Well I think we are all or at least I am royally confused. Everyone has different boost numbers, and that part I can understand, but nobody seems to have an answer to the question. I think you guys with so much boost should make sure you dont have a chip or anything that might throw the statistics off. If we are going to figuer this out we need to be sure of what we are dealing with. Atleast that would seem the best way to me. You need to control the variables.

 

idk. guys.. it kinda has me puzzle but joes intercooler could be the prob...

 

I wouldn't imagine his would be any different than anybody else that has one I was just wondering if theaddition of the intercooler could do that.

 

For those of us that still dont understand the forum lingo(me) What is idk?

 

I don't know. = IDK
If I remember correctly = IIRC

 

Check this link out he has more.

http://pages.prodigy.net/stevebaz/_i...az/index3.html

 

yea i want a intercooler but if i am going to lose boost doint it is it really worth it???

 

Well usually you put an intercooler on to reduce EGT's especially when pulling not for HP or more boost. To answer your question I would say Yes it is worth it to put it on. I have heard some say they have more lag but that can be fixed by relocating you map sensor.

 

I have read that you loose between 2-4 psi with the intercooler. My truck also make 0 boost in neutral or park.

 

but here is the question... is it really worth the power you would loose just to keep egts kooler...

 

ok, let me start form the begining.
when i bought my truck the only mods were the 3 inch dp and 4 inch exhaust with a magnaflow straight through muffler and a rigged up 6637 that was a mess. all else was bone stock. the map line factory is 1\4 inch i beleive.

i ran the truck with both the ford ngs and the wds scan tools and could achieve a max of 12-13 psi.

i added the intercooler and my max boost dropped to 10-11psi.

after that i added the superchip (80 horse) and a redesigned intake (still a 6637)
boost went up to maybee 14ish?

i added the c00nhunterjoe's icp mod and a ccv mod and moved the map line to the opposite side of the intake. also shimmed the fpr from 42 psi to 80 psi. my peak boost went up to roughly 17 psi.

i removed the muffler next with no effect, double checked all boost lines and connections, checked all up-pipe and turbo connections. have performed several crankcase pressure tests and cylinder contribution tests all passing with flying colors.

i have found that if i let the truck shift on its own the 2-3 shift is early at around 3000 rpm, if i hold it manualy to 3400 the boost will increase to 20 psi just as it hits the limiter then drop off if i dont shift at the perfect time. if i hold the truck in 1st gear i cant build more then 15, 2nd will hit 20 and 3rd will hit 20 manually. every shift drops boost to roughly 9-10 psi

if the truck shifts itself the 1-2 is perfect timing, 2-3 is a little early, and 3-4 is perfect.

my boost climbs to a peak of 15-17 and drops to 9-10 at shifts. the powerband is good and consistant. if i push it to hit 20 psi you can feel the truck back off a little bit

(i know i have been doing this way too much)

 

adding the intercooler made 0 change on my power driving unloaded. when weighted down pulling a big hill i really could feel an improvement in how it pulled
the boost loss is irrelevent. you cant think of it as a loss of power. its a loss of pressure. you have the same volume of air going through the motor. pressure is not as important as the volume of air you are moving into the cylinders. the pressure comes in when you are moving so much air through a small tube. (2 inch intakes on ours) when you add the 3inch turbo tubes the turbo doesnt put the same amount of pressure on the intake thus the loss in physical pressure but you are still putting the same amount of air in the motor. while it is still the same amount of air it is however denser since the intercooler is lowering the temperature. denser air= more efficient burn resulting in more power.

in a basicly stock truck (ie stock injectors and turbo) you wont see much of a physical horsepower gain. but if you get a custom chip, big injectors and lots of fuel and a bigger turbo you can see a 100-150 hp gain on the same motor just by adding the intercooler.

 

i may just have to rig me up a intercooler... just to see what all she does... plus i plan on having injectors and a chip and i still plan on using the truck to pull alot of heavy loads...

 

ok all this talk about boost in park had me curious so I matted my truck in park and climbed to 5 psi with a quick jab of the throttle. But why does it matter! Its not soing anything other than wasting fuel. lets talk boost number running down the road!

As for an intercooler. There was no percievable increase in power but I was able to stay in the throttle longer and harder before having to back out due to EGT's. its a supporting mod. Some have claimed 25-30hp on the dyno but I couldn't feel it. Maybe If i went back to stock y-pipe I could but I am not going to.

PS- peak boost before IC was 33. after its still 33psi but it shoots to 28 then climbs slowly to 33 now. Its saving my turbo from another fast death!

 

for those of you getting stage 1's soon you can expect your boost gauge to act a little like this


boost

or this
boost 2