Help please. Is this good for m54b30 15psi? Please describe why with explanation.
Many thanks in advance.
Screenshot_20180220-092903.jpg
SmartSelectImage_2018-02-20-09-36-10.png
e39 540i 6speed Supercharged,
E36 v8 m62 with m60 headers, Turbp HX-40 0.6-0.5bar or 9psi, custom exhaust & Turbo manifold, injectors 440cc, ECU Invent EMS-2, Mishimoto Intercooler and oilcooler, etc…
Depends on the end goals. Describe your goals and maybe we can help.
Sent from my iPhone using Tapatalk
1989 535i - sold
1999 M3 Tiag/Dove - sold
1998 M3 Turbo Arctic/black - current
2004 Built motor TiAg/Black - Sold
2008 E61 19T Turbo-Wagon - current
2011 E82 135i - S85 Swap - current
1998 M3 Cosmos S54 swapped Sedan - current
1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53
e39 540i 6speed Supercharged,
E36 v8 m62 with m60 headers, Turbp HX-40 0.6-0.5bar or 9psi, custom exhaust & Turbo manifold, injectors 440cc, ECU Invent EMS-2, Mishimoto Intercooler and oilcooler, etc…
I got 510whp out of an s200....so i'm not sure if that helps. Im almost certain it was tapped out because it tapered boost off at about 6500 rpm.
S52 on pump gas no meth.
It depends on your view of it. I have an S256 on my 2.8 running 18psi, it doesn't want to run any more boost than that. The post-IC temps are in the 50C range. Is it ideal? Nup. Does it haul ass? Yep. Does is being less than ideal bug me? Yep.
I will attach a pic of an SX-E compressor at 15psi on 3.0 liters. This compressor looked pretty nice on my 2.8 at 20-something psi. The reason this compressor looks good is because the map leans over more to the right, rather than more to the vertical, like most do. The difference is being oriented towards flow at lower PR, whereas there seems to be a heap of turbos that appear to lean towards small displacement and high boost. Or at least that is my take on having played with a heap of maps. Happy to be corrected though.
PCapture.JPG
1989 E30 - M50B28 Turbo - ZF 8 Speed
Gents, what is the efficiency on turbo map means? Is there relation with temperature? I meant, as low efficiency higher intake temperature.?
e39 540i 6speed Supercharged,
E36 v8 m62 with m60 headers, Turbp HX-40 0.6-0.5bar or 9psi, custom exhaust & Turbo manifold, injectors 440cc, ECU Invent EMS-2, Mishimoto Intercooler and oilcooler, etc…
That probably holds truth but at 15psi I think you'll be fine, you would be close to your goal I'm sure. Took 19 psi for my 510whp run.
Id go with the s300 frame like said before though. Theres no room on the 200 frame if you want any more power.
Last edited by Mklock; 02-20-2018 at 01:03 PM.
Last edited by vollosso; 02-20-2018 at 01:11 PM.
1989 535i - sold
1999 M3 Tiag/Dove - sold
1998 M3 Turbo Arctic/black - current
2004 Built motor TiAg/Black - Sold
2008 E61 19T Turbo-Wagon - current
2011 E82 135i - S85 Swap - current
1998 M3 Cosmos S54 swapped Sedan - current
1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53
1996 332IS
Built 3.2
CES/Steed TS Precision 6466, spraying a "$π!℅" load of meth.
Technique Tuning 80# tune.
1/4 mile 10.84 @ 136.72
Your 1 and only stop for all your BMW performance needs
WWW.CESMOTORSPORT.COM
e39 540i 6speed Supercharged,
E36 v8 m62 with m60 headers, Turbp HX-40 0.6-0.5bar or 9psi, custom exhaust & Turbo manifold, injectors 440cc, ECU Invent EMS-2, Mishimoto Intercooler and oilcooler, etc…
Never had problems with heat intake temps, and yes the turbo clearly ran out of efficiency because it tapered boost off at redline. I also ran the biggest hotside I could.
Put simply this is a great turbo for ONLY 450whp. Past that results may very. I would guatentee an s257 could achieve 450whp.
hey guys dumb question.
So if it turbo is 'maxed' does that mean it will not make any more boost or just that it will not make any more power?
say from 23psi to 30psi it just blows hot air but WILL make keep making more boost.?
Both kinda.
Sometimes it just won't make anymore boost.
Remember boost is only what the engine can not consume.
So, if a small turbo is used, with a real big engine, then the engine may consume all the air even the hot air when the turbo is out of its efficiency range and just not make anymore of either.
Like say you were to install a 5858 on a 6.X liter Corvette. The turbo will max out at XX boost and just not make any more. Also, as rpm rises, boost will fall as the engine needs more air at higher rpm. So say its maxed out at 7psi at 4000 rpm. Then at 5,000 rpm boost will fall to 6.5 or 6 psi.
But, it will also stop making power before any of that.
Sent from my E6782 using Tapatalk
1996 332IS
Built 3.2
CES/Steed TS Precision 6466, spraying a "$π!℅" load of meth.
Technique Tuning 80# tune.
1/4 mile 10.84 @ 136.72
Your 1 and only stop for all your BMW performance needs
WWW.CESMOTORSPORT.COM
It depends which side of the turbo is maxed out. Given that boost is a 'measure' of restriction across the whole motor (intake, ports, valves, exhaust manifold, turbine section, exhaust system), if the turbine had reached choke flow, you may still be able to keep increasing boost, but realise very little in the way of power gain. On the other hand, a compressor that has reached choke flow will exhibit falling boost, super hot discharge temps, and possible over-speed.
1989 E30 - M50B28 Turbo - ZF 8 Speed
So, above means, after chock line still can find live, but very weak & primitive. Not useful and can destroy turbo due to over speed. Also, if I am not mistaken choke line means your exhaust gases speed is higher than turbine hot side impeller speed. Correct me if I am wrong.
e39 540i 6speed Supercharged,
E36 v8 m62 with m60 headers, Turbp HX-40 0.6-0.5bar or 9psi, custom exhaust & Turbo manifold, injectors 440cc, ECU Invent EMS-2, Mishimoto Intercooler and oilcooler, etc…
Yes, agree but, If you have no restriction you will never obtain back pressure. If turbo has capacity of 50lb/min and engine consumption is 70 lb/min you will get chock with no pressure and overspeed your impeller. To avoid this you should have turbo which provides more air than engine consume.
Last edited by dovlet; 02-22-2018 at 10:40 PM.
e39 540i 6speed Supercharged,
E36 v8 m62 with m60 headers, Turbp HX-40 0.6-0.5bar or 9psi, custom exhaust & Turbo manifold, injectors 440cc, ECU Invent EMS-2, Mishimoto Intercooler and oilcooler, etc…
So are we talking about putting a gt25 on an 8 liter big block chevy? This entire conversation has turned into pointless stupidity.
Bookmarks