Is that harness sold already?????

Wow... This is cheaper than buying a megasquirt and DOING IT YOURself.. .NICE WORK!!!!!!!!!!!!!

IWANT ONE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!

I have just ordered my LT4 XD Timing chain.

 

so how do we get one?

 

http://www.eficonnection.com/eficonn...ontact_us.aspx

 

I cant wait 'til this becomes available Wonder what problems they ran into with the 24x reluctor wheel?

 

what do you mean problems?? what problems??

 

Highlander, you get Mike's email updates, don't you.

 

Here's what eficonnection sent me in an updated email.

24x Reluctor Testing
Our testing was not successful with the custom 24x reluctor. While the 24 tooth pattern on the custom reluctor matches the LS1 PCM crankshaft signal requirement, we were unable to receive the required 24 pulse signal. We have studied our results and came up with a few different approaches. Until we have a working prototype, the reluctor is in a development status.


EB

 

i thought they had this working?? how old is that email??

 

couple a days

 

We have the system working in three engines using modified GM reluctors. We're coming up with a cleaner reluctor designed to fit the small-block and LT1. The modified reluctor will not fit the LT1 engine (another reason why we're coming up with a new one). We're close to a solution, making changes to our reluctor, and will soon retest.

Mike
EFI Connection

 

Anyway to make it work with a double roller timing chain??? Will the PCM still work in a 98-02 car?

 

What was the OEM PCM in the vehicle?

 

I'm putting my LT4 into my 99 T/A, and this would make it a cake walk, vs trying to get my 95obd1 pcm to work with the 99 car. Plus Im boosted and the LS1 pcm is wayyyy better

 

The 24x reluctor under development by EFIConnection is in regards to a single roller for the Gen 1 and LTx, as well as a reluctor for the Gen 1 only double roller. They (all three) were briefly offered for sale. However with the recent glitch found in testing, all three have been put on hold pending further development.

I don't even want to know why you are considering swapping from the LSx to the LTx.

Edit: OK, so maybe you'd rather keep the existing FI hardware in lieu of changing to hardware to accommodate the LSx. But still....

The use of the LSx variety of PCM is contingent on the development of the reluctor. Attempting to adapt the LTx Opti signal to the later PCM would be swimming upstream against a headwind right after/below the falls. If one were to insist on using an ignition in the rear as an alternative, then why not go to a Gen 1 assembly? You're merely be giving up the overzealous cooling of the existing reverse cooling system.

Bottom line... Less grief to get the 24x reluctor sorted out.
Hang loose and patience! It is in good hands with Mike working on the solution.

 

The 24x reluctor, yes it will clear the double roller chain. BUT it is impossible to fit the timing cover. We've looked very closely at this (and wasted time and money trying) to find that it is impossible to use an LT1/LT4, double roller timing chain, and ANY type of crankshaft reluctor. There is not enough room. I promise you, it can not be done without a redesign of the timing cover.

Absolutely, your LT4 engine swap into an LS1 car would be fairly straight forward.