

[BMW_TUNER]

Still dipping into the 9's but spending much more time above the 9 mark now with proper FPR scaling.

[BMW_TUNER]

<10.8 maybe too rich for optimum power, but it's not entirely too rich to be unsafe or detrimental. Many factory tuned turbo cars run in the 10's at WOT (again, not ideal for power in most applications on <e10 pump gas)

Did the kit ask you to install any electrical component (such as a "converter box", or resistor) onto the MAF harness?

No the kit is a new MAF wired into the factory wiring with flange, the tune and 80lb injectors. Due to the FPR issues I wasn't able to get much in the way of revisions done to the tune yet. I am seeing mostly low 10's- 10.2 at WOT at 3500 but I need to map it because the car is to fast and the power comes on so quick it is impossible to watch the gauge and drive even on the 1/2 mile stretch of road I am doing WOT pulls on.

I totally agree that I would rather have a safe 10.8:1 at WOT especially at 7500prm especially because the power is so much that it is almost barely usable. I need video of the outside of the car because I think I am spinning halfway through third gear when I get back on the gas. 255 pilot super sports are no match for however much power I am making.

[squidmaster]

Yeah it's still not totally sorted and it still rich but man is it fast.

<10.8 maybe too rich for optimum power, but it's not entirely too rich to be unsafe or detrimental. Many factory tuned turbo cars run in the 10's at WOT (again, not ideal for power in most applications on <e10 pump gas)

Did the kit ask you to install any electrical component (such as a "converter box", or resistor) onto the MAF harness?

[hyperE30]

Glad to see it was an easy fix in the end!

You done turbo tuning? Since you in the springs now I want to put another kit to gather and be tuned properly

[hyperE30]

Who did your tuning? It is possible to tune around the pressure but all of my tuning is remote so I am trying to keep things consistent between data logs but my baseline pressure is 125% of what the base tune wants to see.

It's on a Miller set up, we just messed with it to get the afr's where they needed to be since we had no support.

[BMW_TUNER]

Yeah it's still not totally sorted and it still rich but man is it fast.

[squidmaster]

Glad to see it was an easy fix in the end!