MHD+ for Supra and Gen 2 B58

[ColonelAdama]

I apologize if this has been answered 100 times (I wasn't really able to determine a clear answer from what else I was able to find other than "it can sometimes help with ethanol blends")

Would a HPFP + Injectors be worth it for a MHD E40 custom tune or is the power to be had negligible? I'm planning to unlock in Miami in June and run MHD OTS until I'm ready for a custom map, but if HPFP+Injectors gives any meaningful benefit I'll hold off on the latter until I've upgraded those. (I plan to max out DI on an upgraded turbo way down the road anyways, so I had already planned to get a HPFP/Injectors regardless, this just determines if I get them sooner rather than later.)

While fuel upgrades can be used with OTS (you need to select them under flash options), you won't see any power gains. Don't upgrade anything without having MHD on the car, can't use the upgrades on stock tune.

I would recommend DS25 hpfp and S58 injectors if you want to run E85 on stock turbo + a custom tune by me

Later this can support something like a Pure800 at lower E blend E40-E50

Sponsored

 

[jmikes]

While fuel upgrades can be used with OTS (you need to select them under flash options), you won't see any power gains. Don't upgrade anything without having MHD on the car, can't use the upgrades on stock tune.

I would recommend DS25 hpfp and S58 injectors if you want to run E85 on stock turbo + a custom tune by me

Later this can support something like a Pure800 at lower E blend E40-E50

Yes that's the plan, I want to run OTS for some time while I research potential tuners (and determine if I'm happy with OTS, at which point I'd save HPFP/Injectors/Custom tune until turbo upgrade.)

I wouldn't do HPPF+Injectors unless I decide on getting a custom tune on the stock turbo, and only if there's a noteworthy benefit (either a halfway decent power bump or full E85 support for the same or better power as E40), Can a HPFP+Injectors really support full E85 on stock turbo without any power loss though? I'd love to not have to deal with blending anymore lol.

 

[ColonelAdama]

Can a HPFP+Injectors really support full E85 on stock turbo without any power loss though? I'd love to not have to deal with blending anymore lol

Yes. That combo is rated for 600whp on E85 per the dorch website. Stock turbo wont exceed 550.

And yes you can get a little more power on E85 compared to e50. Nothing crazy though as the stock turbo becomes the bottleneck pretty quickly. I wouldnt say the $2k+ fuel upgrade is worth it over e50 stock fueling just for the power, mostly the convenience and future proofing.

Happy to tune it for you, I am actually about to do one exactly like this. Ds25 s58 inj full e85 stock turbo

 

[jmikes]

Yes. That combo is rated for 600whp on E85 per the dorch website. Stock turbo wont exceed 550.

Of course, for me full E85 would mainly be a quality of life thing over having to do E-blending anymore than a chasing crazy power numbers thing.

Basically, I want to switch from JB4 to MHD now that FEMTO is in Miami. If I don't fall in love with the OTS E40 map, I'll want to get a custom tune. If there is a noticeable power and/or smoothness benefit to getting said custom tune with a HPFP+Injectors over not upgrading them, then I'll get those upgraded sooner rather than waiting for when I want to upgrade the turbo. Definitely not expecting anywhere close to 550 off that, nor do I have an explicit power goal, just a "butt dyno is happy" goal!

 

[ColonelAdama]

Of course, for me full E85 would mainly be a quality of life thing over having to do E-blending anymore than a chasing crazy power numbers thing.

Basically, I want to switch from JB4 to MHD now that FEMTO is in Miami. If I don't fall in love with the OTS E40 map, I'll want to get a custom tune. If there is a noticeable power and/or smoothness benefit to getting said custom tune with a HPFP+Injectors over not upgrading them, then I'll get those upgraded sooner rather than waiting for when I want to upgrade the turbo. Definitely not expecting anywhere close to 550 off that, nor do I have an explicit power goal, just a "butt dyno is happy" goal!

