Whats a PCM flash and what does it do?

 

The PCM is the brane of the truck. When you do mods to your truck, the stock PCM dosen't
really know what to do for the things that you changed. When you flash it, they flash your PCM
to the mods that you did. Befor you flash the PCM you have to tell them what you did to the
truck. Like what name CAI, HEADERS, EXHAUST they need to know everything so they can do it right.

 

It is always best to find out things for yourself.

Aftermarket CAI's are usually poor investments
unless you are satisfied with more noise and flashy colored parts.

If you must buy one
buy from a retailer who will let you return it
'no questions asked' including a refund of postage.

Measure your IAT and MAP sensors before the CAI
along with some stopwatch and/or quartermile accelerations.
Then measure afterwards.

You will end up returning the CAI if you were looking for performance.

If you read a magazine report on a dyno test of a CAI
pay close attention to see if they are actually testing
a very old paper filter that has been run for days on a dusty road
behind another vehicle...or whether they test a new paper filter
against a new CAI like is the proper way.

Here are two tests where CAI's were tested better
than they usually are:

http://tinyurl.com/2j4gx3

http://www.dieselpowermag.com/tech/g...ers/index.html

 

I always thought that more HP means more gas thus less mpg. You are thinking on spending all that money on headers, cai, gear to get more power, why didnt you get the V8?
Believe me, the V6 will never get the mpg stated on the sticker, that is an outright lie. When my truck was stock the max I ever got was 18mpg and that was babying it. When the wheels and exhaust were put on, it dropped to 15.5mpg. When I put on the Liberty Intake as a CAI and stock muffler, I was up to 17.5mpg. Now I have the Liberty and the FLow 40, and I am down to 16.5mpg.
With the Liberty Intake and stock muffler, I could hear the engine rumble nicely at high rpms, but now the 40 just overpowers the engine sound.
Mopar does make a CAI, but you have to dish out about 4 bens for it.
Look at my gallery to get an idea.

 

Well coming over from an import car I have learned that it isn't just the parts you put on but its also extremely important to have the vehicle re-tuned as you add parts...the ECU have to be trained to accept the new properties of the motor now that u have opened up the intake and exhaust ends. If you just slap on parts and never tune the ECU only has a certain amount of compensation....but if you tune it with a programable ECU you can get max performance and efficiency.

I didn't spring for the V8 because I too was decieved by gas mileage...at the time I was not interested in making much power, I just wanted something nice looking that I could drive around. After speaking to a few other ram owners and people who have done some slight mods..i realized these engines are restricted a lot and just need to be opened up a bit to realize their full potential. I'm not asking for a tire roasting monster...I just want a little bit of get up and go mixed with a decent amount of torque while keeping a decent MPG and I will be perfectly happy.

 

Welcome to the "Deceived By Dodge Club" or DBDC.

When you says ECU, is that the same as the PCM?
I thought these trucks learn as you go, from the regearing to intakes, supposdely the computer learns on its own. At least I thoughts, I could be wrong. Like my friends silverado, if he changes the gears, he has to reprogram his pcm/ecu.

 

If you regear it can be a good thing just dont go to far in either direction you will gain lowend and lose topend or gain some MPG but lose power beware.

I owned many Lifted oversized tire 4X4 been down that road many times before as for the recaling of the PCM most newer cars and trucks get there speedo readings from the tone ring in the rear end if you keep the same dia tire you should not have to redo the speedo readings.

I been thinking of regearing my truck from 321 to 373 or 390 it will give more out of the hole but will not be winding 3200RPMs at HWY speeds more youRPMs you turnmore gas you use, Yes RPMs are you freind thats where you make power at but it will cost you.

I found I rather rev a little on the high end as in 500 to 700 RMPs more than stock up on the Hwy you dont lose that much for MGP but off the line out of the hole and for towing you love it, If you go to far as in lower gear set sure you rip the tires off the truck beening burn out master but when you are RPMing 3500 at HWY speeds getting 7 MPG you be hatting life besides that I know I did not buy the V-6 for beening a power house I would of gotten the SRT10 for that.

 

Yeah, sorry I am still stuck in the Import world...ECU is more than likely the excat same thing as a PCM. I am not sure if they learn as you go...I mean, I'd imagine the factory sets its PCM's to certain perameters to meet standards. Once you start changing things I don't see how it could correct itself all that much. Which is the reason they have SuperChips or JetChips.

I know the truck will never be fast...or even be the best on gas...I'm just asking for a happy medium since I am stuck with it for the next 5 years. Additionally, I want it to be a little more aggressive looking. I plan on putting on a nice set of 22's with some beefy tires (I don't like the rubberbands most people put on larger size wheels), and I also want to level her out and lift her maybe 2 or 3 inches.

 

You can kiss the mpg goodbye. You will need to regear your truck for bigger tires. I dying to do that, but I have to pass it by the wife first. Its 5 bens and if I want LSD, its more.

 

Yeah, I am planning to re-gear...from what I gather, the tranny's on these trucks are garbage anyway. I'm not overly concerned with MPG to be honest...I would say 75% of my driving is done on the HWY at 75MPH anyway.