I'm looking HARD at going multi-port EFI on my 360 mopar. its got a medium sized cam, and with an 850 double pumper and a victor Jr. single plane, it made 390 horse at the rear wheels at 5700.

i since swapped in an edelbrock 750 and dual plane to get some drivability for the car, as well as some more manifold vacuum.

this current combo, though more drivable, is down on power and STILL does not give me the drivability and such that i am looking for.


therefore, I'm looking at going MPFI. i have decided against TBI, even though it would look more correct under the hood. the drivability benefits of multi-port are just so much better.

i have not decided whether I'm going to modify the dual or single plane yet. more research on that one before i spend the money.


where I'm really struggling is the decision for the ECM. I'm looking to do this inexpensively (not exactly free, but not over 1000 for the ecm) in the end i want ultimate drivability and reliability, with no hiccups, gremlins, oddities, etc.


so, with these parameters of motor and injection style in place, Ive got a few options for ecm that i know of, and two that REALLY stand out to me.


1. use a TPI corvette/camaro ECM. reasons being that they are dirt cheap, i have a vague understanding on tuner pro (not good AT ALL), and the injection and displacement are similar to what i want to do. harnesses are easy to make and modify, lots of support, and also the ability to run knock sensors and timing control. don't know if i have the option for auto tune or wide band o2 control with these systems and tuner pro, though. also have no idea where id mount a knock sensor on my motor. have to do data logging and burn many chips to get the combo dialed I'm though.


2. megasquirt 2 or 3. they have a really good auto tune feature, the tuner studio looks pretty straightforward, i know they accept a wide band o2 sensor. can use pretty much anything i want and this ECU will support it. seems to have a bunch of support for them, reasonable price. have to custom fab a whole harness instead of modifying a stocker, and have to figure out a lot more of the engineering for the system than the GM ECM. but more tunability, no chips, etc. lots of pros, lots of cons. can also control pretty much any accessory, and does timing.


so, i know there are others out there as well, it just seems like these are the two that are right up my alley.

so, which system would you use (even if its not either one of these) and why?

Michael

 

Cheapest is Stock GM. But if you are now to tuning. easiest to learn and best support is EBLFlash ECU and datalogging system(learn features). check it out at dynamicefi.com.

See the EBL original thread on DIY-PROM.

 

I was real surprised to see this,

http://www.chevytalk.org/fusionbb/sh...hp?tid/271165/

I also use RBob's EBL, can't say enough nice things about it.

http://www.dynamicefi.com/