srt injectors? - Jeep Commander Forums: Jeep Commander Forum
Programmers/Engine Mods Questions or advice about programmers or engine mods? This is the place...

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 11-02-2013, 10:43 AM Thread Starter
Junior Member
Points: 2,099, Level: 27 Points: 2,099, Level: 27 Points: 2,099, Level: 27
Level up: 66% Level up: 66% Level up: 66%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Aug 2013
Location: mnt city TN
Posts: 28
srt injectors?

I just purchased the diablo trinity tuner and was wondering if anybody has tried putting str8 injectors in there 5.7? Ive installed a cold air kit,and I'm installing Hotter coil pacs with platinum spark plugs. and cat exhaust. Just wanting to get as much performance as i can with out getting inside of it. Has anybody done this? Does the programmer bump up the fuel pressure on performance modes or does there need to be additional Programing? I saw were someone was saying they installed a map senior from a str8? Anyway-apreciate it-Keep on jeep-theres only one :-)
wingcover is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 11-02-2013, 12:52 PM
Super Moderator
Points: 58,763, Level: 100 Points: 58,763, Level: 100 Points: 58,763, Level: 100
Level up: 0% Level up: 0% Level up: 0%
Activity: 31% Activity: 31% Activity: 31%
 
jeep5253's Avatar
 
Join Date: Jun 2006
Own a Commander?: Yes
Model year: 2006
Trim Package: Limited
Power-Train: 5.7L V-8 Hemi
4WD
If 4WD - system: QD-II
Posts: 14,824
People using anything but the OEM Champions in the HEMI have had problems.

2006 Steel Blue 5.7L HEMI Limited 4x4 Build Date: June 9, 2006 Hour 14
Interior: Dark Slate/Light Graystone with Saddle Brown Leather Seats
Quadra-Drive II, NAV, DVD, Trailer Tow Group IV, Off-Road Group II, Remote Start, UConnect, Rear Backup Camera, Chrome Wheels,
Magnaflow cat-back exhaust, Daytime Running Lights enabled, 2" Rough Country Lift with 265/70R17 Goodyear Wrangler AT/S
jeep5253 is online now  
post #3 of 7 (permalink) Old 11-02-2013, 08:24 PM Thread Starter
Junior Member
Points: 2,099, Level: 27 Points: 2,099, Level: 27 Points: 2,099, Level: 27
Level up: 66% Level up: 66% Level up: 66%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Aug 2013
Location: mnt city TN
Posts: 28
Thanks- I'll check that out. I bought OEM's as well (something told me-so-may have to use them instead. There was a guy talking about the diablo Ituner and he was talking about these injectors with a turbo kit. He was a Chrysler programmer or something? I can't find that thread-still looking. He was talking about set map sensor etc….. Any Body Know who that was???-got a feeling he could tell me what i need to know.. Thanks …..
wingcover is offline  
 
post #4 of 7 (permalink) Old 11-07-2013, 05:43 PM Thread Starter
Junior Member
Points: 2,099, Level: 27 Points: 2,099, Level: 27 Points: 2,099, Level: 27
Level up: 66% Level up: 66% Level up: 66%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Aug 2013
Location: mnt city TN
Posts: 28
OK, so the trinity went back-didnt see it was for windows only-duh. Im not going back :-). So i bought the diablo intune and installed it today. Totally happy with it,especially tranny points-can def tell the difference. Still wondering and checking on injectors and coil pacs. Installing plugs,& o2 sensors tomorrow.
wingcover is offline  
post #5 of 7 (permalink) Old 11-20-2013, 07:09 PM
Junior Member
Points: 2,541, Level: 30 Points: 2,541, Level: 30 Points: 2,541, Level: 30
Level up: 61% Level up: 61% Level up: 61%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: May 2012
Posts: 18
For what reason are you upgrading. Injectors are not going to give you any more power, they just flow more in case your engine has the airflow to demand it. Now when you start running heads and cam or faced induction or even e85 you will need a larger injector but with your setup your factory injectors are the best for what you are doing.
bijanmaleki is offline  
post #6 of 7 (permalink) Old 11-20-2013, 09:19 PM
Senior Member
Points: 15,906, Level: 81 Points: 15,906, Level: 81 Points: 15,906, Level: 81
Level up: 12% Level up: 12% Level up: 12%
Activity: 0% Activity: 0% Activity: 0%
 
