[jeho]

I am wondering if any of you members who you track your car @ the circuit NOT 1/4
have encountered any LIMPS other than oil temp too high when using JB2 or vishnu V2/V3??

I know majority of the e9x members who have this piggyback do not track their car at the circuit but usually just 1/4,
so holding boost for a long amount of time under high heat would not be an issue for them...

Any issues for you guys?

Reason I am asking is im debating whether to go Dinan Stg2 or JB3.
The JB3 is looking very impressive but I wouldn't want to be limping every session

[sambonator]

Most "limps" on track happen due to overheating, and not due to tuning.

Maybe in cold weather in Canada, this might be less of an issue.

[nicknaz]

most tunes usually involve an increase in boost, which means an increase in heat.

If you are thinking about heavy track use I think you should consider staying stock, or going 'whole hog' with aftermarket cooling parts

[longodj]

Definitely go the 'whole hog with aftermaket cooling parts' as Nick said before tuning. I'm stock and overheat every session. Go with an oil cooler and intercooler before putting a tune in.

[leftcoastman]

Procede here - tons of limp issues in the beginning. They are sorted out now. Can do multiple 30 minute sessions in 90+ heat without limp. Damn 290 oil temps, though! Tried running bypass plugs and got the same temps.

Don't think Dinan is your answer:

http://onelapforlife.blogspot.com/20...h-1-and-2.html

The 335i that ran OneLap with Dinan software got tons of limps.

[longodj]

Originally Posted by leftcoastman

Procede here - tons of limp issues in the beginning. They are sorted out now. Can do multiple 30 minute sessions in 90+ heat without limp. Damn 290 oil temps, though! Tried running bypass plugs and got the same temps.

Don't think Dinan is your answer:

http://onelapforlife.blogspot.com/20...h-1-and-2.html

The 335i that ran OneLap with Dinan software got tons of limps.

Not to but...

How the hell did they fit 265/35 R18 x 9" under the fenders!!!

[S4to335]

Originally Posted by longodj

Not to but...

How the hell did they fit 265/35 R18 x 9" under the fenders!!!

Probably with mad negative camber settings.

[sg335]

Originally Posted by leftcoastman

Procede here - tons of limp issues in the beginning. They are sorted out now. Can do multiple 30 minute sessions in 90+ heat without limp. Damn 290 oil temps, though! Tried running bypass plugs and got the same temps.

Don't think Dinan is your answer:

http://onelapforlife.blogspot.com/20...h-1-and-2.html

The 335i that ran OneLap with Dinan software got tons of limps.

Very interesting read. New twist on limp mode. So maybe its not oil temps or coolant temps? Just maybe, bouncing off the rev limiter causes limp mode? This does make some sense but I don't buy it completely as the sole culprit. However I do find his hypothesis a good one as when I drive in second gear at high rpm's, frequently at or near redline, this is when I get limp mode as discussed elsewhere in this forum. Hum, interesting.

[ybbiz34]

Originally Posted by leftcoastman

Procede here - tons of limp issues in the beginning. They are sorted out now. Can do multiple 30 minute sessions in 90+ heat without limp. Damn 290 oil temps, though! Tried running bypass plugs and got the same temps.

Don't think Dinan is your answer:

http://onelapforlife.blogspot.com/20...h-1-and-2.html

The 335i that ran OneLap with Dinan software got tons of limps.

Hahah oh my oh my, I can't believe you brought up that one isolated incident AGAIN! You know, the one where everyone concluded that it wasn't the software.

I know of members who have tracked their car with the flash with no software-caused limp issues.

Oh, I think I remember why you faulted the software, because it did not alter some OEM parameter/setting that triggered limps on its own.

[longodj]

Originally Posted by sg335

Very interesting read. New twist on limp mode. So maybe its not oil temps or coolant temps? Just maybe, bouncing off the rev limiter causes limp mode? This does make some sense but I don't buy it completely as the sole culprit. However I do find his hypothesis a good one as when I drive in second gear at high rpm's, frequently at or near redline, this is when I get limp mode as discussed elsewhere in this forum. Hum, interesting.

I'd agree with the rev limiter hypothesis as that solved some of my issues. On Pocono North course there's a long NASCAR bend and straight I used to take in 3rd and approach redline and had more limp issues than now. I changed my strategy to immediately shift to 4th and the limps decreased. This past weekend the first day I got one limp at the end of a session for high oil temps and then the beginning of the next session (cool oil temps) I pushed a bit harder and kept the revs high and limped almost immediately. I really can't believe BMW would program in something like this, there has to be some malfunction somewhere.

