[F30IDR]

Hey guys so after a while of looking over forums I was trying to figure out which pump would work for me. I'm just trying to run bm3 stage 2+ e30 multimap and a hpfp is required hardware. Can I get away with a stage 1 pump without it crashing. I would much rather buy the stage 1 since I should be upgrading cars in about a year. Thank you (2015 335i)

[thejeremyman9]

Stock turbo?

The main other consideration is that most people run E50 or so on that map. You might be approaching stage 1 limit depending on what E% you run.

[F30IDR]

Originally Posted by thejeremyman9

Stock turbo?

The main other consideration is that most people run E50 or so on that map. You might be approaching stage 1 limit depending on what E% you run.

yeah brother stock turbo I know lots of people get the stage 2 pump but they usually have a PS2 turbo on the setup I just plan on running the bm3 stage 2 + multimap and I'm hoping I'd be fine with a stage 1 pump as the car does feel like it's starving from fuel with the stock pump.

[n55david]

get the stage 2

[F30IDR]

Originally Posted by Phantom10R

get the stage 2

you don't think I could get away with a stage 1? Some details I left out was I'd be buying a brand new stage 1 for half the price and I'd be keeping the car for another year max. Any info you know is helpful thank you

[5w20]

Originally Posted by F30IDR

Hey guys so after a while of looking over forums I was trying to figure out which pump would work for me. I'm just trying to run bm3 stage 2+ e30 multimap and a hpfp is required hardware. Can I get away with a stage 1 pump without it crashing. I would much rather buy the stage 1 since I should be upgrading cars in about a year. Thank you (2015 335i)

If you're 100% sure and certain you won't be upgrading past that, get the stage 1. That's what I have and don't have an issue with running that tune on a 50% 93 octane and 50% E85 blend. At worst case scenario the blend works out to be roughly E35 and best case scenario of E47.

[mike@x-ph.com]

Originally Posted by 5w20

If you're 100% sure and certain you won't be upgrading past that, get the stage 1. That's what I have and don't have an issue with running that tune on a 50% 93 octane and 50% E85 blend. At worst case scenario the blend works out to be roughly E35 and best case scenario of E47.

+1

we have the stage 1 dorch on a 15% sale this week

[Boostedphil698]

Dorch just announced a lift kit for the N55 which will flow more than stage 2. So I'd wait for that if you can or need it.

[johnung]

Originally Posted by F30IDR

yeah brother stock turbo I know lots of people get the stage 2 pump but they usually have a PS2 turbo on the setup I just plan on running the bm3 stage 2 + multimap and I'm hoping I'd be fine with a stage 1 pump as the car does feel like it's starving from fuel with the stock pump.

You should be able to run Bootmod3 Stage2+ E30 tune no problem with the Dorch Stage1 HPFP. Typically you'll want to put E40/E50 in the tank. Just give Dorch a call and ask them to verify. Also get xHP to avoid any torque limits with the tune.

[imperfectluck]

Currently running a stage 1 here. I also contemplated when it was first released if I were going to do the stage 2 but settled on 1 and also running the stage 2+ map and I just 50/50 fill up every time. HPFP hasn't had any issues and since you're planning on shifting cars in a year, if you want to just get some fun within this last year of ownership, get the stage 1 and call it a day. If you were going behind the stock turbo then I could see the contemplation between the two.

[F30IDR]

Originally Posted by imperfectluck

Currently running a stage 1 here. I also contemplated when it was first released if I were going to do the stage 2 but settled on 1 and also running the stage 2+ map and I just 50/50 fill up every time. HPFP hasn't had any issues and since you're planning on shifting cars in a year, if you want to just get some fun within this last year of ownership, get the stage 1 and call it a day. If you were going behind the stock turbo then I could see the contemplation between the two.

Really appreciate this reply brother I think I am going to go ahead with the stage 1 pump a part of me can't pass up the 500 dollar deal brand new as well. I'm assuming that's around e50 correct on the e30 map? Do you feel any gains/better driving going higher up in ethanol?

[imperfectluck]

Originally Posted by F30IDR

l
Really appreciate this reply brother I think I am going to go ahead with the stage 1 pump a part of me can't pass up the 500 dollar deal brand new as well. I'm assuming that's around e50 correct on the e30 map? Do you feel any gains/better driving going higher up in ethanol?

Absolutely agree at that price and I don't feel much of a difference between e30 and 50 but what I can say I do feel is when the e mixture starts to dwindle at around half a tank, I catch myself at times gassing back up at the half tank mark as I feel the difference when going half to quarter tank

[5w20]

Originally Posted by mike@x-ph.com

+1

we have the stage 1 dorch on a 15% sale this week

What about a Dorch lift kit presale? Any sales for the stage 2 pump?

