:confused: If I shift in to neutral at any speed above 15/20 mph the rpms will climb out of control & have to shut it down. Also get P2173 high air flow & engine shuts down at times. Anybody got any ideas? Software issue? Map sensor?

I'd start by cleaning the MAF sensor
Is your filter dry or oil?

No MAF, MoPars have a weird air speed density formula the pcm uses.
The AirAid uses filter oil. I did clean & re-oil it about 4 months ago. Maybe the air temp or map sensors got contaminated with the fresh oil?

No MAF, MoPars have a weird air speed density formula the pcm uses.


It's not wierd, it's what Chev guys upgrade to.:D :engarde:

Try putting the tune back to stock and see if the same problem exists. I know when my tune was completely screwed last winter my truck had similar issues.

ahh, my bad.
Keep us updated.

:confused:Just got truck back today from a second attempt to fix problem by making tuning changes. No luck. It will also not decelerate normally in city driving, very slow to respond to letting off the gas ( almost like 30 mph cruise control ). Tried changed t-bodies, no difference. I"m almost ready to through the stock cam back in. Driveability has been this way since cam & head install. But I'm not giving up yet, the wot performance is what I was going for and got no complaints there!

u should take a look at ur TB

Tried a new t-body, no change. If it's not the tune, I'm stumped. Anyone have experience with this cam, ( Comp 273H ) in a Hemi Ram?

that sounds a lot like the Throttle Cracker needs adjusted. I had to adjust mine after the cam install and again after putting a 9" converter in.

:confused:Do you mean adjust the butterfly opening in the t-body? Mine is all enclosed with no obvious adjustment points ( drive-by-wire ).

check the map sensor i had similar issues wen mine got plugged

:barf:So far I've tried a new t-body, iat sensor, map sensor ( had to grind down a couple tabs on the manifold). No change. It's the tune or maybe the pcm??

I was thinking something like GM's throttle cracker/follower but Mopar is likely a lot different along that aspect. It controls how quick the throttle releases and If it's set too high it will act as a cruise control.

Have you tried Modern Hemi at the top of this forum? Your pt.net login will work there.

sounds like you have a vacuum leak or the tune is way off. Who is tuning it

Have you tried Modern Hemi at the top of this forum? Your pt.net login will work there.

There is nothing there but porn spam.:eyes:

Sounds like this needs to simply be tuned properly for the cam.

How is it tuned currently, if at all?

We offer full custom tuning for these HEMI Rams, let me know if you need anything.

Hemifever has tuned a few comp 273s. He can fix your airflow issue assuming that you do not have. Mechanical issue. I would contact him he is very knowledgeable and right now an sct tuner is $375 shipped with unlimited custom tuning.

Email him at hemifever@aol.com

Hemifever has tuned a few comp 273s. He can fix your airflow issue assuming that you do not have. Mechanical issue. I would contact him he is very knowledgeable and right now an sct tuner is $375 shipped with unlimited custom tuning.

Email him at hemifever@aol.com
How do you do unlimited tuning via email when they have no datalogging support at all?

Logging alone makes the Predator the better option....

DTC P2173 IN DIAG. INFO SHOWS POSSIBLE LARGE VACUUM LEAK OR PROBLEM W/ TPS..:hmmm:

Since you had the heads off, i am assuming that you also had the intake off. I would look into a possible vacuum leak as noted by the code above.

I was all in the tuning. Special thanks to Marty & Sean at KRC Performance! I was very close to putting the stock heads and cam back. It now runs like I knew it could. Long live MoPar !!!!

Good to hear!

Enjoy....