Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum > HEI and Nutter Bypass together

Join Wrangler Forum Today

Thread: HEI and Nutter Bypass together Reply to Thread
Post Icons
You may choose an icon for your message from the following list:

Register Now

In order to be able to post messages on the Jeep Wrangler 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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
09-07-2008 10:56 PM
brtt485 None of you out there have done this?
08-27-2008 04:27 PM
HEI and Nutter Bypass together

I am somewhat of a newbie and am getting ready to install the HEI ignition in my 88 YJ and have a quick question about the order of things when combining the HEI with the Nutter and was hoping you guys might be able to help me out. I have done a ton of research on both mods and understand how they work but there are some steps in the process I am struggling with when combining the 2 mods.

Following the instructions I have found I am going to install the HEI, start the engine, and adjust the timing. Then I am going to remove the stepper motor from the carb, adjust the metering pins, replace the stepper motor then start the engine and adjust timing and idle again.

Is that correct?

Also, if I understand the Nutter instructions correctly, I am supposed to run the engine until it is operating in closed loop mode if the ECM is still functional. Two questions on this, by going with the HEI am I eliminating the stock ECM? And two, if not, how do I know when it's running in "closed loop mode"?

There is also mention that you disconnect the connector from the stepper motor. This will remain disconnected from this point forward correct, it will never be reconnected?

I really appreciate any help you guys can provide. As a new Jeep owner I am going to owe a lot to guys like you who are taking the time to provide valuable information to guys like me. I just want to have a thorough understanding of what I am doing before I start tearing things apart.

This is where most of my instruction has come from: The "Nutter" Bypass with the HEI Upgrade for the AMC 258

Posting Rules
You may post new threads
You may 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

All times are GMT -5. The time now is 03:58 AM.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC. is not in any way associated with the Chrysler Motors LLC