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HPT doesn't allow you read the actual tune file that is written onto your ECU, rather it reads your ECU ID and gives you the original calibration to start from. This can be an issue if you've already...

No worries man, this was really only happening under some pretty particular circumstances that unfortunately were consistently showing up during a couple parts of my daily commute...most of the time...

So after some study I think I finally figured out the cause and worked out what is so far an acceptable solution for me. I think what I was experiencing was torque management in anticipation of a...

OK here we go, running my stock tune file but with a slightly more aggressive throttle curve and AIP fault delete. My commute to work is the first log and it happens a lot while heading down a few...

Thank you, I've adjusted a lot of things a little bit at this point so I'm going back to a basically stock tune for a bit to see if the problem still occurs or if I had inadvertently caused it. I'll...

Hey SlowNStock, I'm having an annoying RPM drop on decel. According to someone on the Tundra forums it's normal and they of course suggested a tune so I'm hoping there's an easy, known fix before I...

Appreciate all the great info you guys have been sharing! It's been really helpful as I try to figure out Toyota's tuning language...it's not exactly intuitive coming over from the Chevy LS world but...

P01,Gen3, 2Bar OS, my version of HPT Scanner does not read MAP until engine is cranked. Usually reads normally after engine is started.
... always been that way.

Factory OE gearing is 3.73, half ton weighs near 6000 pounds... Restrain yourself in camshaft selection.
I am happy with 212/218 .550 "Low Lift" they pull strong through 6200 rpm.
ANY more cam...

You have 24 degrees of spark advance in your high load areas, you may want to back those down to 12 or 14 initially.
Also, in the 2000 rpm, .64 airmass area you'll need to back spark down to the...

Did you try modification of this term, and to what effect ?

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My Dynamic Air Filt is set at .1992

For reading wideband output on a 2002 Tahoe, the above post seems to indicate that the MAP sensor connector, on top of fuel tank can be used for 0-5 v signal input ?
Is there any...

Have I read correctly:

The DVD cost is $260 ??

Is that correct ?

VCM scanner does not display TPS %
Other parameters appear as normal.
WHat is possible cause and remedy ?
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Tried on 2 different vehicles:
2002 Tahoe cable throttle, and 2004 tahoe DBW...

I have installed wideband in place of OEM front O2 sensor, and ran output 0-1V narrowband simulator from Innovate MTX gauge back to sensor pigtail.. PCM seems to be happy with the data stream,...

Assuming a Boost Enrichment number of around 1.26 or so ( 14.7 / 11.5) to get AFR to 11.5 under boost, does the VE table in the boost portions need to have incrementally increasing numbers, ...

I am attempting to build a preliminary base VE table, for a new 2 bar tune.
Using boost enrichment value of (14.7/11.5)= 1.28
If I rely on that figure in Boost Enrichment, can I then ...

Will you be using a 2 BAR SD tune on this one ?
Have it up and running yet ?
Curious what your VE table looks like at this point, if you are willing to share, it would help me out a bunch.
...

I am building similar, 4.8 with TVS1900, expect 6 to 8 psi

Coablt 2BAR MAP sensor on the way.
Could really use a starting, baseline spark map, and a VE table to get me going initially.