🛠 How to calibrate Fuel Level on Haltech iC-7 dash | TECHNICALLY SPEAKING

[@haltech]

Our last iC-7 wiring video received a ton of requests for a more in-depth video on the fuel level calibration. So we've called back our wiring expert and our tuning guru for, what we believe, will be the definitive guide to calibrating your fuel level with an iC-7 dash.

[@petelattimer6808]

never seen a saddle tank with 2 fuel senders. usually they just pump fuel from 1 side to the other to keep the side with the main pump (the pump that feeds the engine) and sender fed and accurate.

[@bigbothoee8617]

@@petelattimer6808 can't of worked on to many different types of vehicles quashqai some Porsche bmw the ones I've seen

[@nickclewer5723]

Couple of extra points to note: 1. Saddle tanks won't empty with the feed from the fuel pump if you have a return system. Most use a venturi on the return to suck fuel from the other side of the tank and require fuel flow in the return line to create that effect. The other side may need to be syphoned manually. Dead head systems you should be ok with since the return and ventri is built into the feed. 2. The Haltech IC7 has been coming in different pullup resistor values. Haltech's videos show a 240ohm pull up, however I have had two IC7 dashs and one just purchased a month ago and they both have 1000ohm pullup on AVI4. I'd recommend putting in your own 240-270ohm resistor pullup externally to the IC7 and turning off the 1000ohm internal one. This will give a boarder range of voltage reading. 1000ohm is way too high and makes the gauge too sensitive.

[@mightycarmods]

Excellent video as always 👍

[@ProModsPerformance]

I think it's important to note most factory senders are NOT linear in terms of position vs. resistance value. In your case, I'd consider doing a "1/2" tank fill as well, to get an additional data point to improve mid-tank accuracy.

[@wobblysauce]

Yep, full to half is generally quite a bit faster than half to empty.

[@phuzz00]

The shape of the tank also makes a big difference. If the sides of your tank aren't perfectly vertical, then you're not going to get a linear response. This is why some cars seem to take ages to drain from 100% down to 30% (eg), and then the last 30% seems to disappear quickly.

[@mdnovaman]

An important thing I’ve noticed since owning mine. When taking the raw data. If possible have the engine running. The difference in reading due to the voltage with the engine off. And the alternator charging. Makes quite a big difference to the fuel level reading, ideally in the future the ic7 needs a voltage correction table added for this. But until then it’s worth re doing the calibrations with the engine running if you couldn’t at the time of initial install.

[@dubbleA100]

Gotta love having an Rx7 where you can physically drain the tank.

[@alexisverduzco646]

You guy's are beasts on explaining this stuff and for sharing this

[@1993kawasaki]

Pretty awesome to have videos like these to reference, Cheers HALTECH

[@igvtec]

Hell yes love this channel good work fellas very informative. 👍

[@ChevyS10LSUK]

Man these videos are super helpful....

[@Adrian-vd4te]

godsend of a video thanks boys keep it up 💯

[@bmorrison3665]

thanks for the saddle tank tip, this solved my issue!

[@RhysK94]

Hope Dave is all good, he seemed a little down and or elsewhere! Great video as always guys!

[@p.auto.t]

Mans probably just tired

[@RhysK94]

@Dave Forrester Glad to hear all is well elsewise!

[@peterlauzon4905]

i prefer monitoring voltage every 5 liters of fuel because all fuel tanks are not a square cube like your linear chart suggest, sometimes they have weird shapes and the first 5 liters may not change the reading voltage as let say the last 5 liters due the fuel tank shape, also doing this procedure require at least a battery charger that can hold or mimic engine running voltage. i started empty ( not 5 liters safe factor), i prefer set an L.E.D alarm at 15 liters but you guys probably know all that 🙂

[@johntheconnor8721]

ASMR dave lol. excellent video as usual👍

[@haltech]

Too smooth with it, could put you to sleep lol

[@jameswieser2857]

Maybe you cover the smoothing filter, and how to calibrate. So you can set it so your fuel level on the dash output doesn't slosh as much.

[@brettkelly1436]

I would be interested in this to, the fuel level is very sensitive and moves around a lot while driving

[@alirezamahendra9507]

Resistors. the IC-7 has a built in resistors into the one of the Analogue Volt input. If you don't have IC-7 e.g connecting the sender directly to the ecu, you'd need to assemble a breadboard consisting of resistors etc, or buy directly from haltech, their fuel level signal conditioner. It filters the resistive signal (ohm/resistance) and converts them to 0-5 volts

[@jameswieser2857]

@@alirezamahendra9507 thanks for the reply Ali. I did use a resistor, so I have a much larger range for the voltage depending on level. But the level can shift drastically with stopping and cornering. And they have a smoothing filter to combat this. Just thought I would suggest they they cover it in the video. Thanks again for trying to help!

