Chevyguy327

Just installed a procharger on my basically stock 02 Silverado 6.0 the AFR wideband is only reading 13 9 under Full Throttle what do I do

FFDP

iTrader: (2)

Well did you tune it?

Or did you at least upgrade injectors and fuel pump to support boost?

Can't really just slap a procharger on something and expect to run fine.

Chevyguy327

Yes I put a fuel management system with additional fuel pump new to the game ProCharger said I don't need a tune or a programmer they sent me everything or not

FFDP

iTrader: (2)

That's silly to say you can just plumb in a extra fuel supply and call it good. No idea why procharger would sell something like that.

The engine/computer doesn't even know supercharged.

Chevyguy327

I said the same thing ProCharger claims the fuel management system works off of vacuum boosting the fuel pressure 1 lb for every pound of boost being that my truck is in 02 they say the computer wasn't sophisticated enough for a program maybe I was lied to the truck runs great but seems to be under lean conditions with no Knox

FFDP

iTrader: (2)

The P01 computers of that time are some of the most tune-able computers out there right now.

Nearly 90% of them support special upgrade-able 2 or 3 BAR operating systems with boost enrichment control when using tuning softwares like HP Tuners or EFI Live.



One thing to note, if the wideband is behind the cats you will likely get incorrect readings on the wideband and hearing knock and seeing knock on a scan tool are pretty different. You may not hear anything but the engine is retarding lots of timing because of knock that is see. A scan tool would show it.

Chevyguy327

I need a tuner in Orange County California then or do I buy some kind of programmer on the internet

Chevyguy327

Thanks for the help all the info is greatly appreciated

BDFabrizio

Before you get into boost again I'd get a tune from a reputable tuner. There are plenty of shops in your area that can handle this. If you're truly seeing 13.9 under WOT you're literally on borrowed time before you melt a piston.

Chevyguy327

Point taken booked an appointment thanks for the help guys