Does anyone run a 4#er on the stock program? I have been told it's ok to run a 4# pulley with NO chip....any input? thanks Jeff

 

I met a gut out at the local track here in Fl and he had a upper pulley installed.He was running with out a chip.Dont remember
which one but he said that he was told that the trucks stock computer would make the changes it needed on its own.I never heard of that but to each his own.I wouldnt do it.Hopfully a tuner reads this iI would like to know my self..

 

Any pulley should have a chip, I have heard that up to 2lb extra of boost is ok, but will not get the best results without a chip!!

 

I'm just worried about destroying an engine

 

4lb = a chip & good plugs for sure!!! SAVE YOUR MOTOR!!! LOL

 

You guys would not believe who told me that the 4# would be ok without a chip....

 

Jeffs,

I hate to ask who, I dont want to start anything... But since you were told you can post it if you want. I know that the pulleys I have seen some with a note saying a PROPER PROGRAMED CHIP is need for use with this pulley....

 

If it makes you guys feel better I just got off the phone with Diablo sport and his answer after he stopped laughing was good luck with out a programed chip

 

Why would you want to run a pulley and not add a chip?

 

Sometimes you have to pull the chip and send it in for a reburn. That is why one would run a pulley with no chip.....especially since they were told it was ok....

 

Jeff, you could probably get away with a 4 pound on a 99-00 since stock they run super rich. But on an 01, the stock calibration is way leaner. I would not suggest running a 4 pound pulley with no chip on an 01.