Built Diff...

[SYT_Shadow]

Originally Posted by //steve\\

I also know Schirmer also tends to add an external cooler to the diff as well. Most of the cars I see from them are setup to run the Nurburgring so a fairly high average speed.

For HPDE you don't need one. Bimmerworld and I'm sure many others sell a nice kit for this.
For 20 min of hard driving which is typical of a hpde it's supposed to be ok

[SAMM3Y]

What diff temps are you guys seeing at the track?

[nicksm3]

alright guys, the latest email from the pro's at Bimmerworld........

Hey Nick,

I would highly recommend not doing the 3.62. I think The 3.45 is the farthest I would push it. I had a customer purchase a 3.62 for his DCT car and the car would not even move after it was installed due to it being in a sort of mechanical check mate since the transmission had no clue what was going on with the final drive.

Also, with Watkin Glen's massive back straight, I would want as much gear as possible. Let's stick with the 3.45 for sure.

[tsk94]

Originally Posted by nicksm3

alright guys, the latest email from the pro's at Bimmerworld........

Hey Nick,

I would highly recommend not doing the 3.62. I think The 3.45 is the farthest I would push it. I had a customer purchase a 3.62 for his DCT car and the car would not even move after it was installed due to it being in a sort of mechanical check mate since the transmission had no clue what was going on with the final drive.

Also, with Watkin Glen's massive back straight, I would want as much gear as possible. Let's stick with the 3.45 for sure.

I'm assuming this is prior to get the coding done to tell the ECU/TCU about the fairly drastic change in final drive. Probably went into a limp mode as a result.

Obviously it's up to you. But lots of people have gone 3.62 without problem (assuming you get it coded), so I wouldn't worry about that or the top speed as discussed previously. If you're more comfortable doing 3.45 though, then do that.

[nicksm3]

I personally thought 3.62 would be ideal from the last few people I spoke to over the years.

[SYT_Shadow]

Originally Posted by nicksm3

alright guys, the latest email from the pro's at Bimmerworld........

Hey Nick,

I would highly recommend not doing the 3.62. I think The 3.45 is the farthest I would push it. I had a customer purchase a 3.62 for his DCT car and the car would not even move after it was installed due to it being in a sort of mechanical check mate since the transmission had no clue what was going on with the final drive.

Also, with Watkin Glen's massive back straight, I would want as much gear as possible. Let's stick with the 3.45 for sure.

Originally Posted by tsk94

I'm assuming this is prior to get the coding done to tell the ECU/TCU about the fairly drastic change in final drive. Probably went into a limp mode as a result.

Obviously it's up to you. But lots of people have gone 3.62 without problem (assuming you get it coded), so I wouldn't worry about that or the top speed as discussed previously. If you're more comfortable doing 3.45 though, then do that.

I was going to say the same thing: it's probably due to the coding situation before

It is extremely recent that the info is finally out there for the 3.62 gear.

170mph is more than any of us are going to see at WGI

[rhyary]

Originally Posted by SYT_Shadow

Yes, for sure. 170mph sounds great so you're not redlining 7th

Lower gearing also means more shifts, more shifts means more heat... interesting to see how the dct will handle that

more shifts is more fun.
I love the sounds of the shifts.
Formula One style :-)

[nicksm3]

Originally Posted by rhyary

more shifts is more fun.
I love the sounds of the shifts.
Formula One style :-)

Agreed!

[rhyary]

Originally Posted by nicksm3

alright guys, the latest email from the pro's at Bimmerworld........

Hey Nick,

I would highly recommend not doing the 3.62. I think The 3.45 is the farthest I would push it. I had a customer purchase a 3.62 for his DCT car and the car would not even move after it was installed due to it being in a sort of mechanical check mate since the transmission had no clue what was going on with the final drive.

Also, with Watkin Glen's massive back straight, I would want as much gear as possible. Let's stick with the 3.45 for sure.

This is not correct.
With Alex 3.62 tune, it works as it should.
Before Alex 3.62 tune, it worked at the high rpm range, but was confused a bit in the mid rpm range.

[nicksm3]

Originally Posted by SYT_Shadow

I was going to say the same thing: it's probably due to the coding situation before

It is extremely recent that the info is finally out there for the 3.62 gear.

170mph is more than any of us are going to see at WGI

You are correct, More Info is coming out for the tuning of the 3.62 gearing.

Also...only cars seeing those top speeds 170+ at the Glen are NASCAR/Formula cars

[OG Shark]

Originally Posted by nicksm3

alright guys, the latest email from the pro's at Bimmerworld........

Hey Nick,

I would highly recommend not doing the 3.62. I think The 3.45 is the farthest I would push it. I had a customer purchase a 3.62 for his DCT car and the car would not even move after it was installed due to it being in a sort of mechanical check mate since the transmission had no clue what was going on with the final drive.

