05-02-2021, 09:06 PM | #1 |
Lieutenant
284
Rep 487
Posts |
Guys,
Please chime in with some good input here. I'm currently running TU HPFP, 200 cel DP, E50 custom tune, stock turbo. I wonder what the best route is going forward with a pure800 upgrade. Shooting for 700 ish. Since fueling is the bottleneck with just a TU, there appear to be 2 good routes in front of me. (BTW I'm not interested in adding meth in either route. I'll of course do all the right things like getting forged internals and building trans etc. to go with either.) 1. add PI and run full E85. What I like about this one is that it gives the most HP. What I don't like is the range. I'm already averaging 14 MPG currently, I can easily get that down to single digit. And with a whopping 13.7 gal tank on my 240i, I'll get less than 137 mile range. And we all know E85 stations are rarer than Tesla super chargers. So since I've only seen PI paired with E85 but does it make sense to pair E50 with PI to get more MPG? If so, how does it compare to the route below? (range-topic: I've seen ppl using the space under the trunk to store meth/water but is it feasible to use that space to extend my main tank in an elegant/safe way?) 2. Swap TU for DE2 and run E50. The benefit of this would be better MPG than E85 PI, easier bolt on installation but I think I may give up a bit horsepower. Let's hear your ideas! |
05-02-2021, 09:12 PM | #2 | |
Private First Class
51
Rep 164
Posts |
Quote:
How much power did you put down on the E50 map, and many psi did the TU support with the pure? Thanks I’m sort of in the same dilemma but I am leaning towards a larger hpfp over the port injection for the sake of simplicity |
|
Appreciate
0
|
05-02-2021, 09:13 PM | #3 | ||
Lieutenant
284
Rep 487
Posts |
Quote:
|
||
Appreciate
0
|
05-02-2021, 10:53 PM | #4 |
Major
810
Rep 1,454
Posts |
I'd probably start with building your motor.
__________________
2022 CT4-V Blackwing 6-speed
SOLD: 2016 340i xDrive 6-speed DAW v2.5 turbo E40 | Dorch S2 | VRSF DP | MST intake | AWE catback | 335is clutch | CSF heat exchanger | RK Autowerks intake manifold | Orange M Perf Brake Kit | KW Street Comfort coilovers | GTS taillights V2 |
Appreciate
0
|
05-02-2021, 11:52 PM | #5 |
Lieutenant
316
Rep 420
Posts |
The most practical setting is Dorch 2. 2 nozzles for WMI. With regular gasoline 98 / 100Ron this will give 580whp on Pure800. If you pour E30 / 40 into the tank, then it will already be 650whp. Do not need anymore. The HP50 suffers in 6th gear after 550whp.
__________________
M140IX. Turbo Pure 800 Cast.
|
Appreciate
0
|
05-04-2021, 08:03 AM | #6 |
Cheapskate
4448
Rep 4,993
Posts |
First of all, port injection doesn't require full E85. You can run whatever mix you want with whatever fuel upgrades you want. If you want to run less E with port injection to improve gas mileage, that works without an issue.
For 700whp, the Dorch will be right at it's limit. Port injection would be a better option to get you there easily. But if you can settle for 650whp or so, the dorch pump on an ethanol mix can get you there and will be a much simpler setup to install and tune compared to one with port injection. Also consider that it will be a good time to build your transmission when shooting for that much power because it typically puts you over 650-700ftlbs and that's when a lot of people experience slipping trans. |
Appreciate
0
|
05-04-2021, 09:49 AM | #7 | |
Lieutenant
284
Rep 487
Posts |
Quote:
Thank you for your reply. I'm wasn't thinking that I might get thrown in jail just because I opted for something that barely makes engineering sense. Let's say I get pure and compare PI vs DE2 limits for different E mixes..... Consider the following possible scenarios: E85: PI limit is 30% more than DE2 limit E10: PI limit is 5% more than DE2 limit E50: PI limit is (5%, 30%) more than DE2 limit (depending on the extrapolation model) Those are all made up numbers just to illustrate a point. I don't know where E50 land in (5%, 30%). Nor is 5%/30% necessarily true for E10/E85. If PI E50 limit is 27% more than DE2, it may be worth the trouble of going thru the harder setup over DE2. If PI E50 limit is 8% more than DE2, it may not be. It's not about what I can do, it's about what makes the most sense for me to do. |
|
Appreciate
0
|
05-04-2021, 11:19 AM | #8 |
Novice
303
Rep 695
Posts |
I was thinking of getting pure800s in the future to have a more reliable and more capable turbo in the long run with an E30 mix. Would I need to get a "stage" upgrade for my transmission or would I be able to run it w/ xHP until I can purchase a "stage" upgrade for the ZF8 speed
|
Appreciate
0
|
05-05-2021, 09:00 AM | #9 | |
Cheapskate
4448
Rep 4,993
Posts |
Quote:
But like I said, if you're dead set on 700whp then don't lean on a dorch pump to get you there. You'll need PI regardless. |
|
Appreciate
1
lixiang7349283.50 |
05-05-2021, 12:19 PM | #10 |
Major
809
Rep 1,369
Posts |
Wow, 14 mpg? I’m getting 20 and I don’t exactly have a light foot.
