EFI Conversion Guide?

[TheOrteganator]

Recently swapped a JWT 3.1 Stroker into my car, and after working with the timing and still running like crap I've decided to ditch the carbs and go to EFI. I've hated carbs for as long as I can remember and as great as I'm sure the triples can perform I just don't want to deal with them. With some tuning I'm sure I can be making far more power with an EFI setup.

 

What I'm looking for is a how to guide or FAQ or something to guide me on what parts I need and such. I already have an EFI intake manifold I believe from a 280Z, and it has the injectors (will probably replace to be safe) and everything attached to it but the harness is cut.

 

Tried searching but couldn't find any complete guide if there is one.

[FlatBlack]

Do you have a stand alone in the budget?

 

I'd suggest going with a brand new setup with your L31 rather then trying to make an old stock 280Z EFI harness work. You'll also have control of Fuel and Spark depending on which one you go with.

[S30TRBO]

 

There is no specific guide that I know of for the L. You can buy the "How To EFI" books or search the internet for ideas. I had to search and search and read and read on this site to find my answers.

 

Look into http://www.extrudabody.com/ with a basic fuel/spark EMS would be nice. It all comes down to budget in the end.

 

Check out my Z build page for ideas: http://forums.hybridz.org/showthread.php?t=135786

[TheOrteganator]

 

There is no specific guide that I know of for the L. You can buy the "How To EFI" books or search the internet for ideas. I had to search and search and read and read on this site to find my answers.

 

Look into http://www.extrudabody.com/ with a basic fuel/spark EMS would be nice. It all comes down to budget in the end.

 

Check out my Z build page for ideas: http://forums.hybridz.org/showthread.php?t=135786

 

Unfortunately $1800 is not going to be in the budget anytime soon for a set of ITBs. Without a doubt that's the way I'd like to go but I still have brakes, cage, and wheels/tires to do before it's track ready so those take priority over ITBs.

 

I do agree that I should probably do something with more tuning capability like a MS setup, I guess I was just more drawn to the stock EFI since it would be plug and play and I'm not very confident in setting up my own system.

 

So basically to do the MS and similar setups you just need to link the different sensors and parts together with the ECU and set the parameters?

[e_racer1999]

Basically. Plus there are many, many MSQ files on this site that you can use as a starting point if you decide to do MS.

[PanzerAce]

What's the problem with the engine right now? Not trying to get you off of EFI (I'm going to be swaping to it myself when I get the money and build my other Z), but it seems like you might atleast want to get the current engine setup running first.

[TheOrteganator]

Set the timing at 34* which from a few sources seemed to be about right, has terrible miss at high RPM and won't rev over about 3500-4000 under load. Needs carb tuning which I don't have half a clue to do or really even care to know, I'm new to the whole new retarded brainless car thing.

 

My friend is going to tune them for me and at least get it running decently but long term carbs are not something I want to deal with.

[DuoWing]

I think the biggest problem you may have with converting to EFI and trying to use a stock harness or EFI setup from a 280Z or 280ZX will be that you probably won't have some of the needed sensors in place. Depending on the motor that was used for your 3.1 it could be easier or harder. You'd almost be better off building a standalone. The wiring can seem daunting at first, but if you work with it, study wiring diagrams, you'll understand it soon enough.