[@davenonameforrester]

Try increasing the smoothing number, I typically go to something like 9000 or higher.

[@ejgoddan9505]

I also wish they covered this more, I've just been adjusting my smoothing factor in my IC7, seems to be pretty good now.

[@lukehewitt2213]

How do you change from displaying % on dash to displaying voltage, trying to do this but can’t see how to display voltage. Help please 😐

[@haltech]

Shoot our support team a message. They'll be happy to help you out. www.haltech.com/support

[@Charlie-wr8cu]

Is the computer program and calibration process the same with the stand alone dash

[@scottrowe3246]

How can I see Fuel Level Voltage on my IC7 tuner didnt calibrate my fuel level, going to poke around software to figure it out.

[@pattywoods8089]

is it at all possible if you could make a video on how to setup the odometer on the IC7 with an older car cheers

[@davenonameforrester]

Cool, that's something we can look at for sure! Otherwise just give our tech team a call, it's actually quite easy :-)

[@kellyanderson7115]

What's the advantage of using a Haltech Fuel Level Sender Signal Conditioners? I ordered one of these (it brought my order up to the point where I got free shipping). I'm wondering if it would be an advantage to use it or not. Fuel Level Sender Signal Conditioner Part Number: HT-038002

[@LaStanley]

Legends boys love your work once again!

[@SLYDIT]

Many tank sensors will max out before you get to totally full. You should monitor the voltage as your filling and see where it stops

[@craigm5511]

I noticed that the dash has had an image of the car's number plate loaded into the dash display. Is that going to be something supported by Haltech in a future software update?

[@damianm79]

Hey guys, I cant seem to work out how to get the fuel volt reading on the dash.. I have the fuel level connected to ECU, would this be the cause? I have no AVI's connected to the dash directly.

[@bigbothoee8617]

Does the dash get 12v feed from haltech can connection ?

[@davenonameforrester]

12v comes from the CAN plug that does into the Elite ECU.

[@bigbothoee8617]

Sweet thanks that's what I meant lol the 4 pin plug I'm in process of setting up fuel level took me some time so you set the dash to raw voltage and capture pics then convert into dash table Was confused as how you guys have voltage display I only have Liters display

[@bnrlife3213]

If i'll be doing this on cars original level sender and wires, for example on an r32 skyline, would i need to connect 1 or 2 wires from connectors behind the gauge cluster into the ic7?

[@davenonameforrester]

You should just need 1 wire, the other should be grounded at the tank to the body.

[@Iazystan]

what did yall use to mount the ic7 on the R31 cluster? thanks in advance.

[@haltech]

Custom R31 dash mounting plate from 3D Racing Solutions. See it here: kzbin.info/www/bejne/kJvKoqiwe9Wrb6s

[@JMcDGolf84]

My voltage is like anywhere from 0.00 to like 0.5...how the heck are you getting like 2.5 volts?! What am I doing wrong here?

[@bvward]

Scott and Dave, How do I calibrate if I live on a steep hill? Is there an angle of descent parameter? ;)

[@elitecol69]

Jack up one end of the car untill it's level

[@yeahthetroy4792]

Something is off with Dave hope your okay Dave

[@haltech]

Nah, he is all good. He's just cool, calm and collected. Smooth with it. 😎

[@yeahthetroy4792]

Hahaha thats good then good on you big Dave

[@davenonameforrester]

Thanks for noticing and asking - It means a lot. I was still recovering from poisonous jellyfish sting a week or 2 before - still was not feeling well. #straya

[@jacobnicholas9326]

No safety glasses 😨 Scott Dave think of the children!

[@davenonameforrester]

My Eyes, the Goggles do nothing!

[@vetrivel1994]

How can I get a haltech seems pricey

[@jamie11greeN]

Buy the kit you need for your car 😂

[@craazyy22]

I saved for a couple of years. 100% worth it :D

[@25aspooner]

I waited for Black Friday sale. Still expensive, but the engine safety systems made the choice easier.

[@jameswieser2857]

As with all things, you get what you pay for...

[@rugwalle]

Depends on how you define pricey

[@jubthreesixnine688]

Moist