[RedGT3]

No problems in Florida's heat with Jb2 (step,with oil cooler)

[sg335]

Originally Posted by longodj

I'd agree with the rev limiter hypothesis as that solved some of my issues. On Pocono North course there's a long NASCAR bend and straight I used to take in 3rd and approach redline and had more limp issues than now. I changed my strategy to immediately shift to 4th and the limps decreased. This past weekend the first day I got one limp at the end of a session for high oil temps and then the beginning of the next session (cool oil temps) I pushed a bit harder and kept the revs high and limped almost immediately. I really can't believe BMW would program in something like this, there has to be some malfunction somewhere.

It might not be any malfunction, but a safety net to keep the cars "protected" for various conditions like detonation at high rpm, etc. I would have to agree that the safety net is way to eager to engage! I still think the coolant runs way too hot and am not as concerned with 290 oil temps.

[longodj]

Originally Posted by sg335

It might not be any malfunction, but a safety net to keep the cars "protected" for various conditions like detonation at high rpm, etc. I would have to agree that the safety net is way to eager to engage! I still think the coolant runs way too hot and am not as concerned with 290 oil temps.

Agreed. Anyone know if there are any upgraded radiators available or in development? I'm regularly seeing 105-110ish degree coolant temps in a hard session which is not "dangerous" according to the Engine Management tech document but it's still high...

[leftcoastman]

Originally Posted by ybbiz34

Hahah oh my oh my, I can't believe you brought up that one isolated incident AGAIN! You know, the one where everyone concluded that it wasn't the software.

I know of members who have tracked their car with the flash with no software-caused limp issues.

Oh, I think I remember why you faulted the software, because it did not alter some OEM parameter/setting that triggered limps on its own.

Dude - no need to justify your $x thousand dollar purchase. I am simply trying to get to the root of the limping issue.

Procede isn't the end-all-be-all. I banged my head on the wall for a very very long time on track. Your devoted worship of all things Dinan makes your opinion very suspect.

That said, on my 335i the coolant won't cause limp - just reduced power. No lights, just no boost either, lol.

[Bubbles]

Originally Posted by leftcoastman

Dude - no need to justify your $x thousand dollar purchase. I am simply trying to get to the root of the limping issue.

Procede isn't the end-all-be-all. I banged my head on the wall for a very very long time on track. Your devoted worship of all things Dinan makes your opinion very suspect.

That said, on my 335i the coolant won't cause limp - just reduced power. No lights, just no boost either, lol.

Now...now LCM...play nice.

[leftcoastman]

Originally Posted by Bubbles

Now...now LCM...play nice.

How are my alignment settings (credit sg335 for providing a baseline, btw) working out for you? Having a good time watching "faster cars" limp off the track with tails between their legs?

[Bubbles]

Originally Posted by leftcoastman

How are my alignment settings (credit sg335 for providing a baseline, btw) working out for you? Having a good time watching "faster cars" limp off the track with tails between their legs?

I rode in a GT3....holy $h!t....that is a beast!

[nicknaz]

Originally Posted by Bubbles

I rode in a GT3....holy $h!t....that is a beast!

I thought so too... then I got a ride in a 200+hp Caterham around infineon

that totally redefined 'fast' for me

[Bubbles]

Originally Posted by Nick Nazareno

I thought so too... then I got a ride in a 200+hp Caterham around infineon

that totally redefined 'fast' for me

Those car look like a 200hp go-karts.
There will be a GTR at my next event, I'll see if I can bum a ride.

[Bubbles]

Originally Posted by leftcoastman

How are my alignment settings (credit sg335 for providing a baseline, btw) working out for you? Having a good time watching "faster cars" limp off the track with tails between their legs?

I would never follow your advice and flirt with disaster!

[LACA335i]

Originally Posted by jho86

I am wondering if any of you members who you track your car @ the circuit NOT 1/4
have encountered any LIMPS other than oil temp too high when using JB2 or vishnu V2/V3??

I know majority of the e9x members who have this piggyback do not track their car at the circuit but usually just 1/4,
so holding boost for a long amount of time under high heat would not be an issue for them...

Any issues for you guys?

Reason I am asking is im debating whether to go Dinan Stg2 or JB3.
The JB3 is looking very impressive but I wouldn't want to be limping every session

i have limp mode with v2 when i track at california speedway like 1 years ago. Dinan is a different kind of tunning on your car. they used the whole entire DME to rewrite the map for you.. Vishnu or jb or other they use piggyback. Piggyback is less solid than the whole dme rewrite. the disadvantage on the flashing thing; it will voide the whole dme from the factory. Now you have dme warranty from Dinan.

[M3to335]

Originally Posted by longodj

Agreed. Anyone know if there are any upgraded radiators available or in development? I'm regularly seeing 105-110ish degree coolant temps in a hard session which is not "dangerous" according to the Engine Management tech document but it's still high...

How are you checking your cooloant temps on the track?