[motivman]

Originally Posted by designatedposter

i probably did less than 100 easy miles. then i decided it was taking too long, so i simulated start stop in the driveway to try to get even distribution of clutch material on flywheel

handbrake on, and i just put it into 1st, and slipped clutch like i was driving off, then push clutch in, wait a couple seconds, and did it repetitively for like 20-30 times. the goal was to get even distribution of clutch material on flywheel.

i have not slipped on this clutch. others also have also had luck close to 500 wtq.

note: i also still don't floor it in 6th gear at 3000 rpm . haha. it is POSSIBLE that is too much for the clutch. do you have any issues in lower gears like 4th?

I floored it a few times in 5th and 6th gear to test it out (after driving like a granny for the first 250 miles) , it was slipping very bad with the stage 2+ map. back to stage 2 e30, slight slip in 5th and 6th gear, but it is holding up fine now, and clutch pedal is getting harder... was pretty soft at first. I will take it easy for the next 500-750 miles...then go back to the stage 2+ map and see how it goes... hopefully I haven't ruined my brand new clutch... SMH. Bootmod3 logs shows the car making about 480 wtq at peak on the stage 2+ map.

[motivman]

[/QUOTE]note: i also still don't floor it in 6th gear at 3000 rpm . haha. it is POSSIBLE that is too much for the clutch. do you have any issues in lower gears like 4th?[/QUOTE]

Isn't this the point of spending all that money and labor getting a new clutch? to be able to go WOT in 5th or 6th gear on the highway and make use of all that torque with the stage 2+ map? Should I have gone stage 3+ clutch and SMFW instead??? LOL

[n55david]

Originally Posted by designatedposter

i probably did less than 100 easy miles. then i decided it was taking too long, so i simulated start stop in the driveway to try to get even distribution of clutch material on flywheel

handbrake on, and i just put it into 1st, and slipped clutch like i was driving off, then push clutch in, wait a couple seconds, and did it repetitively for like 20-30 times. the goal was to get even distribution of clutch material on flywheel.

i have not slipped on this clutch. others also have also had luck close to 500 wtq.

note: i also still don't floor it in 6th gear at 3000 rpm . haha. it is POSSIBLE that is too much for the clutch. do you have any issues in lower gears like 4th?

you purposely sat in your driveway basically causing your clutch to slip over and over? you're joking right? good chance you glazed the flywheel building up that kind of heat and constant slipping.

I don't mean to laugh but damn dude that's hilarious.

[motivman]

Originally Posted by Phantom10R

you purposely sat in your driveway basically causing your clutch to slip over and over? you're joking right? good chance you glazed the flywheel building up that kind of heat and constant slipping.

I don't mean to laugh but damn dude that's hilarious.

I personally wouldn't try his method with my car, but he seems to be fine, He hasn't experienced any slip with the 550i clutch and stage 2+ map... myself on the other hand... this thing is slipping worse than my stock clutch on the stage 2+ map... but back on stage 2 e30, and it's holding strong, so fingers crossed, that in a few hundred miles, when I go back to stage 2+, this thing holds the power... so far, I have to say I am a little disappointed though.

[AmuroRay]

Originally Posted by motivman

I personally wouldn't try his method with my car, but he seems to be fine, He hasn't experienced any slip with the 550i clutch and stage 2+ map... myself on the other hand... this thing is slipping worse than my stock clutch on the stage 2+ map... but back on stage 2 e30, and it's holding strong, so fingers crossed, that in a few hundred miles, when I go back to stage 2+, this thing holds the power... so far, I have to say I am a little disappointed though.

You guys are crazy. I don’t even want that much torque - especially on tiny 255 (265 if you’re hardcore) tires. Is that power even useable?

[motivman]

Originally Posted by AmuroRay

You guys are crazy. I don’t even want that much torque - especially on tiny 255 (265 if you’re hardcore) tires. Is that power even useable?

yes, and very fun. Being able to keep up with a GT500 will put a smile on your face... I couldn't believe I could keep up with a GT500 till it happened... was very suprised. once I get this clutch slip issue figured out, PS2 and LSD is next on the mod list... haha. I want 550whp and whatever torque comes with it, then I will be satisfied.

