Hat injection on BDS 6-71 355 SBC

[C4396bbc]

Hello all,

I am looking for some help configuring this setup. Any help would be greatly appreciated.

Megasquirt-2 ECU w/PCBv3.57
Firmware MS2-Extra 3.1.1
355 SBC
671 BDS blower with 7lbs boost
8.5 to 1 comp.
Roller cam grind Duration 236 intake 244 exhaust
Lift 533 intake 540 exhaust
1.5 rockers
Dart heads 215 runners 64cc chambers
Mallory Unilite distributor
innovate LC-2 o2 sensor
60-lb injectors
42-lbs of fuel pressure

Thank you!

[Matt Cramer]

First step is to get the ignition set up. Is the distributor controlling spark, or do you have its advance locked out and the MS controlling timing?

[C4396bbc]

Hello Matt,

I am running the MS as fuel only.

Thanks.

[Matt Cramer]

Then set spark mode to Fuel Only, and the main things left will be scaling Required Fuel for your displacement and engine size, and tuning the VE table and AE.

[C4396bbc]

Thanks Matt for your input.

I'm curious if there is anyone running this type of setup that could help me out. I'm not sure on how to configure the injectors for this fuel delivery setup. I can get the engine to start but struggling to keep it running. I forgot to mention this is my first go at tuning an EFI car. I have been reading the manual like mad but need a little good old fashion advice from someone that's done it. I have been twisting wrenches over 20 years and currently work on CNC machines but this is a new animal.
Thank you.

I will try to upload a MSQ and datalog asap.

[sjtsds]

I am very familiar with how the ms works with a supercharger application. Load an msq. so we can see where your at. I would be happy to assist.

[sjtsds]

Is the fuel split or are all injectors above the supercharger? What are you running for wideband AFR? What is the placement of the widebands?