__________________
2017 M240i/ ZF8 Pure Drivetrain Solutions Stage 1 & torque converter/xHP/ DAW Ultra Flow/ DS2/ Nostrum injectors/ E40 Doug Newton tuned/ ER DP/ Remus axle back/ BMS intake/ FTP CP/ M Perf LSD
|
Appreciate
1
WolfGTI716.00 |
05-05-2021, 06:31 PM | #11 |
Lieutenant
284
Rep 487
Posts |
Spool FX-180 Upgraded High Pressure Pump [B58]
I just noticed that spool has even more capacity over de2. 1.7 vs 1.6. How are people's experience with it? Mostly positive? This may be inching closer to what pi can do? |
Appreciate
0
|
05-06-2021, 08:16 AM | #12 |
Cheapskate
4448
Rep 4,993
Posts |
PI will always have more headroom. A DI only system cannot achieve what PI can do.
|
Appreciate
0
|
05-06-2021, 10:05 PM | #13 |
Lieutenant
187
Rep 458
Posts |
This is gonna be a slightly off topic question but has anyone ran port injection/injectors to spray meth?
__________________
2019 M240i M Performance Edition / xDrive / ZF8 / BM3 Stg 2+ E30 / xHP Stg 3 / Dorch Stg 2 HPFP / Evolution Racewerks Catless Downpipe / MPPSK Exhaust / FTP Drop in Filter / FTP Intake Pipe / FTP Chargepipe / NGK 94201 Spark Plugs .022 / Michelin PS4S - 225/35/19 + 245/30/19
|
Appreciate
0
|
05-07-2021, 07:31 AM | #14 |
Private First Class
51
Rep 164
Posts |
|
Appreciate
0
|
05-07-2021, 07:41 AM | #16 | |
Cheapskate
4448
Rep 4,993
Posts |
Quote:
|
|
Appreciate
0
|
05-07-2021, 08:02 AM | #17 | ||
Lieutenant
284
Rep 487
Posts |
Quote:
|
||
Appreciate
0
|
05-07-2021, 10:41 AM | #18 | |
Lieutenant
187
Rep 458
Posts |
Quote:
__________________
2019 M240i M Performance Edition / xDrive / ZF8 / BM3 Stg 2+ E30 / xHP Stg 3 / Dorch Stg 2 HPFP / Evolution Racewerks Catless Downpipe / MPPSK Exhaust / FTP Drop in Filter / FTP Intake Pipe / FTP Chargepipe / NGK 94201 Spark Plugs .022 / Michelin PS4S - 225/35/19 + 245/30/19
|
|
Appreciate
0
|
05-07-2021, 12:26 PM | #19 | ||
Cheapskate
4448
Rep 4,993
Posts |
Quote:
- meth is higher octane - meth has better cooling properties - no concerns with calculating a mix, reduced MPGs, etc Quote:
the primary benefit of a meth nozzle is you're not relying on an actuator that can fail, get stuck open, etc. |
||
Appreciate
1
Solid67187.00 |
05-07-2021, 12:56 PM | #20 | |
Lieutenant
284
Rep 487
Posts |
Quote:
since it's port injected, i'd guess it'll be injecting 100% meth vs 50/50 mixed with water? |
|
Appreciate
0
|
05-07-2021, 01:02 PM | #21 |
Cheapskate
4448
Rep 4,993
Posts |
It can inject whatever you want. Most people either use M1 (methanol) or Ignite (Ethanol).
|
Appreciate
0
|
05-07-2021, 01:18 PM | #22 | |
Lieutenant
284
Rep 487
Posts |
Quote:
|
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|