[Solid67]

Would a custom BM3 tune be worth it for the stock turbo with FBO. It would be a 93 and E30 tune or should I just stick with the OTS versions?

[itsglen]

Originally Posted by Solid67

Would a custom BM3 tune be worth it for the stock turbo with FBO. It would be a 93 and E30 tune or should I just stick with the OTS versions?

How much do custom tunes run? I'm still not clear on how this works, you buy the BM3 tune then pay one of the BM3 tuners to tweak that tune? Thanks!

[Solid67]

Originally Posted by itsglen

How much do custom tunes run? I'm still not clear on how this works, you buy the BM3 tune then pay one of the BM3 tuners to tweak that tune? Thanks!

Yes! BM3 is really just a flash tool, so when you go to purchase it you get one free map with it. If you spend another $50, you get access to all the OTS maps. However, you could skip paying the $50 and get a custom tune done from a BM3 tuner either at their facility or remotely.

[E90ROXS]

You get 1 tune with the purchase. If you want the complete tune selection then you pay another $50.

[mike@x-ph.com]

You will see noticeable gains with a custom tune, that being said i only recommend it once you are FBO or have upgraded turbo

[Mitten3]

Originally Posted by mike@x-ph.com

You will see noticeable gains with a custom tune, that being said i only recommend it once you are FBO or have upgraded turbo

Do they tune for Pure turbos, etc.?

[kern417]

The two top tuners I see are cary jordan and f80paul. They both offer tunes for E85, meth, and bigger turbos. If you're on stock turbos and pump gas then I don't see you getting a huge improvement with a custom file. It's only worth it if you have additional hardware that the OTS maps can't take advantage of.

[itsglen]

I understand what is largely considered FBO on the N55 - but what are we considering FBO on the B58?

[kern417]

Originally Posted by itsglen

I understand what is largely considered FBO on the N55 - but what are we considering FBO on the B58?

pretty much all we need is a downpipe. intake has little to no gains and no real intercooler upgrades outside of the upgraded heat exchangers, but those aren't needed.

[itsglen]

Originally Posted by kern417

pretty much all we need is a downpipe. intake has little to no gains and no real intercooler upgrades outside of the upgraded heat exchangers, but those aren't needed.

that's what I thought too, so unlike our N55 days, with the B58 there really isn't any FBO so to speak...other than a DP. Not like we are blowing out intake pipes or anything HA.

[kern417]

Originally Posted by itsglen

that's what I thought too, so unlike our N55 days, with the B58 there really isn't any FBO so to speak...other than a DP. Not like we are blowing out intake pipes or anything HA.

Yeah, I mean really FBO means the same thing regardless. Maybe it's more accurate to say very few people are actually FBO. Our charge pipes hold up well, and the factory intake is already a cold air system pulling straight from the grille area. This is one of the first platforms I see so many people swapping to "performance" filters in the stock air box over actual aftermarket intakes.

Personally, I'm pretty satisfied with my stage 1 93oct tune. I'm more interested in switching to stage 1 E85 and running that with everything else stock.

[Solid67]

Originally Posted by kern417

Yeah, I mean really FBO means the same thing regardless. Maybe it's more accurate to say very few people are actually FBO. Our charge pipes hold up well, and the factory intake is already a cold air system pulling straight from the grille area. This is one of the first platforms I see so many people swapping to "performance" filters in the stock air box over actual aftermarket intakes.

Personally, I'm pretty satisfied with my stage 1 93oct tune. I'm more interested in switching to stage 1 E85 and running that with everything else stock.

Are you saying that a performance filter and the stock airbox is better than an aftermarket setup? I'm not trying to call you out, just legtimately trying to know because I am always down to save money, so if a drop in performance filter is good enough then I'm good with that. However, I do know that if you want a more amplified spool sound, you have to get rid of the stock airbox. My own plan is to get the FTP Intake Pipe and use it with a BMS intake.

[G.Newt]

Originally Posted by Solid67

Are you saying that a performance filter and the stock airbox is better than an aftermarket setup? I'm not trying to call you out, just legtimately trying to know because I am always down to save money, so if a drop in performance filter is good enough then I'm good with that. However, I do know that if you want a more amplified spool sound, you have to get rid of the stock airbox. My own plan is to get the FTP Intake Pipe and use it with a BMS intake.

