Factory freak PCM?!

soul_sword34 · Post by **soul_sword34** » Sat Oct 24, 2009 2:49 pm

Finished my MTX swap and just got back from a quick run and found out my ATX PCM revs to 6,700 rpm. It hits 6,500 and goes a little past then it cuts the engine. Is that normal? I thought and have always thought we needed to switch to a MTX PCM to get a higher shift. Mine is a 2000 PCM so.....

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heydockyle · Post by **heydockyle** » Sat Oct 24, 2009 2:50 pm

Pretty sure that's normal. Just shouldn't rev any higher than 4500 in neutral. But I could be wrong.

NickKo · Post by **NickKo** » Sat Oct 24, 2009 5:10 pm

soul_sword34 wrote:Finished my MTX swap and just got back from a quick run and found out my ATX PCM revs to 6,700 rpm. It hits 6,500 and goes a little past then it cuts the engine. Is that normal? I thought and have always thought we needed to switch to a MTX PCM to get a higher shift. Mine is a 2000 PCM so.....

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Yes, 6750 RPM is correct for an ATX PCM.

From what I have heard / read, Chrysler limited the ATX PCM's to 6750, due to the limitations of the torque converter.

- Nick

heydockyle · Post by **heydockyle** » Sat Oct 24, 2009 5:17 pm

MTX PCM is also 6750

NickKo · Post by **NickKo** » Sat Oct 24, 2009 5:28 pm

heydockyle wrote:MTX PCM is also 6750

I will go back and look..... 2nd gens may all be the same.
MTX PCM's on the 1st gen Neons had a higher rev limit, depending on the PCM and the engine (DOHC vs.SOHC, Mopar Performance, AFX, etc.)

- Nick.

heydockyle · Post by **heydockyle** » Sat Oct 24, 2009 5:30 pm

I know mine revs to 6750 and it's 2gn mtx...

soul_sword34 · Post by **soul_sword34** » Sat Oct 24, 2009 8:42 pm

so there's really no reason to change the PCM out with an MTX swap then, other than the torque lockup check engine light.

gilly02le · Post by **gilly02le** » Sun Oct 25, 2009 6:35 am

i'm hoping it will work the same for the 2002's when i do my swap. Since i don't feel like having to get another pcm and have it flashed, just to make the car run.

heydockyle · Post by **heydockyle** » Sun Oct 25, 2009 10:26 am

There is a reason to change it, just cant think of it.

Pretty sure you can't free rev it above 4500. Thats one reason.

n20sxt · Post by **n20sxt** » Sun Oct 25, 2009 12:01 pm

heydockyle wrote:There is a reason to change it, just cant think of it.

Pretty sure you can't free rev it above 4500. Thats one reason.

sweet by not changing the pcm it comes with launch control too lmao

soul_sword34 · Post by **soul_sword34** » Sun Oct 25, 2009 12:49 pm

gilly02le · Post by **gilly02le** » Thu Oct 29, 2009 5:53 pm

won't rev above 4000 if the clutch is pushed in... CEL will likely be on. otherwise all good.

2GN.ORG

Factory freak PCM?!

Factory freak PCM?!

Re: Factory freak PCM?!