Mongo's Avatar
 
Join Date: Oct 2010
Location: Lusby, MD
Posts: 3,037
bijanmaleki is right.

Just putting in bigger injectors is going to do nothing but lighten your wallet. Pumping more gas into motor doesn't produce more power, it will produce less power. Besides, the electronic control of the engine won't let it happen anyway, it will recognize the A/F ratio being to rich and then adjust the injector pulse width and return the amount of fuel being injected back to normal.

Same thing with coil packs, its rare that modern engines have a weak spark, the stock ignition is more than strong enough. Making a hotter spark then is needed is NOT going to do anything to increase power.

The PCM reprogrammer is the only thing you mentioned that will actually improve power and it will likely do it by leaning out the A/F ratio at WOT, as well as advancing the ignition timing.

Next thing to do to get more power is increase the air flow into the motor, that is aftermarket intake systems, low restriction air filters, exhaust as well (you can't flow more in then you flow out), headers and low restriction Catalytic Converters, exhaust systems, mufflers. Even with these mods, you're NOT likely to exceed the capacity of your stock injectors and ignition.

Then you get into internal mods, cams, port/polish heads and manifolds, increase compression ratio. Super/Turbo chargers, etc. When you start getting into these mods, you do start to exceed the capacity of the stock injectors and ignition, and then you would upgrade those items.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Mongo is offline  
post #7 of 7 (permalink) Old 09-07-2015, 07:34 PM
Senior Member
Points: 10,034, Level: 66 Points: 10,034, Level: 66 Points: 10,034, Level: 66
Level up: 96% Level up: 96% Level up: 96%
Activity: 0% Activity: 0% Activity: 0%
 
Mk153smaw's Avatar
 
Join Date: Dec 2014
Location: East Meadow, NY
Own a Commander?: Yes
Model year: 2006
Trim Package: Limited
Power-Train: 5.7L V-8 Hemi
4WD
If 4WD - system: QD-II
Current Mileage: 120000
Posts: 309
Garage
For what it is worth, I am only going up 4lbs of rating by using the stock SRT injectors and I a going to put a turbo system on. You have to add all the extra stuff before you add fuel really. I do my fuel last usually after I check my A/F monitor to see if I am too lean without being able to fix it on the software side.
Big danger of lots of fuel is washing the cyclinder walls with fuel and wearing out your rings faster. Albiet, this takes a big increase in spray. If you do end up getting some ensure they are actual 30lb injectors... Some if the bigger SRT engines can have up to 60lbs, and that will get annoying if you got the wrong ones and tried to figure out the tune. My 30lb injectors have a yellow band on the bottom of the injector.

Dave

'06 Hemi Limited 4X4, 6(ish)" lift, 35" General Red Letter, 2" spacers, Mopar CAI, RER and mygig lockpick, blue Interior LEDs, stub antenna 3", Callahan Red Brake set, 6.1L SRT8 exaust headers, full custom 3" exhaust from headers back, Fastman 847 ported TB, BBK Fuel Rails, 6.1L injectors, JBA UCAs, Nitro gear 4:10, SA hidden front winch mount.
Mk153smaw is offline  
Sponsored Links
Advertisement
 
Reply

  Jeep Commander Forums: Jeep Commander Forum > Jeep Commander Discussion > Performance Modifications > Programmers/Engine Mods

Tags
02 sensor. , cold air , exhaust , map senior , tuner

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Jeep Commander Forums: Jeep Commander Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome