I wonder what the E.T. is for us that added the tuned PCM, Cat-back exhaust and CAI? Think we would be below 8 seconds?

 

I think that on mine I need a CALENDER to time 0-60

2 things I dont measure on my ride:

1. Fuel economy
2. Speed like 0-60

I think that if you buy a H3, these 2 things are not supposed to be the reason for your buying decision

 

I rode in a 3.5L H3 auto, non-adv, lux package, brushgaurd, step sides with a modded K&N intake, cold air ducting, ported throttle body, custom tuning for 93 octane, ported exhaust manifold cat, and custom free flowing exhaust. The 0 - 60 MPH time was about 8.5 seconds.

I'm guessing similar mods on a 3.7L would get you close to or just under 8 seconds 0-60 MPH.

 

hey CHP...you still have your h3? Done anything else to it?

 

Exactly! I couldn't agree more. Yet these two topics seem to eat up a lot of threads on Hummer forums. Just resign yourself to the facts:

A) Even a minivan can blow your doors off on a 0-60 run or on the highway. And that's with the whole soccer team onboard. If your ego bruises easily, better get a muscle car.
B) Your Hummer is going to suck gas, and lots of it. Budget for it or change your driving habits. Having a Hummer as a daily ride is not for everyone.

Having said that, I'm always open to tweaks and mods that will help performance and save gas.

 

My friend went to a chevy dealer and he asked the car salesman how many miles per gallon the H2 gets and the salesman started laughing. That's like going into a rollsroyce dealer ship and asking how many mpg does the phantom get

 

I measured mine with highly technical cross references and a mechanical push button stop watch. It's 60 foot time was slow, but it has good mid range and finished the 0-60 mph at medium slow.


Now if I can just find some Mini Vans to drag race on my way home my day will be complete.

 

I've made my own scientific observation that the speedometer and fuel gauge are inversely proportional. As my speedometer goes up quickly, my fuel gauge seems to decline at the same rate. Funny how that works.

 

ran mine at the drag strip just to see what it would do.
mine was the 4355

 

Well I put into my H3 a turbo and a borla catbackexhaust. The car timed 6.9 from the original 10.5 secs(timed by a friend normalchronometer). Its boosting 7lbs sometimes 8lbs. I could boost it more but I dont want to harm the engine.The only thing I dont like is that at 100 mph is electronically limited so it can hurt you if you are in a dragstrip. There is a page thatstates that the H3 turbo does 5.8. I will need to clock it in a dragstrip next time just for fun maybe it can reach lower 6's but we shall see.

Looking into taking the speed governor off, not to race around but to go to a dragstrip and not be limited before getting to the finishline.