[designatedposter]

Nope not kidding. Clutch is great. Every 10 reps I crawled under my car and blew on it

[designatedposter]

Correction, clutch holding beyond 550 wtq
6MT Clutch Strength https://f30.bimmerpost.com/forums/sh....php?t=1628178

[motivman]

Originally Posted by designatedposter

Correction, clutch holding beyond 550 wtq
6MT Clutch Strength https://f30.bimmerpost.com/forums/sh....php?t=1628178

yeesh, I wonder why mine is not holding stage 2+ though... doing good in stage 2 e30... look at those log perfection....

https://www.bootmod3.net/log?id=60f6...729b192f0f40cf

https://www.bootmod3.net/log?id=60f6...90c620423c513c

https://www.bootmod3.net/log?id=60f6...0b436ef6b56701

Per Virtual Dyno, I am making about 404 whp, 415-431 wtq on the stage 2 e30 map.

[motivman]

can an expert please look at this log and let me know if this is clutch slip? this makes no sense at all. I have driven on this 550i clutch for about 750 miles now... it seems to hold the power on stage 2 E30, but it is slipping in even 3rd gear on stage 2+... do I need to break in the clutch more? is it possible this is not clutch slip and it's something else? now I kind of wish I went spec 2+ or 3+, I feel like I threw $1600 down the drain. With my stock clutch, I could go wot all day in 3rd gear, 5th and 6th gear was the issue, now with the 550i clutch, I can't even pull in 3rd gear? should I take this back to the shop? if this was installed wrong, then wouldn't the clutch be slipping on the other maps also? I am so confused at this point.

https://www.bootmod3.net/log?id=60f7...0b437913781514

[AmuroRay]

Originally Posted by motivman

can an expert please look at this log and let me know if this is clutch slip? this makes no sense at all. I have driven on this 550i clutch for about 750 miles now... it seems to hold the power on stage 2 E30, but it is slipping in even 3rd gear on stage 2+... do I need to break in the clutch more? is it possible this is not clutch slip and it's something else? now I kind of wish I went spec 2+ or 3+, I feel like I threw $1600 down the drain. With my stock clutch, I could go wot all day in 3rd gear, 5th and 6th gear was the issue, now with the 550i clutch, I can't even pull in 3rd gear? should I take this back to the shop? if this was installed wrong, then wouldn't the clutch be slipping on the other maps also? I am so confused at this point.

https://www.bootmod3.net/log?id=60f7...0b437913781514

You’re not beating on it, are you - you could have glazed it? It should hold - and you may want to adopt the other guys brake in method at this point if this isn’t working

[motivman]

Originally Posted by AmuroRay

You’re not beating on it, are you - you could have glazed it? It should hold - and you may want to adopt the other guys brake in method at this point if this isn’t working

nope, not beating on it, not at all. I drive like a grandma for a few hundred miles, then try a WOT pull here and there to see if the clutch holds. It holds strong on stage 2 e30 map, but on the stage 2+ map, everything falls apart. I am starting to think my stock original clutch was actually stronger? at least with that one, I could WOT in 3rd gear on the stage 2+ map...this won't even WOT in 3rd gear like my original clutch...SMH. calling the shop tomorrow to see if what they suggest doing at this point... I mean, maybe what I am feeling at this point with the stage 2+ map is not clutch slip? is it possible it is something else? like a failing diverter valve or something?

[AmuroRay]

Originally Posted by motivman

nope, not beating on it, not at all. I drive like a grandma for a few hundred miles, then try a WOT pull here and there to see if the clutch holds. It holds strong on stage 2 e30 map, but on the stage 2+ map, everything falls apart. I am starting to think my stock original clutch was actually stronger? at least with that one, I could WOT in 3rd gear on the stage 2+ map...this won't even WOT in 3rd gear like my original clutch...SMH. calling the shop tomorrow to see if what they suggest doing at this point... I mean, maybe what I am feeling at this point with the stage 2+ map is not clutch slip? is it possible it is something else? like a failing diverter valve or something?

Did you delete the CDV?

[motivman]

Originally Posted by AmuroRay

Did you delete the CDV?

yes, per the tech he deleted the cdv. I supplied them with a brand new slave cylinder.

