Jump to content

3.9 ECU on 3.5?


NRS91
 Share

Recommended Posts

Hey guys

i was just wondering if a 3.9 ecu will work on a 3.5??

if so would i be looking at any power increases?

would is bring the 3.5 on lpg closer to standard?

and i would like to know where i could get an ecu extension loom?

Link to comment
Share on other sites

i was just wondering if a 3.9 ecu will work on a 3.5??

In a pinch it probably would, assuming you're meaning swapping a 3.5 Hotwire ECU for a 3.9 Hotwire ECU, or flapper for flapper. The flapper and hotwire are not interchangeable with each other as there were changes to the injectors and rather obviously the ECU plugs are different.

if so would i be looking at any power increases?

Hell no.

would is bring the 3.5 on lpg closer to standard?

Nope.

and i would like to know where i could get an ecu extension loom?

Buy some wire, some heatshrink, and some solder is probably the easiest option.

I'll rather predictably say MegaSquirt is probably a more suitable answer to your problems.

Link to comment
Share on other sites

i meant lpg power...

and i had heard that using a 3.9 ecu would bring power increases...

what are the main differences between 3.5 and 3.9 ecus?

ive seen one the same type as mine for sael thats why i ask

Link to comment
Share on other sites

i meant lpg power...

And I meant "no", if your LPG system is running incorrectly I'd look at your LPG system, not the original ECU.

and i had heard that using a 3.9 ecu would bring power increases...

Well, it would probably bring a mixture of over-fuelling and occasional under-fuelling.

what are the main differences between 3.5 and 3.9 ecus?

Like-for-like, one will have the correct fuel map for a 3.5 and one will have the correct fuel map for a 3.9.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...

Important Information

We use cookies to ensure you get the best experience. By using our website you agree to our Cookie Policy