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No downfall really.. It's preference whether you run VE, MAF or mixed. I've tried all 3 at the track and always went faster in MAF only, so that's how I run it all the time. Plus, no matter how many...

Actually, they are used but only if the OL tables command a richer EQ than the PE tables. Same theory applies to Boost Enrichment with the enhanced OS; richest table gets used.
I setup a closed loop...

I didn't try just because PE forces open loop and I'm already running open loop anyway.

The other interesting part is that we're all experiencing the issue based on a factor of time, but changing...

http://www.hptuners.com/forum/showthread.php?47569-IVT-Terms

Found it.. Sort of.

I've dialed in the non-boost regions of the VE table. I started to work on boost, but the nasty spike still exists no matter how rich I command it.. I found it's coming...

Your dropbox link is broken.

I have FIC1000 injectors in an LSA G8 also and your offsets are vastly different than mine. I'm interested to see the data you're using.

Looks like a return style...

There is a similar post further down the page, but mine is slightly difference hence the new thread.

I'm trying to enter calibration data for two EIO inputs. The first is a linear graphed AFR, the...

There is a TSB on the G8 TCM for a harsh 2-3 flare. You may want to make sure it has the latest cal.

I read roughly 65psi delta at idle, but only 58psi delta anywhere from 0psi boost on up.
In stock form, the ECM assumes there is a constant 58psi fuel pressure in the rail and adds/subtracts vacuum...

Something I noticed.. The PID for injector delta pressure never drops below 58 psi, which is what it's programmed to think fuel pressure is at all times. It increases with vacuum, but isn't...

Well I'll be damned. Same fuel pressure spike/dip here as well:
49618

InjDeltMeas is actual data using your formula, InjDeltaECM is the standard ECM PID.



The easiest way would be to make a...

Voltage shouldn't vary I wouldn't think. The pulsewidth ranges are semi large in the screenshots, but they are moving from what I see?

I also have a mechanically regulated ZL1 pump. I have a fuel...

I just started tuning VE with the MAF failed, but am still seeing the lean spike. I'm still on the rich side of things, but its roughly 0.8 leaner when it happens.
Screenshot when entering PE and...

Subd for results. Exact same issue here. I thought transient fueling was only used for tip-in fueling though, not WOT?

I have a 2009.1 (early 09) Pontiac G8 GT. I want to know if it's possible to use TIS2WEB/HPT to flash the 2009.5 (late 09) OS to my earlier ECM. Both are E38s & both are technically MY2009. The...

I didn't really want to resort to an extra hidden switch, but I suppose that does make things quicker/easier. Now that I think about it more, if someone really wanted to beat on it, they could easily...

Vehicle: 2009 Pontiac G8 L76/6L80e

Is there a way to force the TCS/ESP/Stabilitrak to stay on even if the physical button is pressed to disable it? Or, is there a way to cut/limit power when it...

Here's a video of the same log in graph form. Now I'm wondering if bank 1 is switching too rapidly or if bank 2 is just being lazy..
http://youtu.be/OyuUJHF8nKQ

*Newb here, first post*

I've had HPT for a little while now and I've just searched out any questions I've had to this point, but I need some tech advice here on what I think is a failing o2...