Video Bmw n54 17t China Cast major problems Video

Torgus

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Any comments?




Also,


26 vs 28 psi E50 runs on stock n54 block:
attachment.png

DAW Hiflow Max are 19Ts right?

I assume if reved out to 7200 it would be exactly at 600whp at redline on the 28PSI map. That tq curve falls off a cliff past 5.25k. Still don't see the 30 psi target hitting 700whp peak given the gains the last 2 psi made. I would also assume these are running maxed out and far of the non existent compressor map. Still very nice results from upgraded twins vs. Stock. 10t vs 19t sized wheels.

What is the highest DAW dynojet map? Can someone link?



To a comment I made earlier on this forum, No twins are making 800 wtq at 4k:
attachment.jpg

and this BW turbo is slightly smaller than a 6266 and boost was tapered past 5k IIRC. 35 PSi midrange or so.

Just thought I would make a thread for some discussion.
 
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fmorelli

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Probably a good call, since I'm just messing with you (and you're taking the bait!) 🤣🤣🤣
 
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SlowE93

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Also these are @Blaster3500's numbers, RB Gamefinisher 19t's are probably the best option for twins. 1 less psi still made more power then the daws.

View attachment 65366

These are @13titp's numbers his 17t's gamefinishers made 705 @ 30psi

View attachment 65367
I dunno wtf is goin on in this thread here anymore but, you can't base turbo efficiency off of a dyno sheet. A dyno also does not show lag.
For a true comparison, on a dyno, you would need the same exact AFR tables as well as same timing advance and curve for 2 different manufacturer turbos. Say you have 9° up top and a conservative AFR ....
You can easily gain over 30 whp on same turbos just by adding timing and leaning out AFR.
Psi means very little in the comparison you are trying to make here is my point.