[designatedposter]

here's a clear example of clutch slip in 4th
https://www.bootmod3.net/log?id=5e16...90c660d027d38a

here's a more subtle slip
https://www.bootmod3.net/log?id=5e16...90c66f5be9ab24

when viewing logs, disable everything except engine speed, and vehicle speed. you will see RPMS spike, but vehicle speed stays linear.

CDV delete only quickens the clutch to grab when shifting. if you are in gear accelerating, CDV has no impact on how strong a clutch grabs.

[motivman]

Originally Posted by designatedposter

here's a clear example of clutch slip in 4th
https://www.bootmod3.net/log?id=5e16...90c660d027d38a

here's a more subtle slip
https://www.bootmod3.net/log?id=5e16...90c66f5be9ab24

when viewing logs, disable everything except engine speed, and vehicle speed. you will see RPMS spike, but vehicle speed stays linear.

CDV delete only quickens the clutch to grab when shifting. if you are in gear accelerating, CDV has no impact on how strong a clutch grabs.

hmmmm, so my graphs do not look like the cluth slip example you highlighted...not really seeing the rpm spikes... so if my clutch isn't slipping, then what in the world am i experiencing with this map? when accelerating, I hear the turbo spool, then it cuts off.. then it starts spooling again... is my turbo maybe just too weak to run this map? are my tires weak and loosing grip? i also never smell burning clutch...so maybe my clutch has been fine this entire time?

[motivman]

resurrecting this thread, still chasing down break up at WOT with the stage 2+ E30 map. it is so weird because I have no issues with the stage 2 e30 map or stage 2 91-93 octane maps. I thought the issue was my diverter valve... upgraded that to turbosmart plumback and MST inlet pipe, but its like the issue got worse. I have no boost leaks... again, car runs perfect on the stage 2 e30 map... not sure what is going on, it is definitely not clutch slip... already upgraded to 550i clutch. this log shows exactly what I am experiencing. Looks like DME is randomly reducing boost target.. ie from 21 PSi to 14-17 psi, then up to 21 psi again, then crashes again. Is my LPFP not keeping up? no way to monitor what LPFP is doing on the N55.. HPFP is holding strong... any help with be greatly appreciated to finally figure this out. Tired of throwing money at the car and the issue still persists. I am running about e50 octane

https://www.bootmod3.net/log?id=6103...0b4342c6c8d267

[motivman]

can someone look at my most recent log? still having break up issues at wot on stage 2+ e30 map. upgraded diverter valve, but issue still persists....

[n55david]

Originally Posted by motivman

can someone look at my most recent log? still having break up issues at wot on stage 2+ e30 map. upgraded diverter valve, but issue still persists....

throttle closures.. closes a few times in the run. thats your issue.


what map sensor are you running btw

[motivman]

Originally Posted by Phantom10R

throttle closures..


what map sensor are you running?

3.5 bar

[n55david]

Originally Posted by motivman

3.5 bar

have you sent the log to ptf? I bet halim makes you a revision for the closures

[thejeremyman9]

Originally Posted by motivman

resurrecting this thread, still chasing down break up at WOT with the stage 2+ E30 map. it is so weird because I have no issues with the stage 2 e30 map or stage 2 91-93 octane maps. I thought the issue was my diverter valve... upgraded that to turbosmart plumback and MST inlet pipe, but its like the issue got worse. I have no boost leaks... again, car runs perfect on the stage 2 e30 map... not sure what is going on, it is definitely not clutch slip... already upgraded to 550i clutch. this log shows exactly what I am experiencing. Looks like DME is randomly reducing boost target.. ie from 21 PSi to 14-17 psi, then up to 21 psi again, then crashes again. Is my LPFP not keeping up? no way to monitor what LPFP is doing on the N55.. HPFP is holding strong... any help with be greatly appreciated to finally figure this out. Tired of throwing money at the car and the issue still persists. I am running about e50 octane

https://www.bootmod3.net/log?id=6103...0b4342c6c8d267

Catching up on this thread... this log dosn't seem to show any clutch slip. As noted above you are getting throttle closures and the DME is pulling back timing and boost at the same time. However, it's not clear why that's happening. I would definitely send the log to PTF and see what they say.

Also, are you running multimap?