My adv auto teacher was talkn about how if you block off the EGR youll gain alittle bit more power cus it sucks in exhaust gases from you headers to the intake. So i tried it and noticed alittle difference but the may just be me. What do you think

 

Sounds like you're desperate for extremely small changes. All the effort you put into modding your engine can be spent finding a 5.0 from the junkyard and swap it in.

I doubt you noticed a difference. It was probably in your head.

 

every bit helps, and if its some thing that easy why not do it

 

Hard to say if your motor was calibrated/tuned/designed to use the EGR to prevent detonation. You'll find out if you block it, and you'll be making less power if so. EGR doesn't cost much power, not enough to fool with imo.

 

I'm with Granny on this one - small/negligible gain. Probably more in one's mind than noticed by the calibrated butt.

Kevin

 

Alright, yeah just wanted to hear other pinions

 

We are full of opinion!!

 

haha yep and thats good, i like to bounce ideas around like most of my posts are just ideas that may or may not be useful to someone.. Like theres one guy that talkd about maken a custom ram air intak manifold. Which im very serious about doing

 

Yup, the idea behind EGR is to take metered amounts of exhaust gas back into the cylinders. The idea is that exhaust is basically oxygen depleted, so it is inert. By circulating an inert gas, the tendency to knock or ping can be reduced, in effect its like raising the octane rating of the fuel. EGR's primary function is emission reduction however, but its can allow the car to use more advance or higher compression without having to use a higher octane.

 

Can you translate that to dummy talk for me lol

 

Quick translation, the truck likely won't pass Cali emission testing with the EGR blocked off.

 

Of yeah it deffenitly wont pass lol, same with my intake. But my main consern was the thing about my motor knocking

 

Sure, fuel + air = fire. Less air and less fuel equals less fire. By recirculating a gas that has no oxygen in it, you slow the combustion down. Slower combustion means less pinging, the same effect that higher octane (slower burning fuel) has. So think of the EGR system as the vehicle's built in octane booster.

 

oooh ok got cha,, now what is a motor doing when it pings

 

Umm isn't the EGR used to reduce NOx? high cylinder temps create NOx, By adding exhaust gas into the intake it cools the cylinders thereby reducing NOx.