F80 M3 S55 Single Turbo Build

[chetrickerman]

Originally Posted by DaiLyG80

Also weights saving, I wonder how much did you shave the weights from going single turbo?

Unfortunately I didnt do before and after weights.

[cmcintosh339]

Originally Posted by chetrickerman

Good question. So usually OEM or aftermarket companies will use twin turbos since two turbos usually have a lower polar moment of inertia than one larger turbo, which means the two smaller turbos should have faster transient response and spool up quicker while having the same power potential as a single large turbo.

With the advent of the Borg Warner EFR turbos, they utilize a Gamma-Ti turbine wheel which has half of the inertia compared the exact same size turbine wheel made out of Inconel or Mar-M. This dramatically affects transient response, and with their redesigned compressor wheel that flows a lot more, I chose to go this route.

The sound, response, power and simplicity this setup produces is found no where else on the market, hence why I decided to make it myself.

Understood, thanks for taking the time to explain it!!

[chetrickerman]

Something new is coming

[Taylorsherk]

Chet, you putting in some new hvac ducts in the house???

[wheela]

Originally Posted by chetrickerman

Something new is coming

Wow, is that whole thing milled from one solid chunk of aluminum?

[chetrickerman]

Originally Posted by wheela

Wow, is that whole thing milled from one solid chunk of aluminum?

Yes sir
I wish this video would embed
http://youtube.com/shorts/pkSPLosVGHo?feature=share

[wheela]

Originally Posted by chetrickerman

Yes sir
I wish this video would embed
http://youtube.com/shorts/pkSPLosVGHo?feature=share

Nice, thanks for sharing that vid! I'm excited to watch this build progress. I like that you're building around an internally gated EFR, and using the oem boost control.

[chetrickerman]

The first ever Wagner single turbo intercooler is here! The build quality is superb, you get what you pay for from these guys. Installing tomorrow and im looking forward to lower pressure drop and more stable charge temperatures.

[F30_320D_UK]

Well, that’s just beautiful right there!

[chetrickerman]

It's installed! I had to extend the charge pipe a little but the increased core size really fills the engine bay better and I can already feel a difference with response during normal driving. Charge temps are 10-12*F cooler during normal driving compared to the OEM unit.

[slaughter.mode]

What a thread. Thanks chetrickerman for sharing.

I recently blew my motor so I'm getting a new one installed and strongly considering going down the single turbo path as well. I am being offered a killer deal on a BigBoost (BW9280) kit that's hard to pass up making it even more lucrative. I am really hoping you can weigh in on my fueling upgrade shopping list. FYI, this is a daily driver and I'm aiming for 700whp and I don't care to go above that. Simplicity and reliability are paramount. Here's my list:

• Dorch EU5 Fuel Injectors
• Dorch Lift Kit
• PrecisionRaceworks LPFP (may not need this)

I have MHD + the MHD CAN Ethanol Content Analyzer for a previous FlexFuel tune I was running with the twin turbo setup but if I can achieve 700whp with the 9280 + these injectors + lift kit on ACN91 then I'll happily walk away from E85 all together.

Really appreciate any feedback. Cheers.

[chetrickerman]

Originally Posted by Corn Mode

What a thread. Thanks chetrickerman for sharing.

I recently blew my motor so I'm getting a new one installed and strongly considering going down the single turbo path as well. I am being offered a killer deal on a BigBoost (BW9280) kit that's hard to pass up making it even more lucrative. I am really hoping you can weigh in on my fueling upgrade shopping list. FYI, this is a daily driver and I'm aiming for 700whp and I don't care to go above that. Simplicity and reliability are paramount. Here's my list:

• Dorch EU5 Fuel Injectors
• Dorch Lift Kit
• PrecisionRaceworks LPFP (may not need this)

I have MHD + the MHD CAN Ethanol Content Analyzer for a previous FlexFuel tune I was running with the twin turbo setup but if I can achieve 700whp with the 9280 + these injectors + lift kit on ACN91 then I'll happily walk away from E85 all together.

Really appreciate any feedback. Cheers.

Thank you!

That fuel system list looks great. You definitely need the LPFP because the stock LPFP tends to run out of flow around 650 whp on E85.

I dont see that setup making 700 on 91.

[slaughter.mode]

Originally Posted by chetrickerman

Thank you!

That fuel system list looks great. You definitely need the LPFP because the stock LPFP tends to run out of flow around 650 whp on E85.

I dont see that setup making 700 on 91.

