335/N54 Rob Beck turbo upgrade tuning update with BMS JB4 and dual CM10 meth nozzles - 500 whp

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Originally Posted by Sticky

Do not see a neg?

Ok i was on my phone and I accidently hit the neg, then hit postive a bunch of times lol..didnt know if it went thru

I bet a set of AR pipes would help eek out a few more hp

Originally Posted by Matt@Camber-Toe

I bet a set of AR pipes would help eek out a few more hp

I like to think so as well.. now if only i can find a set..

Originally Posted by LostMarine

I like to think so as well.. now if only i can find a set..

Don't mess around with this second hand stuff, e-mail up Andrew, tell him I sent you, and get yourself a brand new set.

great numbers LM, 500 wheel is a nice bar. my only qualm is that you stop the dyno short of 7k. on race fuel you should be making peak power at peak or near peak rpm or sustain it not 1k shy and then drop off like it is. its sure better than stock turbo drop off, but i guess i expected RB's to deliver more up at 6000+. or is it that you lower the boost after 6000 on purpose? or maybe the dyno fan was not adequate and you couldnt pull in enough air?

looking back, one of your 17 and 18psi maps holds power much better up top, so im not sure what to say.

Great numbers.

Originally Posted by oddjob2021

great numbers LM, 500 wheel is a nice bar. my only qualm is that you stop the dyno short of 7k. on race fuel you should be making peak power at peak or near peak rpm or sustain it not 1k shy and then drop off like it is. its sure better than stock turbo drop off, but i guess i expected RB's to deliver more up at 6000+. or is it that you lower the boost after 6000 on purpose? or maybe the dyno fan was not adequate and you couldnt pull in enough air?

looking back, one of your 17 and 18psi maps holds power much better up top, so im not sure what to say.

it was risky enough with those AFR's how far do you really want to me to push my luck?

and im not sure what your getting at with the rpm thing. i let it rip until it shifted, the shop owner was running the dyno though, so maybe a bit of "miscommunication"? im pretty sure he didnt stop it till after it went to shift...

Originally Posted by LostMarine

it was risky enough with those AFR's how far do you really want to me to push my luck?

and im not sure what your getting at with the rpm thing. i let it rip until it shifted, the shop owner was running the dyno though, so maybe a bit of "miscommunication"? im pretty sure he didnt stop it till after it went to shift...

hey if the tune is all its hyped to be i doubt AFR is the concern, you were monitoring it with a pipe sniffer it seems so i dont see you pushing your luck.

and i forgot you are auto, it always seems to slip my mind, so it shifts early? thats interesting, you learn something new everyday. and i guess they put a taper on the tune before the shift as to not spike, which is why it drops off suddenly. so maybe with a manual we would see power to redline, or at least sustained. im now interested to see a manual RB turbo dyno no offence to you or your car, you made great numbers like i said, and your car performs, we all have seen the videos and that was on jb3 right? you should ask for a re-run

Not sure if this is a ridiculous question or not, but can the JB4 raise the rev limiter or not?

No we can't. But he should really be shifting @ 6500rpm or less anyway.

Originally Posted by oddjob2021

hey if the tune is all its hyped to be i doubt AFR is the concern, you were monitoring it with a pipe sniffer it seems so i dont see you pushing your luck.

and i forgot you are auto, it always seems to slip my mind, so it shifts early? thats interesting, you learn something new everyday. and i guess they put a taper on the tune before the shift as to not spike, which is why it drops off suddenly. so maybe with a manual we would see power to redline, or at least sustained. im now interested to see a manual RB turbo dyno no offence to you or your car, you made great numbers like i said, and your car performs, we all have seen the videos and that was on jb3 right? you should ask for a re-run

are you confusing the need for fuel vs the discussion on timing control?

and i think your not understanding what im sayin, if im even saying it correctly. i was running the car, the shop owner held the control to the dyno. the miscommunication may have been him hitting the "stop" before i was at redline. there is nothin stopping me from hittin 6800rpm, that I know of. i watched the tach climb to it. or maybe im not understanding what you are saying.

or are you talking about the boost decay toward redline? i can show you my settings, but we dropped boost @ 6500 and 7000 by 1 psi @ each. no point in holding the boost that high that late if its going to go even more lean...

** edit** after looking even closer at the dyno's, i now have NO idea what your talking about. you can see it reaches 6800 rpm every time..


and yes, i think its time for a rematch against dans Lambo
as shown here: http://www.bimmerboost.com/attachmen...7&d=1298760953

RED is todays/Jb4's control, BLUE is JB3 settings for same peak HP- which is about close to what I ran against him with before. so its hows how much more power "under the curve" I can now put down

Originally Posted by Terry@BMS

No we can't. But he should really be shifting @ 6500rpm or less anyway.

This is true... for the stock curve, heads, and cams.

This will become somewhat of an issue with aftermarket turbos, heads/valvetrain, and cams.

To raise it we would need to flash load a new limit. Which can be done in theory.

Oddjob have you posted up your ASR dynos yet? Send LM a DRF of your best run. I'd love to see them merged on a single chart just to see where we stand right now.

Originally Posted by Terry@BMS

To raise it we would need to flash load a new limit. Which can be done in theory.

Just to clarify, you mean ecu flash in conjunction?

Originally Posted by Sticky

Just to clarify, you mean ecu flash in conjunction?

Right. The JB4 is sitting out on the CAN bus as a node. So it could in theory initiate a reflash to the DME. Provided we could work up the code to do it.

Originally Posted by Terry@BMS

Right. The JB4 is sitting out on the CAN bus as a node. So it could in theory initiate a reflash to the DME. Provided we could work up the code to do it.

So this is something that could be initiated from the JB4 itself? As in the JB4 could have the ability to flash and raise the redline?

Congrats on the new numbers LM. Glad to hear that your car is performing 100%

Originally Posted by Terry@BMS

Oddjob have you posted up your ASR dynos yet? Send LM a DRF of your best run. I'd love to see them merged on a single chart just to see where we stand right now.

Im actually pretty interested in baseline runs fully modded and bigger turbo's, just to get an idea of what im working with at the lowest/stock level as opposed to actual stock baseline. i still want to get a STOCK n54 on that dyno to see how it compares