[mike@x-ph.com]

Originally Posted by 5w20

What about a Dorch lift kit presale? Any sales for the stage 2 pump?

Dorch is not extending the sale for stage 2 to their dealers as they do not have enough.

we are only offering the discount on the stage 1

[johnung]

Originally Posted by Boostedphil698

Dorch just announced a lift kit for the N55 which will flow more than stage 2. So I'd wait for that if you can or need it.

FYI- The Dorch F30 N55 lift kit costs $800 and can be added to either their Dorch Stage1 or Dorch Stage2 HPFPs to increase their flow by 49%. The Stage2 only costs $500 more than the Stage1. So it would cost $300 to get a Stage1 + Lift Kit versus just buying a Stage2 (which you could add a lift kit to if necessary later).

Dorch Stage1 supports up to 530hp on 93 Octane (E10) while Dorch Stage2 supports up to 650hp. (500hp on E85) You would need a big turbo upgrade to require a Dorch Lift Kit.

[imperfectluck]

Originally Posted by johnung

FYI- The Dorch F30 N55 lift kit costs $800 and can be added to either their Dorch Stage1 or Dorch Stage2 HPFPs to increase their flow by 49%. The Stage2 only costs $500 more than the Stage1. So it would cost $300 to get a Stage1 + Lift Kit versus just buying a Stage2 (which you could add a lift kit to if necessary later).

Dorch Stage1 supports up to 530hp on 93 Octane (E10) while Dorch Stage2 supports up to 650hp. (500hp on E85) You would need a big turbo upgrade to require a Dorch Lift Kit.

Funny, I've had the stage 1 since release and did see the current sale price of the stage 2 and said because I've gone so far with my car performance and looks wise, I don't plan on getting rid of her anytime soon so I may just take the plunge for the stage 2 at the $1300, try to sell the stage 1 and possibly pick up an upgraded turbo once lead times improve in the near future. The KW V2 and the steal on the LSD was the point of no turning back for me.

[thejeremyman9]

Originally Posted by imperfectluck

Absolutely agree at that price and I don't feel much of a difference between e30 and 50 but what I can say I do feel is when the e mixture starts to dwindle at around half a tank, I catch myself at times gassing back up at the half tank mark as I feel the difference when going half to quarter tank

People run E50 on the stage 2+ map to support the timing targets. You can also tell from the fuel trims that the map was designed for and works well with more than 30% ethanol.

Also, i have no idea what you mean about your e mixture dwindling at half a tank, the E% in your tank should be basically constant between fillups unless you had significant separation between the ethanol and gasoline in your tank which should not happen, especially if the car doesnt sit for extended periods of time without being driven.

[imperfectluck]

Originally Posted by thejeremyman9

People run E50 on the stage 2+ map to support the timing targets. You can also tell from the fuel trims that the map was designed for and works well with more than 30% ethanol.

Also, i have no idea what you mean about your e mixture dwindling at half a tank, the E% in your tank should be basically constant between fillups unless you had significant separation between the ethanol and gasoline in your tank which should not happen, especially if the car doesnt sit for extended periods of time without being driven.

Makes sense in relation to the fuel trims. And I agree with you in the sense that minus a small percentage of summer to winter change from the pump itself, it should feel consistent through the entire tank so I'm sure I'm assuming incorrectly and other things such as the air being colder here is more likely factoring in. Just noticed on a few occasions when I got down to the half tank to the quarter the car felt a touch different but I'll just grab some logs instead of sitting here speculating without proper data to support.

[AmuroRay]

ZM2

[AmuroRay]

Originally Posted by mike@x-ph.com

+1

we have the stage 1 dorch on a 15% sale this week

Talk dirty to me.

[mike@x-ph.com]

Originally Posted by AmuroRay

Talk dirty to me.

[johnung]

Originally Posted by thejeremyman9

People run E50 on the stage 2+ map to support the timing targets. You can also tell from the fuel trims that the map was designed for and works well with more than 30% ethanol.

Also, i have no idea what you mean about your e mixture dwindling at half a tank, the E% in your tank should be basically constant between fillups unless you had significant separation between the ethanol and gasoline in your tank which should not happen, especially if the car doesnt sit for extended periods of time without being driven.

That makes sense. BM3 tech support told me that you can run more than E30 with the Stage2+ E30 tune, but that there's no advantage to running more than E50.