Fitting Bigger Injectors | Injector Rescaling

[@hpa101]

🚙 Building a fast car? Get $400 OFF the all-inclusive VIP online course package deal: hpcdmy.co/offery202 🦵Kickstart your EFI Tuning knowledge. Get 50% OFF your first online course: hpcdmy.co/offery202 🔥 Get a T-Shirt or Mug by leaving an Apple Podcast review, or even a question! www.hpa-tunedin.com/ If we read out your review at the end of a future episode, get in touch to grab your freebie. Easy 🧠- Taz 🧔🏻 TIME STAMPS: 0:00 - What Is Injector Rescaling? 1:36 - Some Basic Traps To Avoid 3:02 - You Cannot Rescale MAF and Injectors At The SAME Time 4:00 - What We're Looking For In Our Trims 4:36 - Mk1 Eyeball Check 4:55 - EcuFlash Software 6:44 - MAF Scaling Tip 7:26 - Stock Calibration Trims & Latency 11:11 - RomRaider Logging 14:38 - Avoiding Subaru 2800-3000 RPM Fuel Oscillation 15:10 - Checking Fuel Trims 16:12 - Other Data To Log 17:28 - Trims At Idle 17:56 - We're Happy With Stock Trims, Let's Progress 18:34 - Take Care Fitting Your Injectors, Check For Leaks 20:00 - Pre-Start Calibration 22:03 - Entering Scaling Data 22:40 - Injector Pulse Width 24:15 - Cranking Fuel Tables 25:52 - Tip In Enrichment/Transient Throttle 26:45 - Saving File & Flashing To ECU 27:13 - First Start, Stabilising Temperature and Trims 28:00 - New Idle Trim Data 28:40 - New 3200rpm Data 29:30 - What These Numbers Mean 31:10 - Some Finer Setup Tuning 33:20 - Reflash And Data Logging Idle Again 34:49 - 3200rpm Data Again 35:25 - What We Have Done And Why 37:35 - Scaling OR Latency Adjustment Decision Making 38:00 - Don't Just Copy Our Changes 38:15 - MAF Calibrations Can Be Different 38:48 - Fuel Pressures Can Be Different 39:23 - Your Ethanol Content Needs To Be Considered 40:10 - Not Always This Easy 40:55 - This Isn't The Whole Tune! 41:10 - More Free Content Below

[@HeidiFegles]

His knowledge of how every map affects the tune is priceless information folks.

[@hpa101]

Cheers for the support 😎

[@grahamerosewarne6656]

I always learn more and more from HPA. Thanks heaps 👍My tuning 🤞🤣 Aussie Fan 🤘🇦🇺

[@Alchemist37]

Such a good explanation of the process and key points everyone who wants to get into tuning cars should know before even touching an ecu calibration 👌

[@moabman6803]

Great video. In adjusting latency as well as other adjustments, I often get confused by map and table names specific to software being used. Makes it harder for me to ensure I'm adjusting the right tables

[@vonvoyage14]

Incredible and detailed explanation! This has becoming more interesting and seems easy to get into learning and practice but I guess the most difficult part (and maybe time consuming part) of this process is prepping the car for this type of tuning especially for older vehicles' sensors which we need to verify and check - o2 sensors, correct tps calibration, maf sensors, fuel pressure, ects, vacuum leaks, exhaust leaks and so on which with each problem would definitely make it harder to tune. Excellent video will check back for more

[@hpa101]

You certainly have to be setup and have access to the relevant tables to apply this knowledge. Also, it is easy to watch this and understand but then draw complete blanks when you get your own laptop in front of you 😅 We find people generally run through things a few times even if they understand it off the bat - Taz.

[@bindabbin6067]

Thank you!

[@hpa101]

Hope it helps! - Taz

[@HeidiFegles]

To put it simple. Your ecm can learn and add or subtract fuel, so the goal is to hit your scaling right down the middle so your ecm can learn equally both ways and so it’s job correctly. You will have to scale injectors, tune latency, and also maf scaling to dial it in perfectly down the middle so your ecm is happy.

