2012 Ram Hemi 5.7 L

[Macprocontractor]

New Motor installed. Upgraded the intake manifold to 6.4 intake. The install, electrical, and hose hookups all fit great. installed the 6.4 fuel rails & injectors. All works fine except when the rpms get to around 1,100 & up to 2,000 rpms the motor hesitates or skeps excessively. When put in tow/hail mode not as bad or as often. Has Anyone had this issue or problem & gotten this resolved? Any help or suggestions would be much appreciated.
MC

 

[DILLIGAF]

You need a custom tune.

 

[Brandon-w]

If it's tuned could be a torque converter issue possibly..

 

[Wild one]

New Motor installed. Upgraded the intake manifold to 6.4 intake. The install, electrical, and hose hookups all fit great. installed the 6.4 fuel rails & injectors. All works fine except when the rpms get to around 1,100 & up to 2,000 rpms the motor hesitates or skeps excessively. When put in tow/hail mode not as bad or as often. Has Anyone had this issue or problem & gotten this resolved? Any help or suggestions would be much appreciated.
MC

Are you running your stock 5.7 injectors with a spacer,or the 6.4 injectors.If you have the 6.4 injectors,get the spacers replace them with your 5.7 injectors,it takes a pretty decent tuner to scale the 6.4 injectors to work properly in a 5.7

 

[Macprocontractor]

Yes the the 6.4 fuel injectors are in. I do still have the 5.7 injectors. But I would like some suggestions on a very good tune that I can purchase. I’ve found several from starting at 400 up 700.00. I don’t want to spend that kind of money until I get some decent referrals. Any suggestions appreciated!

 

[Wild one]

Yes the the 6.4 fuel injectors are in. I do still have the 5.7 injectors. But I would like some suggestions on a very good tune that I can purchase. I’ve found several from starting at 400 up 700.00. I don’t want to spend that kind of money until I get some decent referrals. Any suggestions appreciated!

Get rid of those 6.4 injectors,buy the spacers to re-use your 5.7 injectors first.

 

[Macprocontractor]

Ok, I’ll get the spacer, put them in. Should not be a need for a tune afterwords?

 

[Wild one]

Ok, I’ll get the spacer, put them in. Should not be a need for a tune afterwords?

I wouldn't go that far,as i know nothing about your rebuild,other then you installed the 6.4 manifold and injectors,but swapping your stock 5.7 injectors back in,should make a noticiable differance in the way it runs for now.

 

[Macprocontractor]

Any suggestions on where to shop for those spacers?

 

[Wild one]

Any suggestions on where to shop for those spacers?

5.7L HEMI Injector Spacers for 6.4L HEMI Intake Manifold Conversion Kit by MMX

5.7L HEMI Injector Spacers for 6.4L HEMI Intake Manifold Conversion Kit by MMX

www.modernmusclextreme.com

5.7 hemi injector spacers - Google Search