[550i_scorp]

Thanks for your reply,
You mean no need to program/retune the car for the new turbos? Just plug-and-play?

[747flyboy]

I should have been more detailed. According to Garrett Honeywell (see link) https://garrett.honeywell.com/produc...866&p=UNLINKED
These turbos are rated at 514 HP in comparison to 402 HP for stock 550i turbos. You are correct on the plug and play and should obtain 60WHP easy and up to 100WHP with a proper comparable Alpina tune.

[550i_scorp]

Awesome website with good details, thanks for the link.
Now, any price drop or offer? Don't kow to send you a pm

[mikekilpatrick]

Turbos came in today, just have to install the M5 downpipes and these turbos and see if bms can work with me to tie all of this in with the Dinan hardware to make a mutt fast car! I think my 12.8 at track will be greatly reduced. Nice doing business with you!

[747flyboy]

Hello Mike,

I am glad they are yours. You are going to be very pleased just bolt on and obvious performance increase. I wish Terry would write JB4 N63 code for 3.5 BAR TMAP sensors to fully explore potential of ALPINA Turbos. Our cars come standard with 2.5 BAR (TMAP sensors on the Inter-coolers) hence limiting boost to 20 PSI, however it takes much less work to achieve same power giving a better rate (seconds) to achieve same results. I recently installed ALPINA Inter -Coolers, however, had to remove 3.5 BAR for original 2.5 BAR since ECU flips Drive Train Malfunction. I think you have the ideal setup DINAN with JB4 and may not be limited to 20 PSI if you change TMAPS to 3.5 BAR (ALPINA and M5 share same TMAP part number). Check with DINAN and let us know.

[SchillerM]

747, did you by chance take a picture of stock vs alpina ICs? Would love to see the difference.

Also, isnt 2,5 BAR = 36PSI? Why would 20 be limit? I think someone said thier Dinan Stage 5 tune was 22PSI?
Matt

[747flyboy]

you are absolutely correct, around 36.7 PSI or so. According to Terry from Burger Tuning states around 20 PSI is limit +/-. I am not sure how it triggers if it is total manifold pressure from both banks. I apologize for not giving scientific answer. I will take photos for OEM IC's and post ASAP.

[mikekilpatrick]

Originally Posted by SchillerM

747, did you by chance take a picture of stock vs alpina ICs? Would love to see the difference.

Also, isnt 2,5 BAR = 36PSI? Why would 20 be limit? I think someone said thier Dinan Stage 5 tune was 22PSI?
Matt

I bought the turbos from him so when I go to do the install, I will take pics of the blades. The outside casings should be almost identical. Just sent them off to pureturbos for a once over and rebuild just to be safe. They looked to be in excellent condition, but before I install a permanent upgrade on the car, I would rather pay a few hundred dollars a piece to make sure all the seals are new and they are balanced perfectly. Track runs can magnify any weakness.

Was not necessary, but just a precaution to give me a piece of mind.

[SchillerM]

Originally Posted by mikekilpatrick

I bought the turbos from him so when I go to do the install, I will take pics of the blades. The outside casings should be almost identical. Just sent them off to pureturbos for a once over and rebuild just to be safe. They looked to be in excellent condition, but before I install a permanent upgrade on the car, I would rather pay a few hundred dollars a piece to make sure all the seals are new and they are balanced perfectly. Track runs can magnify any weakness.

Was not necessary, but just a precaution to give me a piece of mind.

I'd love to know difference between OEM N63, Alpina, M5, and Pure Turbo N63 upgrade. Does Pure Turbo so any metrics on the rebuild?
I asked the Dinan guys about their turbo upgrade and said they are essentially same as the Alpina ones. I saw a set of M5 turbos for sale but didn't know if they would be a worthwhile upgrade or not.

The turbo side of the Alpina intercooler seems like it's nicely shaped vs stock, wonder if that helps.
Matt

[747flyboy]

It is all about design of compressor geometry. I also looked at M5
Turbo upgrade to find exhaust manifold change required. M5 exhaust manifold are cross mounted meaning exhaust cycle for cylinder 1 4 6 7 drive left turbo turbine and exhaust cycle for cylinder 2 3 5 8 drive right right turbo turbine. Left and right turbos are counter rotating because of firing cycle. This method compensates for the large 60mm M5 compressors at low range RPM, it is brilliant. The new Alpina Turbo compressors have the identical 60mm compressor with a slight geometry design difference adding an extra exducer (smaller lower pressure compressor wheel which is continually spooled) and uses same exhaust manifold per bank as all N63 engines. The older Alpina turbos have same design as newer Alpina's with the exception compressor diameter is 56mm. I don't know much about Pure Turbos and I reserve my opinion on their design. You can change to M5 Turbos, however, the process entails exhaust manifold change Turbo cooling is slightly different (extra plumping required) and to mention software to recognize the counter rotating spin of compressors. OEM N63 turbos are plain Jane 22mm turbine single shaft and a 56mm single compressor meaning Alpina Turbos generate higher compression ratio. You can research this information from various sources on line. I hope it helps.
:J

[mikekilpatrick]

Yes I spoke to Dinan as well and if you wanted to go with their stage 6 tune, alpina turbos would work with it.

I am running a hybrid Dinan hardware with BMW stage 2 beta tune on map two which is a 8psi boost I believe. Ran in the 12's with crappy octane booster but going to go back before snow hits and test with torco. I plan on getting a dyno before and after turbo and M5 downpipes upgrade

[mikekilpatrick]

Just got the invoice and the Alpina turbos were rebuilt by Pure Turbo. I will post pics of them in the engine section when they arrive. And when I install them, I will take pics of the OEM propellers to show the comparison for all of you.

...Mike

[747flyboy]

Greetings Mike,

All you need now 3.5 BAR TMAP sensors and you are north of 600WHP. Did you see latest dyno with Alpina at 562 with 2.5 BAR Sensors? Should have gotten more but tires were beyond gone. I hope the invoice from pure was gentle on your pocket...Joe

[mikekilpatrick]

Just to be clear, there was nothing wrong with these turbos when they arrived. The seller was AWESOME and shipped exactly what I purchased. I sent the turbos off to be rebuilt STRICTLY as a precautionary measure. This way, if I decided to go with a Dinan Stage 6 tune at dealer, Alpina turbos were approved by Dinan as a recommended replacement for the turbos they took off the market. By having them rebuilt, I get a 1 year warranty and if something went wrong, BMW could not say I installed non certified turbos. I can prove they were in PERFECT working condition based on a professional turbo rebuilding facility.

This did not NEED to be done, it was a choice I made to take insurance out basically since I have 2 years of CPO left on car.

$350 per turbo for the rebuild. $700 total and no sales tax since out of state. Cost $50.00 to ship to CA from NJ.

...Mike

[mikekilpatrick]

Pure Turbos said to me today that the 2 turbos were from low mileage car and in good shape, not that I doubted 747flyboy for a second as he a good guy! As I said, this was done as an insurance policy since these will now have a warranty of 1 year. So once I install them, god forbid anything happens, I can prove they were inspected and rebuilt before install. Which was the whole point of having them rebuilt. Just an insurance policy since the car has 2 more years of warranty.

Point being, if this seller has anything up for sale, HIS STUFF IS in EXCELLENT Condition! Great guy! Great Communication! And awesome stuff for sale! You can be confident you will get exactly what is advertised gentlemen!

[747flyboy]

[Secret_Asian]

Originally Posted by SchillerM

747, did you by chance take a picture of stock vs alpina ICs? Would love to see the difference.

Also, isnt 2,5 BAR = 36PSI? Why would 20 be limit? I think someone said thier Dinan Stage 5 tune was 22PSI?
Matt

Yes its 36 psi but 14.7 is atmosphere + 20 psi = 34.7 right around the limit. So 20 psi of boost is 20 psi above atmospheric pressure

[mikekilpatrick]

Just got them back from Pure Turbo. MAN they do NICE work! Install as soon as weather permits.