[@msgofast]

You need to adjust low pulse width tables before trying to tune that, tables very different on id1050x. Chasing your tail if you don't.

[@bluegizmo1983]

Can't be that important, my '04 subaru doesn't even have "low pulse width" tables at all.

[@msgofast]

@bluegizmo1983 it does, just the version software you have tables not defined They are always there. Change would make car drive smother.

[@BourneThisWay]

I have a set of the high imp NZEFI 1000cc injectors for my R32, and they do not seem happy idling anywhere near stoich. With all the injector data already in, the best I could idle at is 13.0 AFR.

[@donaldpollock5118]

Very insightful

[@Takeitlightly6]

I understand not even 60% of what was said...now i need to watch it at least 2 times and take notes this time. I dont even know if it applies to standalone ecu.

[@HeidiFegles]

Yes it all applies injector scaling is crucial. But if you know your flow rate of injectors due to a test. Put that number in and then work on latency.

[@HeidiFegles]

If you have a car with ported heads and different intake your maf scaling may have a different curv and you will have to get precise with your maf scaling

[@gencosumer]

On a 16 bit wrx ecu fuel pump duty cycle is related to injector duty cycle. Installing an id1050 the fuel pump works 33% to 66% and dont go 100%

[@HeidiFegles]

I’m here to learn as well specifically injector latency.

[@ssematimbajoel9427]

Great video.😊

[@HeidiFegles]

Also after reading the nasioc forums you should always log Initial advance multiplier. It should be 1.00000 on 32 bit ecms. 16 on 16 bit wrx ecms but that iam should stay at 1, if it drops, something is wrong, dig deeper into knock, and fueling and maf scaling

[@dancingburr]

Is there a lesson for how to do this with a standalone ecu?

[@hpa101]

It's actually a lot more straight forward to fit larger injectors when you're using an aftermarket ECU and a volumetric efficiency model. I'll pop 2 links below, you'll only need the second one if you're not using VE and instead are using a traditional millisecond model instead which does require a bit more work - Taz. hpcdmy.co/o9z hpcdmy.co/x2n PS: If you haven't purcahsed your injectors yet this might also help: hpcdmy.co/bs8

[@HeidiFegles]

Also you kinda want to cheat your ecm to learning by taking away fuel in case something happens you will be rich not lean.

[@HeidiFegles]

I’m assuming that they pulsating fuel issue is on the stock system, I have a walbro 255 with 3/8 fuel line and don’t have that problem?

[@melvin_broh]

Thanks for well explanation. This is really helpful. I am hoping to put ID1050x, is it same procedure for ID1050x ?

[@hpa101]

Yes sir, great choice of injectors too - Taz.

[@HeidiFegles]

Unless your Subaru is making you cry and problematic then you’ll disregard the fire extinguisher and probably smile as it burns to the ground haha. I love my car but sometimes it can be stresssful but it’s usually something I have done at this point like add 2 degrees of timing and stretch the head bolts. Ya it happens, I’ll take stretched head bolts over spinning a bearing any day.

[@Gien97]

Can I rescale the injectors for example I upgraded from 240cc to 550cc. But My MAF sensor is currently scaled for My Intake with 3 inches MAF Housing and 240cc Injectors with perfect fuel trims? I can start scaling My 550cc injectors from there, right?

[@donaldpollock5118]

Will romraider work on Mitsubishi?

[@hpa101]

EcuFlash does, but I'm not sure about RomRaider sorry. Worth a search - Taz.

[@mikehawk1673]

Just use ecu flash for tuning and evo scan for logging

[@onedayiwillmakesomecontent]

Serious question, Anyone playing with injectors on hybrids?

[@strifefaction]

Im Definitely in the deep end trying to tune/scale id1300s with an VE table that's a work in progress as well huh? ( ᐛ )

[@dylanhendricks7267]

hey How can I tune my own ECU want pop and bang and car abit lazy on acceleration

[@loubakker5000]

It is 'mass' air flow and not ' mess' air flow sensor.

[@hpa101]

Thanks Lou ❤️

[@michaelkannard7149]

Your hair😅

[@hpa101]

Yes, he likes to keep it on his head. Odd right? 😅 - Taz.