There is a noticeable difference just from E40 OTS to E50 custom too before hpfp+inj

I tell people just to skip paying hundreds for the OTS/super license when I can do custom for near the same $. Just need a flash/logging license.

MHD is well worth it over JB4 of course

 

[swrdply400mrelay]

There is a noticeable difference just from E40 OTS to E50 custom too before hpfp+inj

I couldn't find the answer to this, but there a good amount of power gains going hybrid turbo + HPFP but WITH OUT upgrading injectors? Would like to be able to flash to stock and drive it without having to uninstall parts. Thanks!

 

[ColonelAdama]

I couldn't find the answer to this, but there a good amount of power gains going hybrid turbo + HPFP but WITH OUT upgrading injectors? Would like to be able to flash to stock and drive it without having to uninstall parts. Thanks!

Yeah you probably could, but The injectors are almost 1/10 the cost of the hpfp so may as well lol
https://www.fcpeuro.com/products/bmw-direct-fuel-injector-bosch-13538671991

Really the hpfp need to be tuned for otherwise fuel pressure may be all over the place. If injectors arent tuned for, trims will be all over the place too.

 

[Twisted Tuning]

I apologize if this has been answered 100 times (I wasn't really able to determine a clear answer from what else I was able to find other than "it can sometimes help with ethanol blends")

Would a HPFP + Injectors be worth it for a MHD E40 custom tune or is the power to be had negligible? I'm planning to unlock in Miami in June and run MHD OTS until I'm ready for a custom map, but if HPFP+Injectors gives any meaningful benefit I'll hold off on the latter until I've upgraded those. (I plan to max out DI on an upgraded turbo way down the road anyways, so I had already planned to get a HPFP/Injectors regardless, this just determines if I get them sooner rather than later.)

Of course, for me full E85 would mainly be a quality of life thing over having to do E-blending anymore than a chasing crazy power numbers thing.

Basically, I want to switch from JB4 to MHD now that FEMTO is in Miami. If I don't fall in love with the OTS E40 map, I'll want to get a custom tune. If there is a noticeable power and/or smoothness benefit to getting said custom tune with a HPFP+Injectors over not upgrading them, then I'll get those upgraded sooner rather than waiting for when I want to upgrade the turbo. Definitely not expecting anywhere close to 550 off that, nor do I have an explicit power goal, just a "butt dyno is happy" goal!

realistically there is no point in adding injectors and HPFP to an OTS map since the OTS map is calibrated for OEM parts, it will not automatically make more power. So really if you want to run the OTS, do so on OEM fueling. When you are ready for a custom tune, then worry about getting the injectors and HPFP if thats truly the route you want to go. Wait to upgade the fueling for when you get the turbo upgrade, and do it all at once.

I couldn't find the answer to this, but there a good amount of power gains going hybrid turbo + HPFP but WITH OUT upgrading injectors? Would like to be able to flash to stock and drive it without having to uninstall parts. Thanks!

yes, turbo plus HPFP there are gains because the stock injectors will flow 600-700whp depending on fuel used. flash stock on an upgraded turbo? you can, but not recommended. also with an HPFP you can run the stock tune. because HPFP calibration is different from stock.

Unless you mean flash stock like a valet map, then you would just use MHD flash option for the HPFP you have on the stock flash for it run.

 

[swrdply400mrelay]

yes, turbo plus HPFP there are gains because the stock injectors will flow 600-700whp depending on fuel used. flash stock on an upgraded turbo? you can, but not recommended. also with an HPFP you can run the stock tune. because HPFP calibration is different from stock.

Unless you mean flash stock like a valet map, then you would just use MHD flash option for the HPFP you have on the stock flash for it run.

Can I run stock map with hybrid turbo if I stay out of boost?

And do you mean I can’t run stock tune on HPFP because the calibration is different? Appreciate it!

 

[Twisted Tuning]

Can I run stock map with hybrid turbo if I stay out of boost?

And do you mean I can’t run stock tune on HPFP because the calibration is different? Appreciate it!

yes, on a hybrid you can run stock tune. you will likely get a code for the PCV heater though because most hybrids don't come with provisions for its connection. And correct, stay out of boost.

