I just went from the factory 3.7 to the 3.1 pulley and all I can say is "WOW"! This mod woke the 1900 up to where it should be. With the factory stall I can lay tons of rubber with my 5.3 with my posi at 3500' elevation on a hot day. It pulls hard and keeps on pulling. I recommend this upgrade if the warranty is not too important to you. Sorry, no video camera right now.

 

Hope you calibrated the PCM for the added boost.

 

Yep, had it all tuned today, egr and rear O2's deleted as well. Here's a problem now. I was told it was safe to remove the MAF so I gutted it. Starts hard and won't run at times. I guess I'm going to buy a MAF tomorrow. I should have left well enough alone.

 

Why didnt you just take it out instead of destroying it?

 

Lol, that's what I was thinking. My eyes got big when I read that.... I've heard of descreening but not completely gutting it. Oh well, glad it runs awesome. Can't wait to get around to installing mine.

 

Ask your tuner if you can just add a remote AIT sensor to replace the one you trashed in the MAF.

Rick

 

It was pretty drastic but I couldn't find a way to step up the tube size. Anyways, problem solved. Found a cheapy at the wreckers and she's running great again. Leaving on holidays, pulling 7000lb RV trailer, will report on how it goes.

 

I hope that 60E is really well built!