400FWHP TBI build attempt thread

[Fast355]

I agree with Fast355 on the using Big injectors to make 400 hp. My own personal best with a SBC 5.7 Liter TBI chassis dyno pull was 330 Rear Wheel HP using 454 TBI injectors part #5235231 at 15 PSI. I used Vortec heads, EFI roller camshaft (similar to a Comp Cams 268 grind), Vortec 4 barrel aftermarket intake with a TBI adapter plate, headers, 9.2:1 CR, 0.045" Quench, and the 16197427 PCM... I admit there was a slight trade off in the tune, the big injectors were on the rich side at idle at 15 psi... The 16197427 has near idle fuel and spark tables, very helpful for idle tuning! The 16197427 has off idle fuel and spark tables, very helpful for MAX performance tuning! ... The EBL system does not have separate near idle / off idle fuel and spark tables, I wish it did... dave w

I have never once used seperate VE table or Spark values at idle. I found them an annoyance. Even on my 0411 both idle tables and the main table have the same values.

[dave w]

I have never once used seperate VE table or Spark values at idle. I found them an annoyance. Even on my 0411 both idle tables and the main table have the same values.

I completely agree, separate VE and Spark tables are an annoyance. I was very annoyed with the hours and hours of time I spent writing an excel spreadsheet that would sort / filter / average the separate tables from the data log .csv file. I also find waiting on the spreadsheet to finish processing annoying. dave w