Here it is, for others. https://bmw.spoolstreet.com/threads/600awhp-335xi-pure-stage-2-build.427/page-6#post-42635
Filippo
N54 WHP, Boost, longevity ?
- Thread starter SlowE93
- Start date
Filippo
Got me^^^^ Hey Rob, good example. Run on sentence with almost no punctuation (props on that one comma in there). But hey, I understood everything you were saying lol ... and I think the Edit button ran away scared!
Filippo
The last setup was pure stage 2 hybrids with port injection and typically around e60 for fuel. I ran what I consider relatively conservative timing, around 10.5 degrees max. I think that’s important to point out as I frequently see logs where people are running what seems like crazy timing. At one time, I recall seeing an ots tune asking for 16 degrees through mid/ upper rpm!
My AFR typically would be around 12.8 @ 3k rpms and slowly taper to somewhere around 11.9 towards the upper rpm range.
I was/ am religious about data logging and analyzing the logs regularly. A lot of my miles were highway trips for work but I certainly didn’t baby the car at all. It saw a handful of 2-3-4th gear pulls weekly and it was autocrossed at least 5-6 times. My “new” car, 07’ 335 coupe, presently has 135k miles, running GC turbos @20 psi, similar tune but with full e85. I run it hard but I am very good about maintance. Before the first performance part ever got installed, the car got a completely new cooling system, belt, pulleys, mounts, hoses, injectors, gaskets, etc. oil changes every 3-3,500k with Motul excess 5-w40. With my current setup, I was shooting for max reliability while still making respectable power. I guess it’s always a gamble when increasing power on stock components but these motors seem extremely tough considering we are more than DOUBLING stock output.
These things blow up/drop compression a lot more than people like to admit. I think 550-600whp is a good place to be as long as you're keeping an eye on things.
I bought my car (2010 135i auto) Dec 31 of 2015 with 46,xxx miles.
I currently have 115,xxx on it.
Been on the MHD v5 E40 tune almost the whole time. Google receipt says March 30, 2016.
Did the LPFP upgrade shortly after, Fuel-It 450 kit.
The plugs and coils ... actually back on a few factory stock coils now. They actually weren't bad.
Later on did the intercooler, RB evo inlets, 1320 downpipes, berk mids, ...
Car has seen more racing and track miles than some put on their car in a year and is my only and daily car, year round.
I have zero complaints and have seen no loss of power or had anything fail, other than 1 waterpump early last year (April I think it was).
granted I'm not the 600hp. But I use every bit of the power I am making probably more often and for longer than those guys and absolutely in more conditions; anyone else ice race their car?
I am on factory stock injectors, factory stock HPFP and factory stock turbos.
I currently have 115,xxx on it.
Been on the MHD v5 E40 tune almost the whole time. Google receipt says March 30, 2016.
Did the LPFP upgrade shortly after, Fuel-It 450 kit.
The plugs and coils ... actually back on a few factory stock coils now. They actually weren't bad.
Later on did the intercooler, RB evo inlets, 1320 downpipes, berk mids, ...
Car has seen more racing and track miles than some put on their car in a year and is my only and daily car, year round.
I have zero complaints and have seen no loss of power or had anything fail, other than 1 waterpump early last year (April I think it was).
granted I'm not the 600hp. But I use every bit of the power I am making probably more often and for longer than those guys and absolutely in more conditions; anyone else ice race their car?
I am on factory stock injectors, factory stock HPFP and factory stock turbos.
I still find myself looking around to see what N54s are running these days. Here's a view of a log. 26 psi on GC turbos with meth injection and 99ron/93 octane fuel.
I wonder how much more the stock hypereutectic pistons can take vs what I'm pushing now. I'd like to push further but this setup has worked for me since early 2017. Keep hearing that the ringlands can close up as well, if the piston doesn't fail itself. I think the meth injection is keeping that at bay so far.
I would quite like to give the Vargas double barrel shotgun setup a go but it's a little bit too pricey for me. I'm UK based.
