[Ant Anthem]

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[Ant Anthem]

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[Dmacc]

I always had this problem both with the jb3 and the jb4.

[Bme30]

try shifting about 5800rpm and see if there is a difference. I have procede and sometimes have the same issue. typically when i shift a little earlier the bog issue is resolved, or at least goes unnoticed. I guess at the very least it cant hurt to try good luck getting this resolved.

[themyst]

The bog has been plaguing 6MT cars for years now. It gets worse when you run more boost. Either try Cobb or NLS.

[Bme30]

Originally Posted by themyst

The bog has been plaguing 6MT cars for years now. It gets worse when you run more boost. Either try Cobb or NLS.

+1 on another good option.

[Ant Anthem]

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[Gugs]

Originally Posted by Ant Anthem

I can't beat stock M3s because of this. Its a whole 2 second delay on a 3-4th shift. Whats the use of having a fast car.......

You cant beat stock m3s for other reasons like boost or vacuum leak, your FBO.

Stock with just tune beats m3 all day.


Have you guys checked for vacuum leaks? I noticed a bog while shifting due to a cracked vacuum line that was feeding one of my wastegate actuators. I was still making full boost but it was slower spool (full boost at 3k not 1800-2k like normal.
And it was bogging like shit between shifts.
As if I was loosing ALL boost and having to spool from 0 like off the line. It was creating this 3-4 second lag like I didn't even push the gas. Almost like the restriction of Not having downpipes.

The turbos inertia when shifting from 2-3-4-5-6th should allow for instant boost after shifts.

Alternatively via the jb4 interface (laptop) You can also turn off the bogfix and adjust the lagfix value lower or higher to see if this helps.

[secretsquirrel]

I think this is driver dependent. A friend of mine has this problem with his car, but I cannot reproduce the issue when I'm driving it. The differences in driving styles that I can see is that he "dumps" the clutch with full travel with each gear change. By contract, my gear changes only involve about an inch of travel.

[blackbeast06]

I agree with the squirrel. When I dump the clutch hard inbetween shifts I get the bog. Other times when I don't fully put the clutch to the floor and work it out slower than a full dump I can have a great shift without bog. The fact that I can experience both bog and no bog shifts leads me to believe that it depends on how you work the clutch.

[drfrink24]

BMS CDV delete/mod + BMS clutch stop = brazillion times better.

[marcvtec]

Originally Posted by drfrink24

BMS CDV delete/mod + BMS clutch stop = brazillion times better.

This will not help the throttle blade closing, Cdv delete is just nice to feel the clutch better.

Shift at a lower rpm used tonhelp my car, also just keeping the gas down the whole time did the trick as well, but puts more stress on the tranny.

[marcvtec]

Also running a cobb will do it as mentioned earlier, and the nls I still believe has issues

[BoostAddict]

They all do it. I bogged on Cobb and jb4. It's really frustrating.

[marcvtec]

Originally Posted by ***********

They all do it. I bogged on Cobb and jb4. It's really frustrating.

That I did not know interesting, thanks

So it would appear no tune truly has a steady working bog fix then.

[Gugs]

Originally Posted by marcvtec

That I did not know interesting, thanks

So it would appear no tune truly has a steady working bog fix then.

Which further points to driver error

[Jeff@TopGearSolutions]

Either send logs to BMS to try to fix it, or you may want to try another tune. Sometimes you just cant avoid the bog on some tunes.

To whoever said they all do it, I'd have to disagree, PROcede didn't bog on me and I wasn't running NLS.

[vereak82]

latest firmware i did notice this as well i adjusted the bogfix from 100 to 80 and on my car felt fine after that..

[Ant Anthem]

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[BoostAddict]

Originally Posted by Jeff@topgearsolutions

Either send logs to BMS to try to fix it, or you may want to try another tune. Sometimes you just cant avoid the bog on some tunes.

To whoever said they all do it, I'd have to disagree, PROcede didn't bog on me and I wasn't running NLS.

Bme30 has a v5 and bogs without the nls.

It's just a function of the dme as stated earlier, even stock bogs. And how does driver error cause this? Didn't realize shifting fast was bad lol

[Jeff@TopGearSolutions]

Originally Posted by ***********

Bme30 has a v5 and bogs without the nls.

It's just a function of the dme as stated earlier, even stock bogs. And how does driver error cause this? Didn't realize shifting fast was bad lol

Has he sent logs into Vishnu? Is it a beta or finalized map?

If people are tired of bogging they should try a new car if its inherently stuck in the DME

[OpenFlash]

With the Procede, the only time i've seen bogs is when the revs hit the rev limiter during the clutch-in period. This can happen due to the lag between the actual throttle pedal lift and the throttle closure. Or if the driver stays too long on the throttle once the clutch goes in. And once the rev limiter is active, the throttle blade tends to have a mind of its own. Using the NLS relay to trigger an aux rev limit 100rpm below the DME redline is a good solution to this issue. In fact, it's what got my ETs down from 11.0-11.2 to 10.8s. The 1-2 shift, at 25psi of boost, was killing me.

Shiv