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To all who have done performance mods... have you also tweaked the PCM to get the best out of your C??

I want to due some mods in the spring but was thinking that I should wait until the computer could be 'hacked'.

Since I have yet to read of any mods to the PCM, I'd thought I'd ask.

Thanks
 

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Yeah, I haven't heard much about tuning Chrysler's PCMs. I got guys at our shop asking about oversized wheels and it puts us in that position to tell them they would void any warranty. But I know it can be done with PCM tuning. It's just a matter of time before it happens with these cars. Just like GM's and Ford's PCMs ability to gain performance advantages, I'm very interested to see what can happen with these cars. :cool:
 

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joecool72, define "oversize" wheels for warranty purposes....

I have heard of many DC dealers (both Dodge and Chrysler) adjusting the PCM for wheel/tire combo's they are selling off the lot.
 

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I agree with 5point7

Dealers are more then willing to sell tire upgrades, without it voiding anything.

Also, there are laws to protect against such vagaries if they were to arise.

I am sure one of the site members can refresh my memory as to what the name of the law is?
 

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That's an excellent reference. Thanks.

BTW, I'm sure everyone recognizes that changing the tire diameter requires reprogramming, otherwise everything based on the VSS (vehicle speed sensor) will be wrong (speedometer, shift points, nav, etc).

Therefore, they must already have some facility to do that. I'm sure the Hypertech people are already working on this.
 

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developerx said:
That's an excellent reference. Thanks.

BTW, I'm sure everyone recognizes that changing the tire diameter requires reprogramming, otherwise everything based on the VSS (vehicle speed sensor) will be wrong (speedometer, shift points, nav, etc).

Therefore, they must already have some facility to do that. I'm sure the Hypertech people are already working on this.
The software that the dealers should have is already capable of doing that adjustment if the techs know how.
 

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the techs at work have said that larger than the stock 18s may cause problems with the ESP system.

i would not jeopardize handling and control for looks
 

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developerx said:
That's an excellent reference. Thanks.

BTW, I'm sure everyone recognizes that changing the tire diameter requires reprogramming, otherwise everything based on the VSS (vehicle speed sensor) will be wrong (speedometer, shift points, nav, etc).

Therefore, they must already have some facility to do that. I'm sure the Hypertech people are already working on this.
Unless the ESP system uses weight/pressure in it's calculations if you purchase the right size tires the diameter should be close enough, hell with that thinking when your stock 18's get 20K on them (hence the tread depth is less, therefore diameter is less) you would be required to reprogram, I don't think so.
 
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