N55 VRSF DP / FBO review, vs. N54
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I personally would not recommend anyone ever doing DP installs on n5x without a lift. Having to reach up to the turbo clamp from laying on your back is just a fucking pain in the ass.
Ha, I can't tell if it would be worse or better with a lift. Helped Spence do his, was a real pain, especially without all of the tools I am used to having at my disposal!
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about what you'd expect from a stupid N55.
335/380. I'm gonna go back after I get my protune and hope for 345/400. I think a Cobb with Protune will put it more in line with a JB4 which are putting out higher FBO numbers on N55s than OTS cobb maps, but that's because JB4 is mostly just a boost controller with very aggressive targets. I am 100% sure the limits of the N55 stock turbo even with the best tune is around 350 whp. Needs meth/e85 to push closer to 400.
I'm now officially saving my pennies for a bigger turbo. I won't be satisfied till I'm blowing kids out of the water north of 500 hp. If my daughter didn't just have an estimate for braces come in at $4700, I'd already have a turbo ordered.
Edit: at least I got my lowering springs installed Friday evening and they look pretty good, so at least one thing makes me not want to sell my car -
2011 E92 M3 6MT ZCP - ESS 625 supercharged
2007 Z4MR
2003 E39 M5
2002 E46 M3
2021 X5 40i -
Regardless of your dyno numbers, your car is still one of my absolute favorite looking BMW's on the road right now.
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Does anyone ever dyno these before installing parts? To get baseline #s? Then again after stuff has been added. And do it all on the same dyno?
Just curious
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I do. I did that with my N54, which produces very similar numbers to the N55 in stock form, so no sense in me paying for another dyno of a stock N55. I do all my dynos locally on a DynoJet. This was an exercise in showing how much less you can squeeze out of an N55 turbo before it runs out of breath, compared to N54. Both of which I have owned, and both of which I have had identical mods on. AS well as to get my baseline of FBO on N55 before my longer-term mods start moving the needle more and I can compare to that.
2011 E92 M3 6MT ZCP - ESS 625 supercharged
2007 Z4MR
2003 E39 M5
2002 E46 M3
2021 X5 40i -
Good to know!
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Does anyone ever dyno these before installing parts? To get baseline #s? Then again after stuff has been added. And do it all on the same dyno? Just curious
Suspenceful dyno'd his before mods I believe.
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I was just interested in seeing figures from the same car, before and after.
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I should have real "after" number later this summer.
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Stop wasting time. What does "later this summer" mean?!
2011 E92 M3 6MT ZCP - ESS 625 supercharged
2007 Z4MR
2003 E39 M5
2002 E46 M3
2021 X5 40i -
Stop wasting time. What does "later this summer" mean?!
August...
About right. Waiting to figure out the whole MHD tuning situation with JB4. Also need to grab a bigger intercooler before I jump on the dyno.
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