[Diy_efi] 7727 With Mild 6 - 8 PSI Blower...???

[Doug Dayson]

Thanks Steve, appreciate the help...

Doug

"Marteney, Steve" wrote:

> There was a lot of discussion several months to a year ago about a topic
> similar to this.  Topics discussed were using a 730 for boost (there has
> been mention of someone completing a 730 2Bar map sensor code change) and
> adapting a 747 to a V8 app.  Search in this year's and last year's archives
> and you are bound to find these threads.
>
> Steve
>
> -----Original Message-----
> From: Doug Dayson [mailto:djdayson at attbi.com]
> Sent: Wednesday, November 20, 2002 8:07 PM
> To: gmecm at diy-efi.org; Post DIY_EFI
> Subject: [Diy_efi] 7727 With Mild 6 - 8 PSI Blower...???
>
> Hi all...
>
> I've been talking with some who are successfully running mild 6 - 8 PSI
> Intercooled Blowers on mostly stock LT1's with 1 BAR MAP's. I'm hoping to
> try the same with the 727/L98  combo in my 91 Z07 Vette. Since this is
> with a stock cast bottom end, I realize that perfect charge temps, spark,
> and fuel are required for reliability!
>
> They're tuning the "PE" and "Percent of TPS to enable PE" values, and the
> "WOT Fuel and Spark" for Boost conditions.
> Also, the "Injector Constant and Offset" for bigger injectors and
> upgraded fuel pump too.
>
> I've learned that meaningful boost only happens at roughly 80% TPS and
> up, so then the above seems like a good way to eliminate the FMU?
>
> I was wondering if anyone here has any experience with this concept, and
> hoping they could give me a more detailed explanation/advice, or point me
> at the relevant archives...
>
> Thanks...
>
> Doug
>
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