did my 6.0 IC swap went super easy, my only concern is that all my 7.3 IC boots fit the 6.0 just fine. I measured both and the 6.0 was definitley bigger its just that all the boots fit, is that a trip or what? Also did the WW and that was a PITA the one bolt blocked by the valve cover. Also did the ccv mod that was soooo easy, I just flipped the outlet to the back and ran the 3/4 hose out to the back (anyone have the link to the guy who did that housing for the hose to go into so it didnt stink or leak ) also fixed my 6637 with the 3in coupling to replace the the ccv hole, also removed my muffler and lost alot of low end so I think I will put it back on, anyone else lose loads of power?......my wife hates me but hey at least my truck loves me

 

You should not have lost anything. Are you sure the boots fit? Maybe just close? It should not have fit... That worries me.

 

the boots the the Ic fits perfectly both Ic diameters were the same, I didnt have to force them ???? lost alot of power without the muffler??????

 

I dont see how removing a muffler can hurt your low end... Anything that allows Exhaust out should help it...

I have never seen a truck where the boots fit... That is weird...

 

maybe too much backpressure loss? I dont know I do know that I lost it.

 

Yeah, that low end loss, while noticeable is easily made up with a quicker spool. Those stock boots will likely fit if stretched. Make sure they are not leaking. You don't need backpressure in these trucks. The turbo will provide that. The little low end you lost, and I say little, is easily made up in better breathing and quicker turbo spool-up. I ran mine around with a downpipe for a week and a half awaiting my Cannon. Ran great.

CSIPSD has a good point, are you sure the new IC is sound? Are you building good boost? Make sure you don't have a boost leak.

What is up with the 3" pipe in the intake?

As for the vapor cannister, I can look, but I just route mine way out back and don't really smell it. Long heater hose ya know.

 

hmmm the IC is sound, my boost numbers are good, I have a 1.0 housing coming from lidp. THe 3in pvc I used to make up the gap that was there after removing the piece that ha the ccv hose to it

 

Should have been a 4" piece... I used a piece of 4" exhaust tubeing for mine and the wifes X...

 

ok I must be in some kind of limbo cuz all the wrong sizes are working perfectly for me???????????????????????????

 

Well, I'm confused. I pulled that POS plastic CCV return coupling out and replaced it with a piece of 4" steel pipe. You will have lost some small low end with the muffler delete but I can definately say that my truck wound up a lot quicker when I removed everything from the muffler back. You have a potential boost leak. That is why I always recommend one mod at a time. Test and move on. Multiple mods mean multiple potential problems. I still say boost leak. Do you have gauges?

Edit: OK I see you have gauges. What kind of diff are you seeing if any. I bet there is some diff.

 

yup wht would you say I should be at, when cruisin at 65 im right at 5-7lbs and didnt see any changes unless i had a leak b4? but now all boots are definatley tight since mods

 

Skip that, that does sound normal, what do you max out at when getting on it? You know what I am talking about, when you're really getting on it, or in other words max boost you can make???

Edit: BTW, you should have noticed a reduction in EGTs. Is that the case?

 

i did notice a very little drop in egt's, I'll know more this weekend after tking the TH out to the desert, when I get on it i was making about 22-24 lbs, what do ou think?

 

Those are good boost #s, but I can get higher. I can get upwards to 30 w/out any foolers. Must be the tune because I get no SES error codes, ever. Haven't had one. My ref is the AIH delete plug.

I would suspect a better drop in EGTs without a muffller. Where is the pyro? Is the EBPV activating?

 

Losing low end power is actually a side effect of less exhaust restriction on these trucks. My truck was way quicker out of the hole before I did the 4" turbo back exhaust. It slowed a bit more with the wicked wheel. I did the mods for longevity and especially for the gain in mid and upper range power.
The turbo spools faster with a smaller exhaust because the exhaust air velocity is greater.
There is more volume with less restriction, so it is much more efficient through the entire rpm range with a larger exhaust and the powerband is much wider. It will be way more noticeable while towing, but the "seat of the pants meter" will feel a loss. My truck pulls 5000-6000lbs. like it does when empty, and that's why I did the mods. The lower egt difference will become much more noticeable while towing also.

If the truck is mainly just every day driver with no towing, the best set up to keep the seat of the pants feel, increase longevity and efficiency is a
3 1/2" to 4" downpipe and 4" the rest of the back exhaust with the original turbo compressor wheel. I tow daily 4500-9600lbs and keep my trucks for a long time. That is why I did the aFe intake, 4" turbo back exhaust, WW, tuner, TC lockup, & CCV mod.

This is just my opinion and personal experience, so take it for just that.
Your truck will benefit greatly and there are "hidden rewards" even if you feel a little disappointed in the outcome of some of your modifications.

Austin