[Clap135]

Originally Posted by Mr. 5

I did 5 runs and I did bog really bad one time but it was totaly because of driver error. I wan't in sync with my shift if you know what I mean.
GIAC told me that there is actually transmission/driveline protection so if we do this bog then the ECU will actually close throttle to prevent the driveline from snapping.

I find that VERY hard to believe. Maybe you worded that wrong. But bog does not cause throttle closure.

Throttle closure causes the bog, and theres alot more to this bog than throttle closure.

throttle closure is caused by boost exceeding target values.

Other reason for this bog, is knock cause by timing set point and fueling.

As you know, cylinders will with more air in 4th gear at 5k rpm then 3rd gear at 3k rpm, same applies for shifting.

[kjrulz]

so ridiculous



6.95 - hotrod182 / 335i w/ JB3 piggyback ECU and Nitrous / 2-shifts

[Mr. 5]

Going back to Famoso in February and hoping for an 11.7.
BTW, I updated the initial thread with my mods.

[Clap135]

Originally Posted by kjrulz

so ridiculous



6.95 - hotrod182 / 335i w/ JB3 piggyback ECU and Nitrous / 2-shifts/broken transmission/8K plus rpm mis shifts

corrected

[Mr. 5]

Originally Posted by Clap135

I find that VERY hard to believe. Maybe you worded that wrong. But bog does not cause throttle closure.

Throttle closure causes the bog, and theres alot more to this bog than throttle closure.

throttle closure is caused by boost exceeding target values.

Other reason for this bog, is knock cause by timing set point and fueling.

As you know, cylinders will with more air in 4th gear at 5k rpm then 3rd gear at 3k rpm, same applies for shifting.

Well, I logged the runs so I'll show the one that was good and then show the one that bogged like crazy.

[machine]

amazing! congrats on the great run

[Clap135]

Originally Posted by Mr. 5

Well, I logged the runs so I'll show the one that was good and then show the one that bogged like crazy.

Nice, i would be curious to see the log. i am assuming you logged it with the BT tool? does it have a boost target parameter?

[sleepergm]

Congrats ... nice times ... and 3.53 wtf X 100 ... that is like a jet plane ... haha

[mycoupe]

what is stock for the 335i? And it seems like congrats are in order!

[Mr. 5]

Originally Posted by Clap135

Nice, i would be curious to see the log. i am assuming you logged it with the BT tool? does it have a boost target parameter?

Yah, I logged all of that. Just give me a few.

[lawwailok]

Originally Posted by mycoupe

what is stock for the 335i? And it seems like congrats are in order!

+1, im curious what number a stock car does too

[malter2.0]

im think it is more impressive that we have a BMW among top five with FAR LESS displacement. every other car around it is V8/V10FI

5.04 - TwinTurboM3 / TT E46 M3 @ 25psi / 1-shift

[creaminz]

Thats fast! Nice!!!

[Mr. 5]

Here are the logs from the main run.
Working on the other run right now.

[Clap135]

That boost is stage 2 race? Seems very low. Also how the car knocked at that low of a boost level with meth is beyond me. The knock looks pretty bad though.

[themyst]

Am I reading that wrong, or is there some knock retard in that run?

-edit Clap135 beat me to it lol

[themyst]

I am starting to believe based on this information that piggybacks are indeed load limited. Come on, look at the boost Mr.5 is running, 15psi tapering to like 13, and running a 9.6 60-130? There are guys running 17-18psi who barely come close on automatics, FBO+meth.

So in a nutshell, load limit is reached, car dumps fuel and boost, power limited in real life, even though power looks good on a Dynojet (inertia based dyno).

[Mr. 5]

hmmm. I know I was having issues with my meth system but I thought that was fixed.
Looks like the runs could have even been better.

[Clap135]

Seems like GIAC is raising timing, so you either have meth flow issues, or the map timing is set to aggressive despite the low boost level. I would be real curious to see what you would be able to hit on 18-19psi

[themyst]

Originally Posted by Mr. 5

hmmm. I know I was having issues with my meth system but I thought that was fixed.
Looks like the runs could have even been better.

Dude, just run 100% meth through the system once. Bet your timing issues will be gone. Just one tankful as a test.

[Mr. 5]

Originally Posted by Clap135

Seems like GIAC is raising timing, so you either have meth flow issues, or the map timing is set to aggressive despite the low boost level. I would be real curious to see what you would be able to hit on 18-19psi

Yah, it's been tested quite a bit so I really doubt that it's an issue so I'll be trying to figure what the issue was.

Originally Posted by themyst

Dude, just run 100% meth through the system once. Bet your timing issues will be gone. Just one tankful as a test.

tempting but I think there's another issue that I may be overlooking.

[dzenno]

Great run but that timing retard doesn't look good