1st Gen Haltech ECU Discussion

@treyus30 Did you change your cranking fuel as well. I'm having regular long cranking and I think it is actually due to being rich since it often starts with a small misfire.

 

I might have since you last saw it. It's around 100% for the most part but it dips down to around 75% in the warm regions. The fuel prime is what was really getting me because it was making it too wet, then over time the cranking table would dry it out

 

Maybe I will try taking more out of the prime pulse too, some places you could sneeze on the key and it would fire up and others you have to hold it for a while.

 

Yup, sounds familiar

 

After changing away from using vacuum are you still seeing idle fluctuations after a recent decel or after blipping the throttle?

 

With all my settings, no, not really. Very minor when coming from decel - I'd say even less than stock actually. Blipping doesn't really seem to affect the idle control at all, but I haven't made a habit of doing that outside of testing transient problems.

My fluctuations are mainly when going from Park into gear, which I'll solve as soon as I have the motivation to pull my gauge cluster out again (that's where the P/N wire(s) are supposed to go).

 

I'd highly recommend removing the MAP axis from those tables, even if you don't use my methods exactly. Adjustments to idle vacuum are more profound from the fuel table.

 

I've pretty much gotten rid of my transient problems, I need to richen up zero demand in a couple of spots to smooth on/off throttle behavior but nothing major. The key is going much richer than you think is necessary, fatten it up, it likes it, might be something about how the injector wets down the runner a lot.

 

Yeah I'll take it out later today on mine and see how it runs, it's honestly pretty stable but it occassionally does some really weird stuff like blipping the throttle on its own. It works much better on a manual than it does on an auto for sure haha.

 

Over the Memorial day weekend, I was able to rev the engine to 6k RPMs (was limited to 4.2k prior). I ended up messing with arming voltages, unchecked enabling ground on the cam (Home), and assigned a level "1" filter to Home. I'll post screenshots of the configuration when I get home from work.

https://youtu.be/n4L9SJpZCYI

I was also able to drive the truck to a few fast food places and idle in the drive thru line. Aside from the Haltech, the only thing I'm figuring out is how to drive this Spec Stage V clutch. Holy crap this clutch wants to grab and go... there is some chatter, but it's still in the break-in period.

The Innovate Wideband sensor I have takes too long to boot, warm-up, and start sending AFR data on the 0-5V output, so I bought a Haltech Wideband CAN kit. I was hoping I could hook the any LSU 4.9 straight into the AUX CAN plug on the Haltech harness, but it needs its own logic box. Anyway, hopefully the Haltech WB comes up a lot faster.

 

The haltech wideband comes up super fast, you'll like it.

 

Ya the HT WB1 is super fast - surprised me at first, I thought I did something wrong lol

fwiw Innovate is on my shit list

 

Sweet, that's great news. Yeah, I was getting DTC's for the Wideband Raw voltage and it was limiting my RPMs to 2k, had to restart truck to get it out of limp.. just annoying stuff.

 

I had an Innovate gauge prior to this one and the LSU 4.2 (?) sensors would last 3 months. Then 'tHeY' said "aw, we fixed all that with the newer models." So, I buys their next model gauge and the sensors don't completely take a crap (LSU 4.9 now), but does this slow boot-up, never heats-up crap.

So yeah, I'm done Innovate too.

 

My Amazon review heh...

 

I think the Haltech WB can box that requires NTK sensors claims a longer sensor life but at the cost of having to regularly do free air calibrations. I'd rather burn up a genuine Bosch LSU 4.9 once a year instead TBH, less effort and they're supposed to be more accurate than the NTK equivalent.

 

A spare wideband is something all of us should keep in the truck. I would hate to get stuck on a trail with an engine that can't run.

The LSU 4.9 that came with my innovate gauge is compatible with the HT WB module fyi.

These PNs are also compatible with the HT WB1
#1769
#17212
#17025

 

It'll run just fine without the wideband, it just wont be trimming or monitoring for safety. But it will run deterministically, executing whats in your map without adjustments.

 

I wouldn't be super comfortable running it in any conditions other than idle and low load situations. STFT is like the first line of defense for engine safety

 

It's not the best, but if you have a ton of corrections still being made to your base fuel map it isn't a good fit anyway.