That combo doesn't work without finding all the right couplings and parts. Ie, it's not plug and play. Look at the FTP Charge pipe thread to see how someone did it. Looked more work than it was worth though.

Personally, the math on the BMS intake means that although it might be an initial higher IAT, it's flowing way more air and the air-to-water intercooler takes care of those few degrees higher difference. Plus the sound.

[Solid67]

Originally Posted by G.Newt

That combo doesn't work without finding all the right couplings and parts. Ie, it's not plug and play. Look at the FTP Charge pipe thread to see how someone did it. Looked more work than it was worth though.

Personally, the math on the BMS intake means that although it might be an initial higher IAT, it's flowing way more air and the air-to-water intercooler takes care of those few degrees higher difference. Plus the sound.

Someone has done it and listed all the parts you need:

https://f30.bimmerpost.com/forums/sh...6&postcount=35

So the BMS will flow more air than the stock airbox with a drop in performance filter?

[Solid67]

Okay so I remember capturing an IG story from F80Paul the other day and it is a dragy slip for an m240i 93 + meth custom tune. The 100-200kmh time is 7.10 seconds. Halim's 100-200kmh in his m140i running the Stage 2 E30 OTS - Version 2.0 was 7.85 seconds. Seems like there is definitely some power left in the car.

[B58togo]

Originally Posted by Solid67

Okay so I remember capturing an IG story from F80Paul the other day and it is a dragy slip for an m240i 93 + meth custom tune. The 100-200kmh time is 7.10 seconds. Halim's 100-200kmh in his m140i running the Stage 2 E30 OTS - Version 2.0 was 7.85 seconds. Seems like there is definitely some power left in the car.

That is nuts! That’s a hair over 11 flat to 124 mph, assuming a 4 second 0-100 kph. I could be seriously content with that level of performance, all while staying on the stock turbo.

[Solid67]

To be fair the slip does show a downward slope. Not sure how much that influences the time.

[B58togo]

.68 degrees is not significant at all. That's why the Dragy reads anything under 1.00 degree as "Valid".

[Oneshot971]

Originally Posted by Solid67

Okay so I remember capturing an IG story from F80Paul the other day and it is a dragy slip for an m240i 93 + meth custom tune. The 100-200kmh time is 7.10 seconds. Halim's 100-200kmh in his m140i running the Stage 2 E30 OTS - Version 2.0 was 7.85 seconds. Seems like there is definitely some power left in the car.

Hi

Sorry but Halim's 100-200 time are in 6.xx seconds

On E30 + WMI

[Solid67]

Originally Posted by Oneshot971

Sorry but Halim's 100-200 time are in 6.xx seconds

That's on a custom E30 tune using E30 and WMI. The numbers I was referencing were on Stage 2 E30 OTS Version 2.0 (the video is on facebook in the Bootmod3 Enthusiast page). Also, the guy who got tuned by F80Paul is on 93 + meth.

[kern417]

Originally Posted by Solid67

Are you saying that a performance filter and the stock airbox is better than an aftermarket setup? I'm not trying to call you out, just legtimately trying to know because I am always down to save money, so if a drop in performance filter is good enough then I'm good with that. However, I do know that if you want a more amplified spool sound, you have to get rid of the stock airbox. My own plan is to get the FTP Intake Pipe and use it with a BMS intake.

For a daily driver 100% yes. The only one I'd swap too is the Dinan one since it is still enclosed and has a larger filter. More filter area doesn't help if you're just pulling in hot air.

Also, Halim's car has a drop-in filter

If you're running WMI then yes a custom tune would help. But if you're just stage 2 93 oct wondering if another tuner will take tenths off of your times, it won't happen. Maybe worth it if you're trying to set stock turbo records but won't be a noticeable difference for regular users.

[Solid67]

Originally Posted by kern417

For a daily driver 100% yes. The only one I'd swap too is the Dinan one since it is still enclosed and has a larger filter. More filter area doesn't help if you're just pulling in hot air.

Also, Halim's car has a drop-in filter

If you're running WMI then yes a custom tune would help. But if you're just stage 2 93 oct wondering if another tuner will take tenths off of your times, it won't happen. Maybe worth it if you're trying to set stock turbo records but won't be a noticeable difference for regular users.

I am trying to go FBO on my m240i and for 93, I would use the OTS maps. If I did do a custom tune it would be for e30. No plans to run meth.