Sequential injection

[Dylan]

People have run Delco for trans only, nothing to hard just some wiring. Helps keep the dash happy to. Could go the LS1 set up but you'll lose sequential injection anyway.

[delcowizzid]

Getting your single plane ported and flow balanced by someone with a flowbench would help a lot seen major improvements by some of the 304 head gurus on Aussiev8 forum just from careful porting at the entry's in the plenum will make more power fixing the issue than bandaiding it buy trimming cylinder fueling

[jezza351]

Getting your single plane ported and flow balanced by someone with a flowbench would help a lot seen major improvements by some of the 304 head gurus on Aussiev8 forum just from careful porting at the entry's in the plenum will make more power fixing the issue than bandaiding it buy trimming cylinder fueling

That's true to a point for a carb setup , even with a carb you still see distribution issues on a single plane due to runner lengths not being even etc but not as bad , with efi it's more pronounced as you contend with air speed being slower on the longer runners and fuel robbing occurring . Basically when batch fired the cylinders that open first can rob from the cylinders that haven't opened yet .

[MAGP]

Emphasis by me

sorry didn't read it properly, VT V8 5L was MAF and Sequential, it has Cam Signal, So VT V8 Enhanced Code on a VT V6 or V8 PCM would work.

Could I get you to clarify how a V6 PCM would work on a V8 running sequential injection?

I've never done it but I assume the pcm is physically the same , just the tune file on the memcal would suit either 6 or 8.
Pretty much the same as a vr v6 and v8 sharing the same pcm just different calibrations in the tune . Could be wrong but , others will know more.

The v8 PCM is the 531, the V6 is the 396. The V8 has capacity to drive 8 injectors (1 pin on the ecu for each injector) the V6 has 6. I was thinking that maybe 2 unused pins may have been made to work but there would be a problem with drivers cause the 396 only has 6 that I know of.

The VR and earlier PCM/ECM had batch fire that is how they could work for both V6 and V8.

[jezza351]

Yeah I read delcowizzards response and he confirmed they were different , told ya I could be wrong

[The1]

v6 and v8 pcm boards are the same, have used VT v6 in v8 before no problems.

[HQ355]

Regardless the pcm is only sequential up until about 2500rpm arnt they ? They then revert to batch fire from my understanding ?

[jezza351]

Regardless the pcm is only sequential up until about 2500rpm arnt they ? They then revert to batch fire from my understanding ?

Not sure on that , generally there's not much difference between sequential and batch at high rpm as sequential basically has the injector open constantly and ends up acting like a batch fired setup , but for boost and lower rpm it can be a problem with batch and lean cylinders . I need to be able to control fuelling in the mid range when full boost comes on at around 3500rpm onwards

[MAGP]

v6 and v8 pcm boards are the same, have used VT v6 in v8 before no problems.

Thanks, learn something new everyday.

[Dylan]

v6 and v8 pcm boards are the same, have used VT v6 in v8 before no problems.

That's handy. I read on here the VX VY flash model only has 6 injector driver's is that right?