17mwolfe wrote: ↑Sat Nov 30, 2019 11:36 pm
This is some really good information!
I plan on using this to assist me on putting the supercharger on my 2011 caprice
I have a few questions.
Is the connector for the zl1 injectors the same as the stock electrical connector?
is the stock fuel pump able to supply enough fuel?
does the supercharger by-pass work just fine without the electrical valve?
Do you not need a adaptor plate on the intake ports? or doesthe supercharger bolts right up to the heads?
Your work seems really top notch. I would really appreciate some more information
Thanks for the kind words. I'll try to answer your questions as concisely as possible.
Is the connector for the zl1 injectors the same as the stock electrical connector?
Yes. They are the same USCAR connector. The LSA injectors are standard height for this series of engines and install seamlessly.
Is the stock fuel pump able to supply enough fuel?
Yes..However.... The fuel pump is the same one as the ZL1 but the Fuel Pump Controller Module (FPCM) has a more conservative calibration. With the LSA injectors they will be running at a fairly high duty cycle with the stock PPV FPCM calibration. Since you need to tune the car anyways, one more HPTuners credit will gain you access to the FPCM calibration. It is a couple of changes to make the fuel pump increase it's fuel pressure with increasing fuel flow.
Does the supercharger by-pass work just fine without the electrical valve?
You should remove the electrical bypass control valve. The E38 ECM does not have the ability to use it. It's primary use is to control boost for certain scenarios like engine fault, or when in reverse.
Do you not need a adaptor plate on the intake ports? or doesthe supercharger bolts right up to the heads?
The LSA engine uses the same rectangular intake ports and as you saw from my writeup, it sits right on top without adapter plates.