I’ll aim for 600whp then. I think it should be good for that. I wonder why these EU5s say they can handle 900whp? I know a few folks who claim they are pushing 800s with them and no supplemental PI but I don’t want to push it again and end up in the same boat with a blown motor. Appreciate the feedback!

[chetrickerman]

Originally Posted by Corn Mode

I’ll aim for 600whp then. I think it should be good for that. I wonder why these EU5s say they can handle 900whp? I know a few folks who claim they are pushing 800s with them and no supplemental PI but I don’t want to push it again and end up in the same boat with a blown motor. Appreciate the feedback!

No worries. The EU5's can handle 800-840 whp on E85 with the lift kit and upgraded LPFP.

[slaughter.mode]

Originally Posted by chetrickerman

No worries. The EU5's can handle 800-840 whp on E85 with the lift kit and upgraded LPFP.

I’m scared of E after my latest conundrum. What’s your thoughts on the Bend Calibration in line fuel filter? I never ran one on this build or my F80 (ran 200k miles on that one) and had no fueling issues but something tells me the E quality where I live isn’t what it was and maybe I need it this time.

[chetrickerman]

Originally Posted by Corn Mode

I’m scared of E after my latest conundrum. What’s your thoughts on the Bend Calibration in line fuel filter? I never ran one on this build or my F80 (ran 200k miles on that one) and had no fueling issues but something tells me the E quality where I live isn’t what it was and maybe I need it this time.

The Bend Calibration fuel filter kit is probably the best fuel filter on the market.

[McBobby Jr]

Originally Posted by Corn Mode

I’m scared of E after my latest conundrum. What’s your thoughts on the Bend Calibration in line fuel filter? I never ran one on this build or my F80 (ran 200k miles on that one) and had no fueling issues but something tells me the E quality where I live isn’t what it was and maybe I need it this time.

Check with other people in your community that are running pump E85 and see which stations are most consistent and or have no issues. I see you’re in Cali, from what I’ve heard not too many issues with the pump E85 over there and it’s relatively consistent. If you’re worried about consistency with the ethanol content, than get an ethanol analyzer and a flex fuel tune. Anything E50+ will net you an easy 700whp on the proper fuel system. How was your experience with E85?

[slaughter.mode]

Originally Posted by McBobby Jr

Check with other people in your community that are running pump E85 and see which stations are most consistent and or have no issues. I see you’re in Cali, from what I’ve heard not too many issues with the pump E85 over there and it’s relatively consistent. If you’re worried about consistency with the ethanol content, than get an ethanol analyzer and a flex fuel tune. Anything E50+ will net you an easy 700whp on the proper fuel system. How was your experience with E85?

Yeah this is my first time having issues but I'm new to SoCal from NorCal. The fuel quality here is way worse. I'd never see more than 80-81% on my ethanol content analyzer with the E85 here. I think I'm just going to stick with a FlexFuel tune that maximizes at E50 with the setup I proposed above. Hopefully this time around it doesn't do me dirty. I'll need to log the injectors weekly, too. Not going to end up with a blown engine again.

[McBobby Jr]

Originally Posted by Corn Mode

Yeah this is my first time having issues but I'm new to SoCal from NorCal. The fuel quality here is way worse. I'd never see more than 80-81% on my ethanol content analyzer with the E85 here. I think I'm just going to stick with a FlexFuel tune that maximizes at E50 with the setup I proposed above. Hopefully this time around it doesn't do me dirty. I'll need to log the injectors weekly, too. Not going to end up with a blown engine again.

So in your case, E85 caused a blown engine?

[slaughter.mode]

Originally Posted by McBobby Jr

So in your case, E85 caused a blown engine?

No, my neglegence to check my injector ‘health’ did. Would they have failed this bad running stock maps and petrol? Probably not to this degree. Running E85 pushes the injectors to work way harder and I should’ve swapped or cleaned them more often.

[Wanted_M]

Originally Posted by chetrickerman

It's installed! I had to extend the charge pipe a little but the increased core size really fills the engine bay better and I can already feel a difference with response during normal driving. Charge temps are 10-12*F cooler during normal driving compared to the OEM unit.

That IC is THICK, big ol' brick lol. Any issues with IC hitting the hood?

[chetrickerman]

Originally Posted by Wanted_M

That IC is THICK, big ol' brick lol. Any issues with IC hitting the hood?

It sure is thicc. It's a very tight fit, I did notch the hood a little to prevent any rubbing.