Upgrades?????

[Field Scout]

Originally Posted by shlprk

Hey guys,
I'm in the process of doing alot of research on the hummer3 for a future buy.
My question is for you experts.
1.Exhaust- yes or no and who makes the best?
2.Air intakes- yes or no who makes the best?
3.ECM-yes or no and i think raptorq is the only one.

So guys before you reply let me tell you what i'm thinking.
I dont want a 8 cyl too much gas. looking for a toad for my rv, and this will be used as my daily driver. I still want something with reasonable power. This is why Im looking for upgrades.
I have my eye on an 06, thinking about putting 35's on it. I know this set up will require a lift, what do you recomend?
1. Rancho 4" lift (smooth ride)?
2. Cranking up keys (very stiff ride)?

So if you can help with any comments I would appreciate it. Thanks in advance

Someone will say it so I guess I'll be first "search" is your friend.
However; I'll do my best to help,
1-exhuast, dont know myself but understand Borla is a good set up(not too noisy)
2-intake, not if you offroad, also basicly a waste anyway no real improvement
3- ecm, did mine w/pcmforless, maybe 1/2mpg better only real difference I noticed was the change in shift firmness the added
As for 35's no lift needed alot on the forum turned thier t-bars(did mine 5 turns to compensate for the extra weight from my winch)ride is about the same as long as you dont go crazy
also according to the discount tire web page calculating speed chande w/tire size changes 33 to 35 is approx 3mph different so your mpg may look worse but my 33's are 3mph slow according to my cop buddies radar.also no way to ajust speedo at this time
keep things off your roof ie. roof racks and your mpg will be ok with my rack on I get 15 to 15.5mpg, off I get about 17mpg
good luck and if you buy get the adv pkg good extras for not that much more

[shlprk]

Field scout Thank you for the 411, Ive done the search and I'd thought if i ask they will deliver. if i ask all that i need in one post it will save me and those from all that typing.
So I can run 35's stock,? I want a level look, but I dont want a stiff ride. I have a 2500hd and I did the 3" key lift and it was really stiff. will this be the same ride as u have on your rig?
I really dont intend on putting anyting on the roof so i'm ok with that. but if your saying you get about 17mpg then i'l be ahead.
Do you happen to have a web site for pcmforless?

Thanks again for your help

[Field Scout]

When I say 35's actually its 315/75/16=34.5? inches not true 35x?x16 you will get some rubbing at full lock but back off the steering wheel about an inch and youll be fine
on leveling the H3 I turned my torsion bars 5 turns to get it close to level, less stink bug look but not full level have heard people that went full level got a bouncy ride, finally I think its pcmforless.com if you go through them the way to go is let them send you a loaner, when you get it send them yours to reprogram and send back. this will save you from having to do a CASE relearn
Good luck

[HBH3]

I have 35's (yes 315's) on stock weheels. They only rub a tad against the sways bar on full lock on right turn, not left. That is easily fixable by welsding a small piece of metal on the turn stop.

I also have done the PCM for less and it made a noticeable difference; and I have a 5 spd not auto. They also do correct the speedo for larger tires so the mileage and speed are accurate.

As far as leveling, I did the Readylift leveling kit. The ride is the same, and it looks perfectly level.

Enjoy!

[shlprk]

Hey guys Thanks again, So you guys are not running any aftermarket intakes? I was just on the web sites and they all say that there products will increase hp and gas milage. this was off the dyno. anyone try doing intake and exhaust and ecm? just wondering.
Thanks for the suggestions I will look at readylift and check them out.
One question for you guys, to go with aftermarket wheels what offset is suggested, I say one demension cant find it again. And if i did a different offset will this increase or decrease the rubbing.?
Thanks again.

[RubHer Yellow Ducky]

The Spacer is really questionable on any vehicle.

Cold Air Intake ... Trace out your H-3, it already comes from the factory with cold air intake (send me your money instead)

Exhaust --- there you can gain a few extra horses...

[raptorman53]

For the money I think the re-program is the best. I have both the itake and exhaust. Between the two there is a slight inprove in both power and fuel mileage. I do like how the exhaust sounds though, so not a complete disappointment.

[Sewie]

Originally Posted by shlprk

One question for you guys, to go with aftermarket wheels what offset is suggested

Depends on the width of the wheel. Stock wheels are 7.5" wide and have 5" backspace. For a 8" wide wheel, you'll probaly want 4.5" backspace. The wider you go, the more backspacing you want.

[shlprk]

Thanks again guys, these ques may seem a little premature for me but like I said I'm trying to get all my research before I purchase this h3. Ive got my credit union selling my truck this weekend so hopefully things will work out.
So I guess the ecu/pcm4less and an exhaust r the way 2 go. Thanks 4 the 411 guys. I think I would like more hp's from the exhaust rather than the noise, so what do you recommend, i've been to volant, corsa, magnaflow, and borla. Which is the better in your opinions.??
Thanks in advance I think this forum is great, despite the posers that will invaid and try 2 put there 2 cents. keep it up guys