I've read several threads on this and just need some clarity. I have a 2000 silverado 5.3 with the single belt, 2 aux. injectors-whipple. I have replaced the fuel pump and injectors and put a 10psi pulley on. My problem is with the electronics they are not letting me keep my boost. How can I get around the electronics or do away with them? I have read about disconnecting vacume lines and rewiring a selonid, but need clarity for my set-up. Any Info. would be greatly appreciated!!! THANKS

 

You upgrade to Bigger injectors 42/44lb and remove the electronics also the IAT resistor ... and get a retune.. then you route the vacume lines without all the electronics hooked up

 

What IAT resistor? Is his 2000 5.3 kit different from my 2000 6.0 kit?

 

I didnt install my kit.. but when i removed everything I saw that I still had -40 IATs I tried another MAF... same problem... I found that there was a resistor placed in the wire on the harness for the maf ...

 

I wish mine had that resistor, I wouldn't have needed an intercooler! It sounds to me like some tuner's method of eliminating high-IAT spark retard. I guess that would work, if you ran race gas.
Anyway, Blown 5.3, if you have installed bigger injectors, you must already have retuned, so the only things required to eliminate the Whippletronic's interference is to unplug the Whipple computer from its main power relay, and reroute the bypass solenoid's vacuum lines as shown in this
picture, supplied by I can't remember who on this website.

 

Thanks for all the info. guys. So just disconnect the vacume line and let the nipple vent and disconnect the piggyback and I'm done. Theres no solenoid to rewire? correct?

 

thats all you need to disconnect.. Dont forget to Add bigger injectors and a Re-tune first !!... Also give us an update on your Track times !!...