How to Improve the B58 Fuel System: A Comprehensive Guide to Fuel Pump, Injector, and Cam Upgrades

Guide to upgrading your B58 Fuel System
Quick chart view: 20:01
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[@kern417]

See the quick chart I made at 20:01 to make picking your mods simple based on your hp goals. Hope this helps

[@ProducaGraham]

Is the chart factoring in stock turbos? Or is the chart just based on what the individual part is capable of?

[@kern417]

@@ProducaGraham turbo doesn't matter. It's just how much fuel the part can flow.

[@ProducaGraham]

@@kern417 gotcha! Ty!

[@ooopppiiiuuummm]

best b58 creator

[@kern417]

🙏🏾

[@marklinley815]

As always, another great video on the fuel system.

[@evildarren1]

Kern you're the goat at uploading just the right videos I need each time, love the content!

[@kern417]

🙏🏾

[@behindthebuild8016]

I think there might be a sweet (cost effective) spot at upgraded injectors, down pipe, stage 2 HPFP & hybrid turbo. Say US$6500 & stay within the safe limits of mani, trans & engine

[@RAFARCHmotorsports]

what might be an estimated safe limit on trans and engine??

[@wingedhussar5528]

First. Still here for the knowledge. Even though I'm on the gen2 B58 now.

[@grendon3]

Thanks you’ve helped me decide what path to take 💜

[@jeremytownson1101]

Really useful video. Like the chart.

[@kern417]

Appreciate it

[@y00h000]

Thx for great summary

[@MrErball]

😄 That face you're making during the voiceover discussing costs.....

[@flaviomartinho1753]

Great review , on point imo

[@kern417]

🙏🏾

[@shweatycardboards8954]

that fly in on a stage 4 hpfp

[@technopro-kz4xv]

And with PureTurbos 😂

[@jaquanh35]

Can you do a video about the benefits of using Race Gas on the Gen 1 and Gen 2 B58’s?

[@kern417]

Sure

[@mattcooper4333]

Port Injection costs way more than 2k, I only see that happening with an AIC controller. With reflex and all parts are around 3500 or more. Installed most pricing is 4-5k

[@kern417]

$1200 PR port injection $700 Motiv Reflex $1900 total 🫡

[@mattcooper4333]

@@kern417 Don't forget the harness that will cost you another 1K, and most go for larger than 750cc injectors which is another 400 for the common 1050. If you manually wire everything and install it yourself I guess you could get there, but that will apply to very few owners.

[@kern417]

@@mattcooper4333 what i priced is exactly what i bought and installed. You don't need any of that other stuff.

[@InnaB58]

This is the exact video I needed to watch! One question though, If you only had access to 91oct/95ron pump fuel, how would you go about improving your fuel system to make the most of a hybrid turbo such as the Pure800 and keep things reliable ? My current(540ix) setup is pure800 cast with DS2 hpfp and MHD flex fuel kit, i have a custom tunes for 91oct/e30/e50. i get my E mixes by adding 95% bioethanol(which is pretty expensive in Europe) so Im curious with all the new upgrades out now is there a better way i could fuel my setup? XDI injectors? Intake manifold with meth injection? Or just suck it up and stick with the setup i have? :) Thanks from @b58irl

[@kern417]

If you only have pump gas you don't need anything else. You'll run out of octane before fuel flow even with a TU pump.

[@HRaychin]

Im on stage 2+ MHD RON 98 pump gas with TU pump and downpipe.So if i upgrade to pure 800 cast turbo TU pump would be okey to support 550-580Hp as i dont intend to go beyond these numbers?

[@B58Aquanify]

What’s the power range you make with a hybrid like Pure/Daw and Port with no LPFP Would you get lpfp first?

[@kern417]

Depends on fuel but on an ethanol mix the stock lpfp can support 650-700

[@NguyenFamandChavez]

When replacing Fuel injector do you have to reset the adaptation? or is it just a plug n play kind of deal.

[@kern417]

Stock are plug and play. Upgraded require custom settings in the tune.

[@kevin-jm3qb]

hey kevin. Do you think i can get a black friday deal on an intake manifold? Which intake manifold would you suggest. I had Evolution of Speed in mind for the a90 mkv.

[@kern417]

Black Friday is in November.

[@huh0123]

If you run 93 octane but swap out for a 10.25:1 or 10:1 compression ratio would you still hit octane limits before fueling? I don’t have any E85 accessible to me and everyone says octane boosters do terrible things to your engine, idk what to do.

[@kern417]

Yes but the limits will be higher. It's easier to just add meth injection

[@Miketa320]

@kern417 I’m sorry man I’m an idiot but can I both do port injection and upgraded injectors?

[@kern417]

Yes you can

[@tCoLLieRgaming]

I’ve got a model year 2020 (built early 2019, owned since august 2020. Is it possible I’ve got a TU pump, how can I tell?

[@kern417]

kzbin.info/www/bejne/q17Idmusa7-rfJI

[@G20_SIM]

If I wanted to comfortably max out my stock transmission and engine reliably to daily drive on my gen2B58, that would mean around 650HP and 650lbft torque right Kern (or could I go higher torque with a custom transmission tune?)? The best and cheapest way too achieve this would be pure800 with an intake manifold that supports port injection correct? stock injectors and LPFP should be good with that if I'm running E50 right?

[@kern417]

I would lower torque to keep the trans happy and yes that could work

[@G20_SIM]

@@kern417 not gonna lie after doing hella research and watching ton of your videos I cancelled the PG intake manifold and decided to go with turbo/hpfp instead. Just can’t decide between the DAW flowmax or the new Vargas VTT GC-MID. Apparently the MID is made for TU engine and can support 650hp and is like $1k cheaper than DAW. Just haven’t seen any data on it or bimmerposts.

[@kern417]

I believe DAW will be more reliable

[@Yruh4688]

Does changing the fuel pump decrease mpg?

[@kern417]

Depends on your right foot

[@KACorPoor]

Released this video at the perfect time. Just got a DAW 2.5+ and am looking to get in the 550-600 park. Do you happen to know if it's possible on 93?

[@williamtaylorii2360]

Definitely will need port injection

[@kern417]

It will be difficult. Most people end up around 500-550. And no, you don't need port injection

[@KACorPoor]

@@kern417 What about an E30/50 mix with TU pump?

[@williamtaylorii2360]

@@kern417 so when do u start recommending port 600+?

[@kern417]

That can get you north of 550. My best dyno was 590 but that was with a lot of fine tuning.

[@slo_shah]

So for 650whp-700whp on gen 2 b58 would port injection be better?

[@kern417]

Direct injection is safer. Port injection is cheaper. Just depends on your budget and priorities.

[@slo_shah]

@@kern417 Was leaning towards direct injection, for lpfp on the gen 2 b58 what options are there?

[@kern417]

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