Jump to content

Recommended Posts

Hi I have a few questions I would like to get clear before I start wiring 

New g4x atom - motor is Mazda kfze v6 with ITBS and stock injectors 

toyota coil on plug coils 
crank trigger 36-1 and VR sensor- have option for a cam sensor in old distributor housing with stock hall sensor 

have been reading here and on hPa about tps only and alpha N tuning 

main questions so far are is there any benefit to add the cam sensor and go semi sequential injection ? If I set for batch fire it only allows 2 injector outputs - can I run 3 high impedance injectors on each injector output ???

Or is it better to go semisequential and wire injectors in pairs ? 

If I only need 2 injector drives can the 2 spare injector drives be used as ignition drives ? Or is wasted spark and batch fire the easiest simplest option ? 

Have looked at fuel maps for alpha N setup with RPM on X axis and TPS on Y axis and using very gradual throttle values to help tip in - like 5% 10% 15% at the start then ramping up so that makes sense - what about ignition map ? Same with RPM on X and TPS on Y axis in the same sort of curve 
mode set as BAP 

There are quite a few of these engines converted to itb worldwide but 95% of them are on MS - I do have access to a good ripped stock ignition map and have looked at a g4+ map on here but it’s not itb 

Really trying to keep this as simple as possible only other outputs are fuel pump - Davies Craig water pump - and radiator fans - no ac no IAC no power steering idle up 

next purchase I’m looking at is spartan 2 wideband 

Any ideas thoughts appreciated thanks for reading wall of text 

Link to post
Share on other sites

I cant see a good way to do semi-sequential on this engine due to the 123456 firing order.  So to keep it simple I think I would do multipoint group.  You can use 3 drives wired to a pair of injectors each and set active drives to 1-4.  

Ign will have to be wasted spark.  Spare ign drives can be used as aux outputs, but spare injector drives cant on the Atom.

I have attached an typical ITB fuel map (modelled fuel equation) and Ign table that will be a decent starting point.




ITB Fuel Table 1.lte ITB Ignition Table 1 (+ °BTDC, -- °ATDC).lte

Link to post
Share on other sites

Ok cool I was having a play around looking at multipoint group at could only seem to get INJ  1-2 active but will try that again and have a look at settings provided and help file again 

Theoretically with that and wasted spark setup the only other things required for a start are - Timing setup - calibrated TPS - engine coolant temp sensor table - IAT table- and whatever Lambda setup I choose 

So good to be using an NZ made product with outstanding tech support 

Link to post
Share on other sites

Oh, I forgot to say also, if you are going to run a missing tooth crank wheel, then there is no need for the cam sensor in this multi-group/wasted spark set up.  Set sync mode in trigger 2 settings to "none".

Link to post
Share on other sites

Yes thanks I figured that and it gives more room back of the engine - last model of this engine had 36-1 and coil pack so I bought the trigger wheel pulley and the cam blanking plug and have now depinned that trigger from the link loom 

Link to post
Share on other sites

ok so how do i get those tables into my setup ? .lte files? have loaded pcl tune files before and used the clipboard to grab tables from on tune to another but how and where can i use them after download ?


okay got that import from file ..... time for more reading i think

Link to post
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.

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.

  • Create New...