Where did I go wrong?

[The Brad]

Drive it to the nearest priest and ask him to perform an exorcism?

I already tried that. The church was struck by lightning and the holy water left water spots on my paint.

 

[Gearhead]

I'll jump in here... what is MFD at Idle when it is rough?

 

[V-Ref]

When it idles smooth, I notice more power for a given throttle position and the EGTs are equal in both banks, but when running rough and towing, I've seen the odd bank range from up to 100* warmer while running, to 90* cooler at idle.

How did you observe this...several egt guages? Measured where? Which side is the hot/cold one?

 

[The Brad]

I'll jump in here... what is MFD at Idle when it is rough?

I'll get a screen shot tonight. Anything else I should log?

 

[The Brad]

How did you observe this...several egt guages? Measured where? Which side is the hot/cold one?

Dual pyros in the manifolds. Under load, the odd bank can range from even to 150° hotter. At idle, especially cold start, the odd bank will run at just over 200° while the even bank is right at 300°. After driving while idling to cool the turbo, the odd bank usually reads 75° hotter.

 

[Gearhead]

I don't see how it can be rough and your rot vels all be 0

 

[The Brad]

That's what I don't get either. If a dual mass flywheel or a bad TC can screw up a CCT, then how can my truck shake this much and not show up with AE? 3&8 show between 1.5&2.5% in neutral. In drive, 3 drops a little and 6 comes up to 1.5ish%.

 

[The Brad]

I'll jump in here... what is MFD at Idle when it is rough?

MFD is 10.4 mg, ICP is 490 @ 10.16% and steady. Oil temp was 180*

 

[superpsd]

This may have no merit to your situation as I only have basically a tuned stock AA injector truck. Played with the ICP map a bit ago. I took it as low as 450 and engine just got quiter and a little more unstable but no shakes or romp. Idles smoothly @ 580 @ 180 EOT. Stays smooth up to about 700 by 800 it was stable but loud.

 

[Gearhead]

MFD is 10.4 mg, ICP is 490 @ 10.16% and steady. Oil temp was 180*

Those numbers sound good but some injectors have something sticking and won't fire properly until 550-600 in some cases. Your rotational velocities will show 4+ if that is the case on those cylinders.

 

[PSD POWER007]

My PIS injectors would not idle smooth in that 490-500 ICP range. Jody bumped mine up to 580 and my idle was rock solid from that point on. Idle was a touch louder but couldn't be more steady...just an FYI.

 

[TyCorr]

Hmmmm...interesting...

 

[TyCorr]

Those numbers sound good but some injectors have something sticking and won't fire properly until 550-600 in some cases. Your rotational velocities will show 4+ if that is the case on those cylinders.

If its not proprietary, where would you set icp@idle on a truck with hybrids?

 

[The Brad]

Whats the secret to uploading multiple pics in 1 post? I see where I can add 5 files, but only the last one added shows up.

 

[Gearhead]

If its not proprietary, where would you set icp@idle on a truck with hybrids?

500-550

 

[mandkole]

I did not own the truck then to know the details, but why would a tuner need to go to around 800psi@idle for 250/100s? If at 500 psi stock pcm levels, it will stumble around if you touch the throttle.

Just questions, but cool information... Ive always wanted to know this.

 

[Gearhead]

One would think that an injector can fire reliably at a stock ICP level unless there is something wrong with it.

 

[lincolnlocker]

true dat^^^

live life full throttle

 

[The Brad]

Here's some screen shots I took from AE last night.

 

[The Brad]

I ran a CCT and it passed while in park, but in drive, it failed #6. That's the first time I've see it do that. I'm gonna climb in there tonight and make sure I didn't pinch or roll an O-ring.