How or why do these free mods work????

[flyinghighlm]

Evan though I am a n/t guy i am sure some of the turbo free mods will work for me as well. My question is can someone explain to why they work, specificaly steps 1, 2 (guess is it stops hot air from recycling through) , 3, 13 (if its even a factor for me) Are there any other free mods for the n/t's???

http://www.dsmtuners.com/tuning-guide/1gturbo/stage0power.php

 

[DSMcamaro]

<b> 1. </b> Is basically a way to clean up your engine bay and get rid of stuff you dont need.
more info here.
http://www.dsmtuners.com/forums/showthread.php?t=198327

<b> 2.</b> colder air = more power. But still debatable wether or not you really see any gains from it.

Why block it off?
The idea is that if you block this off the hot exhaust gas will not mix with cool fresh intake air and will keep the intake manifold and charge air cooler.
What HP do I get by doing this?
Possibly none at all, except for a little from the cooler intake air.
^^^^ taken from the Vfaq
http://www.vfaq.net/DSM/mods/10faq.html

<b>3.</b> you could probably just buy a differnt air filter or a CAI.

<b> 13.</b> No performance, dont know exactly how the n/t's go.

 

[flyinghighlm]

thanks for clearing this up for me. I have alread "hacked" my canister and put a k&n in guess I will give the others a shot as well

 

[DSMcamaro]

No problem. Removing your cat is a cheap mod that should give you a little more power aswell. But you didn't hear it from me.
edit: Nevermind, I just checked your profile and assume you already got rid of it.

 

[beatshack]

Before you go blocking off your EGR, just remember you'll lose your cold start. If you live in a place that gets to -20 C like me, you need it.

 

[MrBoxx]

Are you thinking of the FIAV? I think that has more to do with cold starts than the EGR.

 

[beatshack]

I was pretty sure the EGR system recycles hot exhaust gasses to warm the mixture for cold starts?

 

[BaddAssGst]

I was pretty sure the EGR system recycles hot exhaust gasses to warm the mixture for cold starts?

I've never heard that at all so I would assume it doesn't effect cold start-ups.

 

[thabeana]

EGR, as i'm sure you know, stands for exhaust gas recirculation. The EGR valve's main purpose is for emissions; it recirculates exhaust gases through again to burn off any un-burned fuel, thus creating a "cleaner" exhaust release. In my experience, the EGR does not aid the start-up process...but I may be wrong

 

[MrBoxx]

The Fast-Idle Air Valve (hereafter referred to as the FIAV) is a valve that has engine coolant passed through it. As I remember it, there is a wax pellet that keeps the throttle body open and idle higher than normal operating temperature idle; the idea being that the higher idle will warm the engine up faster. As the coolant warms up, it passes over the wax pellet and softens it, allowing idle to return to normal. This is why in cold weather idle can be north of 1300, but in warmer weather, idle never raises above 1000.

What does that have to do with a "free mod"? Some people believe that the coolant passing through the throttle body warms up the throttle plate and warms the intake air. To get rid of this, it is possible to do a coolant line bypass and cap off the nipples on the throttle body. There used to be a VFAQ on how to do this, but it has since disappeared. Here is something I found on the VFAQ that says how to block it off, but it's just a blurb, so don't take it as gospel.

# Block the FIAV permanently. I'm not sure if this will buy you anything. Those who experience colder weather may not be able to start their cars without a working FIAV.
# The FIAV shares air intakes and exhausts with the ISC. Blocking just the FIAV requires some creative metalworking (or maybe just some hi-temp RTV for a non-removable block off). Be especially careful when separating the upper and lower TB halves. Coolant flows in the chambers between the halves. A damaged seal here could allow coolant to enter your intake and seriously damage or destroy your engine.

If anyone else here has any info on this or needs to correct anything I said that was wrong, please feel free.

 

[Quasimondo]

1. Remove missions vacum lines. No performance gain, just removes clutter from engine bay, more than likely will cause your car to fail emissions inspections.

2. Block EGR. Minimal performance gain. Blocking EGR prevents exhaust gas from being recirculated back into the intake. Some have reported increased fuel consumption with this modification.

3. Hack MAS. Not necessary with n/t cars. Hacking the MAF was necessary with turbocharged cars hitting fuel cut at high boost levels. Removing the lower honeycomb on the MAS gives the ECU a lower Karmen reading so it doesn't trigger fuel cut at high boost levels.

13. Valve Cover Breather. Good if you've already cleaned out your intake, otherwise doing it on a 100K+ engine that has a grimy intake manifold will not help. Other alternatives to this would be to install a see-thru fuel filter inline to that hose and replace as necessary.

 

[MrBoxx]

^ Pretty much sums it up.