What do you think of this engine performance upgrade?

[tomp]

It's basically just a head upgrade, cam and come cleanup work with custom mapping. You'd be much better off springing for the supercharger for close to the same price.

[HUMMERcustoms.com/TAZ]

I agree with tomp you would be better off with Magnuson supercharger at 5 or 6 lbs. of boost which will not hurt a H2 at all. What they are offering is a really good air flow improvement but, you got to flow more air to really get the great benefit from the kit. It would help if You could go to ram air but, that is a completely new set of difficulties. What they offer is something I would do at some point after I added a supercharger to push more air and fuel to justify their kit. Play with a supercharger for a little while then go and have their kit done and run your boost from 5 or 6 lbs. up to about 15 plus lbs. of boost and see the screamer you will be strapped to. I suspect though You will for the money be happy with supercharger.

You can search and find suggestions I have made many times but, Dragon and I are running the stock 6.0L engine with supercharger at around 5 to 6 lbs. of boost along with some good tuning, good air intake, and header catback system with true dual exhaust, 160 degree T-Stat, electric fans from a 3/4 Gm truck and get around 550HP at the ground. This is with no internal mods and no tranny add-ons yet but, they are coming soon. Just aftermarket add-ons but, will improve a great deal more once i get my hands on it and do some real good tuning once Dragon is finished with the electronic upgrades. What he is doing is important to Our working to get as close to 1000HP to ground with no internal mods just stock except for add-ons. Will of course be adding water/methanol inj. and co2 spray to aftercooler as well as an old fashion ice bucket with fuel line running through it.

Lot's of tricks to get whatever a person is looking for but, requires dedicated study from leaders in performance industry or at least having good people in town that do not mind sharing info. If need be to get to the 1000HP We will most likely go with a ported LS6 set of heads, LS6 cam and some more compression pistons that have been introduced by Performance Products who made the Diablo programmer as well as many other niche type items.

Well You know the old saying anyone can go as fast as they want but, they just have to spend the money or know how to do it yourself.

Follow tomps advice i would say.

TAZ

[Boar-Ral]

What I found amusing was, "This performance package will increase power significantly, while still maintaining the OEM drivability and fuel mileage that you expect and still leave room for future performance enhancements at a later date."

What fuel mileage?

[HUMMERcustoms.com/TAZ]

Boar-Ral
I love Your comment it is on the money. Not just what is the factory performance. Anytime You make a change to an engine that let's it breath better and which in turns requires more fuel or you run to lean and burn pistons's you will lose fuel economy. Guys if You are looking for more power and better MPG that is the Holy Grail. I have not been able to run the numbers on Our rig to even see that it is able to be done yet but, I will try.

Do not get me wrong the manufacture has ways to get power and MPG it is not to their benefit quite yet to spend the extra money but, if You do it the aftermarket way it is not likely You will gain MPG just due to the basics on how an engine functions. Small = MPG Big = bad MPG.
Make engine able to flow more air means more fuel, only way it can work or it is to lean and blows up and it hurts small engine MPG also.

It is why i have to look at running 120 octane, change to colder spark plugs, adding water/methanol inj. and cool down the supecharger aftercooler is because i'm forcing more air and more air needs more fuel and you have to mess with timing as well as all the other stuff so the engine does not detonate. I'm guessing but, when i get to that point for speed runs may run pure methanol by then also but, MPG will be -20 who knows. But, if You work with people who know what they are doing they can do as i'm doing and use tuning software that costs more but, i can store tunes for pump gas with supercharger to the most extreme and all i have to do is add water/methanol inj. or co2 spray on aftercooler and anywhere in between. I'm going to even see just how much i can down tune the H2 with software for travel on HWY. as supercharger has bypass valve so that if no boost is required it takes only about 1/3 of a HP to turn supercharger. Do not get on it runs like factory sort of maybe better. I'm going to play with it. But. as Roar-Ral I'm sure is thinking hey with the H2 You are starting in a hole to begin with. Do not get sucked into thinking there is a magic cure for poor MPG on large engine in a 8000lb. rig unless they add diesel or go to the 4-6-8 engine cutout on the H2. Those of Us with what we have now live with the 10 to 12 MPG unless someone comes up with a miracle.

Me i just want to see what the H2 can do when pushed hard if all the sponsors fall in line as they say they are. If not I will still most likely do it if I can get it together in time. Dragon and I have a few sponsors We are tied to this summer so will steal time from Us, then it will be free to just show for Motorsportsauthority/HUMMERcustoms and blow it up if we want.

Go to HPTUNERS.com and read what the tuning software did with just tuning on a stock car he has. When You see the pic I think the right front wheel is off the ground and he is running in the 10's. He did it to prove what good tuning can do for a stock vehicle and they have kits for laptops to go with any level you want to go to. With mine I'm having to add tuning with a full time wideband logger and 3 bar density that let's us run up to 30lbs. of boost so you fool the PCM into thinking it is getting the air and stuff the MAF would be telling it is but the MAF will not read the amount of air flow we pull through. It takes a little time to learn it but there is a great forum that the owners actually help monitor and answer questions. MSD liked the tuning enough that they made a deal to help them with Ford and Dodge tuning which MSD has patent on and asked them to put the new tune that will be or may be already in the Superchips programer because MSD bought superchips or owned them, they are a seperate division. HPTUNERS provides tuning for them. There has been questions as to what tuner anyone would buy. I know which hand held I would buy knowing about the laptop serious tuning i have been using and getting up dates almost faster than i can download them. HPTUNERS stays on top of business.