Also, with Watkin Glen's massive back straight, I would want as much gear as possible. Let's stick with the 3.45 for sure.

I like the guys at Bimmerworld & they have always been very helpful & knowledgeable - but like tsk94 said others have run a 3.62 DCT with no issue - it's all in the coding. driftflo has shown this to be the case with repeatable positive results. I do not know anything about the alextune option but others have had positive experiences with it. I do know that that my setup including the 3.62 has worked flawlessly from the beginning & feel like it moves forward at a pretty decent clip.

I also couldn't imagine running out of top end with the 3.62 on any of the tracks here.

I'm sure the diff offered through BW is a fabulous piece of kit - and you would likely love the gains from the 3.45 on top of the massive benefit of the diff - but I would not discount the 3.62 based on that response. It has been proven to work.

[nicksm3]

Originally Posted by OG Shark

I like the guys at Bimmerworld & they have always been very helpful & knowledgeable - but like tsk94 said others have run a 3.62 DCT with no issue - it's all in the coding. driftflo has shown this to be the case with repeatable positive results. I do not know anything about the alextune option but others have had positive experiences with it. I do know that that my setup including the 3.62 has worked flawlessly from the beginning & feel like it moves forward at a pretty decent clip.

I also couldn't imagine running out of top end with the 3.62 on any of the tracks here.

I'm sure the diff offered through BW is a fabulous piece of kit - and you would likely love the gains from the 3.45 on top of the massive benefit of the diff - but I would not discount the 3.62 based on that response. It has been proven to work.

Originally Posted by OG Shark

I like the guys at Bimmerworld & they have always been very helpful & knowledgeable - but like tsk94 said others have run a 3.62 DCT with no issue - it's all in the coding. driftflo has shown this to be the case with repeatable positive results. I do not know anything about the alextune option but others have had positive experiences with it. I do know that that my setup including the 3.62 has worked flawlessly from the beginning & feel like it moves forward at a pretty decent clip.

I also couldn't imagine running out of top end with the 3.62 on any of the tracks here.

I'm sure the diff offered through BW is a fabulous piece of kit - and you would likely love the gains from the 3.45 on top of the massive benefit of the diff - but I would not discount the 3.62 based on that response. It has been proven to work.

Just got off the phone with a good friend who has the 3.62 with the Alex Tune and LOVES IT! Has the racing diff from Diffsonline and couldn't be happier so....my mind is made up.

[SYT_Shadow]

Ugh tonight i'm going to dream of diffonline's race carrier with the 3.62...

Thanks a lot everyone

[OG Shark]

Originally Posted by SYT_Shadow

Ugh tonight i'm going to dream of diffonline's race carrier with the 3.62...

Thanks a lot everyone

Unfortunately that 3.62 still won't help you beat Serhan

[SYT_Shadow]

Originally Posted by OG Shark

Unfortunately that 3.62 still won't help you beat Serhan

hahaha, I mean the real world which is the only thing that matters. sim racing is like an instagram model rofl

[nicksm3]

Originally Posted by SYT_Shadow

Ugh tonight i'm going to dream of diffonline's race carrier with the 3.62...

Thanks a lot everyone

[//steve\\]

All this talk about 3.62 for your DCT makes me really really want 4.10s for my 6MT

[tsk94]

Originally Posted by //steve\\

All this talk about 3.62 for your DCT makes me really really want 4.10s for my 6MT

Do it.. It's worth it!

[Redd]

I have a 3.45 with a Giken LSD and I love it! Much better acceleration and I don't have to deal with overly high rpms during cruising since my car is a daily driver. The 3.45 really improved acceleration in all rpms, so I can only imagine the 3.62 would be better. If the car is purely weekend/track toy, I would go 3.62 for sure. For daily driving 3.45 makes more sense.

[//steve\\]

Originally Posted by tsk94

Do it.. It's worth it!

On my short list but it's not cheap to do either. Ideally I'd prefer to have a complete 4.10 rear end and be able to pull and stick my OE on a shelf which only makes the whole thing cost that much more.

[nicksm3]

Originally Posted by Redd

I have a 3.45 with a Giken LSD and I love it! Much better acceleration and I don't have to deal with overly high rpms during cruising since my car is a daily driver. The 3.45 really improved acceleration in all rpms, so I can only imagine the 3.62 would be better. If the car is purely weekend/track toy, I would go 3.62 for sure. For daily driving 3.45 makes more sense.

Yea If I drove the car more on the street then I'd go with what you have! Must be hella fun!

[SAMM3Y]

Originally Posted by //steve\\

On my short list but it's not cheap to do either. Ideally I'd prefer to have a complete 4.10 rear end and be able to pull and stick my OE on a shelf which only makes the whole thing cost that much more.

ThTs what I did... I get to bang my ankles on this bad boy on occasion!!