An upgraded HPFP will not operate correctly on stock tune. however with MHD you can select the flash option with the stock tune to run the HPFP.

 

[jmikes]

realistically there is no point in adding injectors and HPFP to an OTS map since the OTS map is calibrated for OEM parts, it will not automatically make more power. So really if you want to run the OTS, do so on OEM fueling. When you are ready for a custom tune, then worry about getting the injectors and HPFP if thats truly the route you want to go. Wait to upgade the fueling for when you get the turbo upgrade, and do it all at once.

yes, turbo plus HPFP there are gains because the stock injectors will flow 600-700whp depending on fuel used. flash stock on an upgraded turbo? you can, but not recommended. also with an HPFP you can run the stock tune. because HPFP calibration is different from stock.

Unless you mean flash stock like a valet map, then you would just use MHD flash option for the HPFP you have on the stock flash for it run.

Definitely not my intention to run OTS maps with upgraded fueling! I'm moreso referring to if there's a power and/or smoothness gain that's noticeable if you do a custom E40/E50 MHD tune on stock fueling vs on HPFP+Injectors.

What I'm saying is that after I get my unlock done next month, I'm probably going to run the OTS E40 map (on stock fueling of course) until I decide if I really want to go the custom tune route. Then if I do want to go custom map, I'll do the HPFP/Injectors early if there's a meaningful benefit to doing so on the stock turbo, or if there is no real benefit, I'll save that for when I'm ready to go upgraded turbo.

 

[Twisted Tuning]

Definitely not my intention to run OTS maps with upgraded fueling! I'm moreso referring to if there's a power and/or smoothness gain that's noticeable if you do a custom E40/E50 MHD tune on stock fueling vs on HPFP+Injectors.

What I'm saying is that after I get my unlock done next month, I'm probably going to run the OTS E40 map (on stock fueling of course) until I decide if I really want to go the custom tune route. Then if I do want to go custom map, I'll do the HPFP/Injectors early if there's a meaningful benefit to doing so on the stock turbo, or if there is no real benefit, I'll save that for when I'm ready to go upgraded turbo.

i properly done custom tune will run better almost always than an OTS because its being tailored directly to your car. as stated, can you do injectors and hpfp on stock turbo with a custom tune? yes, you can get more from a custom tune. just not an OTS

 

[Timmy_Jones]

Ive been running MHD / Stage 2 for about a year now. Recently updated to the newest version with a multi-map setup. Do I need to reflash to run XHP? Was going to purchase XHP here shortly.

 

[QTR FMS]

I apologize if this has been answered 100 times (I wasn't really able to determine a clear answer from what else I was able to find other than "it can sometimes help with ethanol blends")

Would a HPFP + Injectors be worth it for a MHD E40 custom tune or is the power to be had negligible? I'm planning to unlock in Miami in June and run MHD OTS until I'm ready for a custom map, but if HPFP+Injectors gives any meaningful benefit I'll hold off on the latter until I've upgraded those. (I plan to max out DI on an upgraded turbo way down the road anyways, so I had already planned to get a HPFP/Injectors regardless, this just determines if I get them sooner rather than later.)

The main benefits of running a higher ethanol content are cooling the combustion chamber and improved knock resistance, which can make it easier to gain more power, but not always.

Plus, with upgraded HPFP and injectors, you would probably be able to run methanol instead of ethanol and make even more power.

Adam was able to run e50 on stock HPFP, but there were very limited margins for safety and reliability, and he had to max out the HPFP and run lean to get there. Upgrading HPFP would just make the car more reliable at that point, rather than making more power.

 

[Twisted Tuning]

Ive been running MHD / Stage 2 for about a year now. Recently updated to the newest version with a multi-map setup. Do I need to reflash to run XHP? Was going to purchase XHP here shortly.

you don't NEED to reflash. but you should reset your trans adaptations after flashing XHP

Sponsored