TAZ

[KenP]

TAZ!!!

[Boar-Ral]

Originally Posted by HUMMERcustoms.com/TAZ

It is why i have to look at running 120 octane, change to colder spark plugs, adding water/methanol inj. and cool down the supecharger aftercooler is because i'm forcing more air and more air needs more fuel and you have to mess with timing as well as all the other stuff so the engine does not detonate.

That is crazy! I didn't even realize that they made 120 octane fuel! That sounds like something you'd put in a supercar. You have a dream setup.

[Humdingah]

Ummm...I thought anything over 110 octane was leaded? I'd love to find come 120 octane unleaded fuel...I could safely run 25 lbs. of boost on the turbo 'Busa and the Lightning.

[HUMMERcustoms.com/TAZ]

Really just straight methanol race fuel. You can get custom formulated fuel if you want to pay. I really plan on not running that high of octane I hope just inj. straight methanol or water/methanol mix which ever works better in high daytime temps. The purpose is to cool everything down as much as possible so you do not detonate. 87 octane has more power in it than 100 something octane does. 87 is more volatile than 93 or higher. If all was perfect You would want to run 87 and try to tame it with right inj. mix, timing and just allot of other variables then as much boost as you can. It will just depend on when we start cranking it up a notch at a time during the year playing with the tune and asking Allen for help if we are able to get it ready to go. Plus getting Allen to make small enough pulley to get to boost I want.

If we can make it to the run Allen offered to go along which I will most gladly accept if it is possible. Just hoping to get it to 18 or 20 lbs. of boost for runs. What we set up at home will be base to have to take to run and build on due to temps., altitude, humidity and what ever other variables when you get there. It is a 2 or 3 day deal so you get tuning time and test runs. Same as pro drag racers they tune at ever track starting with a base model that maybe even stored from year before on that track and adjust it. So they show up as much as possible before the races to change tunes.
That is why i hope Allen will get to go and help me since he is use to tuning in the Texas heat. We will even have an old fashion ice bucket with coiled fuel line inside to add dry ice or what ever we feel we may need to cool fuel down even more. Water/meth inj. is choice to help cool air down so you hope you figure it out. Huge balancing act and could blow it up the first test day but, do not plan to push it that hard first year there so i can learn.

Since there is no class for an SUV unless they decide to do it we will run in open class which we have no chance of running 261 mph in a 1 mile trap I think a Toyota Celica set it in 05 maybe a Nissan. Yet as i was told by organizers i would be setting a speed that may draw others to come and try and beat our SUV which could lead to a class. We have a couple of magazines interested in meeting us there so who knows may start a new class the next year. It is still bragging rights to be the fastest 8000lb. SUV speed and time holder at The Texas Mile sanctioned by the same body that does Bonneville salt flat runs and there is another in North Carolina I think. Gives somebody else that wants to bring a full stock interior etc. vehicle with same weight, something to take a shot at and if i get to bring it back the next year hope somebody shows up to compete against. Really to costly of amount of fun but, what else would you want to do leave to the kids?

We are aloud to have pit crews and they do not allow pit passes so maybe some will get to come and help out or hang out as pit crew. I hope it all works out I have been thinking about this and planning it for a year now to do it this fall since we cannot make the early spring runs. Phone calls that kind of stuff trying to figure from them what they want to do with us.

The rest of the time it will be tuned with 10 lbs. and inj. mix and co2 spray set for WOT only just incase some fun shows up.

Dragon every so often has a car club or sometime just local gearheads do some driving on the strip and then go park in a big lot and let people stop and look as most of the rigs are ones that MSA is sponsoring so they show up to support the shop. So we have Dragon's Celica Gt & the H2 there. Then we have sponsors to take H2 to show for so it has to be many things.

Oh if anyone is interested in buying the hotest Celica GT You have ever seen with turbo the works Dragon is thinking of selling it and building something new. This car has so many trophies and just so much WOW it is a 3 head jerk when you walk by it at shows. We have seen people do it. You know the retake looks. I suggest if You would like a tuner in the family also, check this car out as it has been sponsored heavily. I think has been used in web shots and mags more stuff on it than i have ever seen and is classy hi tech no cheese look here. PM Dragon for pics. He completely redid the ride in 06 paint i think. It has no rear seat as it has huge 14" subs built in with more in rear trunk with all the amps, caps and carbon fiber hand laid everywhere. Wish I had more money I want it. Lambo doors and turbo I think I said already. Blue

Hope to add some spice to life and anyone else interested in seeing what an H2 can do! We know they are great off roaders, just a new type of challenge for H2. Thanks to all of those who PM me with support as well as those who do in forum also. I know I'm running on the other edge of what H2 was built for but, it just seems to draw me to see what it could do.

I forgot Dragon had a BUSA he sponsored that ran something over 220hp at the rear wheels and when I stopped keeping up he was just getting started maybe adding nitrous etc. so i do not know where he went with it.

TAZ

[evomind2]

Originally Posted by Boar-Ral

That is crazy! I didn't even realize that they made 120 octane fuel! That sounds like something you'd put in a supercar. You have a dream setup.

call it c-16.

[Humdingah]

Originally Posted by evomind2

call it c-16.

Leaded (6%)...lots of 'Busa guys run it. Unless you're gutting or getting rid of cats and are going to use O2 eliminators you've got some issues. It'll ruin the cats and o2 sensors if used on a consistent basis.