It's not cost effective for me to ship a fuel rail over there for the core charge either. Regardless this is one of the fastest UK cars currently on the road.
I wonder how much more the stock hypereutectic pistons can take vs what I'm pushing now. I'd like to push further but this setup has worked for me since early 2017. Keep hearing that the ringlands can close up as well, if the piston doesn't fail itself. I think the meth injection is keeping that at bay so far.
I would quite like to give the Vargas double barrel shotgun setup a go but it's a little bit too pricey for me. I'm UK based.
It's not cost effective for me to ship a fuel rail over there for the core charge either. Regardless this is one of the fastest UK cars currently on the road.
How many PSI do you typically run yours at?
What PSI did you make 625whp on?
Have you had the MMPs installed long?
Port meth since late 2016. Made my own because none were available at the time.
I'd rather direct injection though. Keep everything DME controlled and efficient.
Yes I have. Read alot into N53 heads and porting the N54. But it's fairly costly. For the the N54 you'll want cams to take advantage.
I think I'm stuck now. Any significant gains in power will be costly. I've captured the low hanging fruit.
Just checking in with an update on my higher mileage (146k) stock motor 2007 e92 with 6mt. I have been running 525+wtq for 35K, and 600-670whp/ 600-630wtq for another 15k on top of that. This is on twins, GC's with e85 and PI. I did a compression and leak down last month and numbers came back pretty close to when I last checked about 1.5 years ago. Oil consumption is low, less than a quart per OCI. I find small quantities of very fine brass colored particles in my oil filter which I can only assume is bearing material, but I've seen this on my car for 4+ years now with no further signs of trouble so I don't worry about it anymore lol.
I don't daily my car but its pretty typical to see pulls in 3rd - 4th sometimes into 5th gear 6-10x a week since day one, often in 100+ degree heat with some half mile racing and some 1/4 mile passes. I am meticulous about maintenance and datalog basically every time its driven. I run fairly conservative timing, keep boost low in the lower rpm range, don't bang off the limiter, don't launch the car hard, etc. I never beat on it till oil is 180+ deg, change the oil every 3-4k miles with quality oil, RLI Biosyn Extra 0W40. (Side note, I highly recommend this oil on ethanol/ DI boosted engines based on research and UOA's.)
I have basically expected, and planned for the motor to go boom at any moment once I started running over 600whp but so far, so good.....I was in the process of piecing together a built motor but ran into some issues with that setup and have changed paths. I am currently on the fence between finding a low mileage stock motor to keep on hand or going all out on a full Rebello Racing motor. The stock one has done so well that I'm wondering if its actually worth the cost and risk of switching to built motor for my usage and power level. I'm all ears for any opinions here....
I don't daily my car but its pretty typical to see pulls in 3rd - 4th sometimes into 5th gear 6-10x a week since day one, often in 100+ degree heat with some half mile racing and some 1/4 mile passes. I am meticulous about maintenance and datalog basically every time its driven. I run fairly conservative timing, keep boost low in the lower rpm range, don't bang off the limiter, don't launch the car hard, etc. I never beat on it till oil is 180+ deg, change the oil every 3-4k miles with quality oil, RLI Biosyn Extra 0W40. (Side note, I highly recommend this oil on ethanol/ DI boosted engines based on research and UOA's.)
I have basically expected, and planned for the motor to go boom at any moment once I started running over 600whp but so far, so good.....I was in the process of piecing together a built motor but ran into some issues with that setup and have changed paths. I am currently on the fence between finding a low mileage stock motor to keep on hand or going all out on a full Rebello Racing motor. The stock one has done so well that I'm wondering if its actually worth the cost and risk of switching to built motor for my usage and power level. I'm all ears for any opinions here....
Nothing done to the crank hub. I had contemplated the VTT “crank hub Fix”, but ultimately decided with my luck, I should just leave it be. If I built a motor, I’d be interested in their spline lock hub.
