Questions and Discussion on Vortech Supercharging Systems

[nelsmar]

Originally Posted by Visconti

yeah, find that email please

Here are snapshots from my email, there was a LOT more conversation going on so hopefully it isnt out of context:

Originally Posted by nelsmar

I don't know what the fuel trim's should be (short term) but i see them ranging commonly from 20-35% at idle & low rpm.

I tried to log G's to hopefully show visually the car jerking but you can barely see any "mountains" right after throttle. You can see a slight bit but its hard to see as it is so minor. I also idled at the end, and then tried to hold idle at certain RPM's to show fuel trim changing & AFR. Once i break about 1500 it ranges from mid 15's to upwards of low 16's AFR while parked, and the fuel trim seems to push upwards of 35% at 1,500+RPM.

Originally Posted by Tuner Response

Fuel trims wont work when running e85 cause the ecu will always be adding25%+ all the time with the flex fuel kit.it only works with the map switching mode of running e85.

Does ecutek have a set standard for how it adjust fuel for flex fuel? or is that up to tuners discretion to create their own map and tie it to a sensor input? I have very little knowledge of what you see on your side of the software suite.

[Visconti]

Originally Posted by nelsmar

Here are snapshots from my email, there was a LOT more conversation going on so hopefully it isnt out of context:





Does ecutek have a set standard for how it adjust fuel for flex fuel? or is that up to tuners discretion to create their own map and tie it to a sensor input? I have very little knowledge of what you see on your side of the software suite.

It's up to the tuner to setup the flex fuel via custom maps.

EcuTek offers a base file/help file..my Flex Fuel tune is completely different from EcuTek's 'help file', I personally dont like how they do certain things.. doesn't make their way wrong

Short Term & Long Term Fuel Trims 100% work and have nothing to do with Flex Fuel tuning.

No matter what you want your fuel trims in the -15/+15 range MAX.

I try and keep them -10/+10 Range

If you have big trims and have flex fuel setup the flex fuel fueling side of it isnt setup right.

Hope that helps

John

[jamesm]

ecutek uses trims to compensate for e85? why wouldn't they just change the injector scaler like you normally would? fuel trims not working is a really big downside to that implementation lol.

edit: oh ok so the tuner sets it up.. not an across-the-board ecutek thing.

[nelsmar]

Originally Posted by Visconti

It's up to the tuner to setup the flex fuel via custom maps.

EcuTek offers a base file/help file..my Flex Fuel tune is completely different from EcuTek's 'help file', I personally dont like how they do certain things.. doesn't make their way wrong

Short Term & Long Term Fuel Trims 100% work and have nothing to do with Flex Fuel tuning.

No matter what you want your fuel trims in the -15/+15 range MAX.

I try and keep them -10/+10 Range

If you have big trims and have flex fuel setup the flex fuel fueling side of it isn't setup right.

Hope that helps

John

This was exactly my concern / feelings. Fuel trims will eventually max out and then the ECU cannot compensate. My fuel trims also matched my ECA logging showing a trim adjustment going along with it.

I was fairly certain this was part of another issue I was having due to fuel trims possibly maxing out causing lean spots. I'll eventually post more information after I do a tear down... I just want to verify some things physically before I posted logs on the forum. As something like that can cause a PR mess for tuners.

Even though you and I do not see eye to eye and obviously don't get along and were curious I can definitely show you some of the scenarios in private.

[Visconti]

Originally Posted by nelsmar

This was exactly my concern / feelings. Fuel trims will eventually max out and then the ECU cannot compensate. My fuel trims also matched my ECA logging showing a trim adjustment going along with it.

I was fairly certain this was part of another issue I was having due to fuel trims possibly maxing out causing lean spots. I'll eventually post more information after I do a tear down... I just want to verify some things physically before I posted logs on the forum. As something like that can cause a PR mess for tuners.

Even though you and I do not see eye to eye and obviously don't get along and were curious I can definitely show you some of the scenarios in private.

tear down?

[nelsmar]

Originally Posted by jamesm

ecutek uses trims to compensate for e85? why wouldn't they just change the injector scaler like you normally would? fuel trims not working is a really big downside to that implementation lol.

edit: oh ok so the tuner sets it up.. not an across-the-board ecutek thing.

Yeah this is a tad bit of a relief now that I realize they can do their own maps... Sort of clears up a lot of my guessed concerns from previously. Now i need to go parse some logs and verify again. >.<

[nelsmar]

Originally Posted by Visconti

tear down?

I don't plan on commenting much further in public at this time. As I said if you wanted more information you may contact me in private. I don't want to start a "vendor bash" in a vendor created thread is all. And this is not pointed towards you or anyone in specific. I just know how topics like this tend to turn out.

[DJCarbine]

Originally Posted by Visconti

If your intake didn't get wet, it's because of the extra airflow due to the cold temps.

My earlier Vortech tunes will trip this code when it's cold out, nothing to worry about. If your running my tune and dont have the latest version, please put in a request

btw, when your getting this code, a datalog with g/s isn't helpful for the tuner.. grab a datalog that has MAF Volts


John

It really only happens if I redline any gear... but not always. It is very cold.... my IAT's are less than 0C even at very high RPM at WOT

I will pull the MAF voltage in my future datalogs


This is currently with a Moto-East tune, I will put in a request for an updated tune through you once I get this tune sorted out

Thanks for the response!

[Visconti]

Sounds good guys..

Sent you a PM nelsmar

[DJCarbine]

So yeah... ran the car hard only up to 6K rpm and it did not trip the code. As soon as I hit redline the code pops immediately.



On a side note, I've been starting the car in 15-20*F weather and the supercharger is fine. Time will tell, but I'm not going to worry about the 25*F warning as long as the temp doesn't drop to sub 0*F

[Dezoris]

Originally Posted by DJCarbine

So yeah... ran the car hard only up to 6K rpm and it did not trip the code. As soon as I hit redline the code pops immediately.



On a side note, I've been starting the car in 15-20*F weather and the supercharger is fine. Time will tell, but I'm not going to worry about the 25*F warning as long as the temp doesn't drop to sub 0*F

My supercharger sounds bad in this weather until it gets heat. Disconnected oil cooler yesterday as temps would never get above 150F.
You notice any major difference in sound in the SC when it is cold?
Almost sounds like bearing noise.

[DJCarbine]

Originally Posted by Dezoris

My supercharger sounds bad in this weather until it gets heat. Disconnected oil cooler yesterday as temps would never get above 150F.
You notice any major difference in sound in the SC when it is cold?
Almost sounds like bearing noise.

Not really, the only difference in sound is if I have the hood popped, a very slight whining sound. I would say the bearings aren't very happy about the cold, but neither is my transmission or for that matter... me heh.

Unless it gets a lot louder I'm not concerned, as soon as it warms up it sounds silent and for the most part loves the cold air

[Foobar]

No strange noises from mine so far. Temp in the 20s and it runs like a champ.

Sent from my Nexus 5 using Tapatalk

[charged86]

Originally Posted by Foobar

No strange noises from mine so far. Temp in the 20s and it runs like a champ.

Sent from my Nexus 5 using Tapatalk

Ditto