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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > Technical Discussion and Customizing your H2

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  #1  
Old 03-11-2004, 05:22 PM
H2_SUT_SC H2_SUT_SC is offline
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Who here has a SC on their H2 and what were your dyno #'s.

It sounds like Whipple may have the most experience with them so far.

I plan on throwing one on my SUT as soon as I get it and would like to know what option would be the best.

Also has anyone used Xtreme Motorsports? I see they have a custom muffler and other parts. I e-mailed them w/ no response.
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  #2  
Old 03-11-2004, 05:22 PM
H2_SUT_SC H2_SUT_SC is offline
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Who here has a SC on their H2 and what were your dyno #'s.

It sounds like Whipple may have the most experience with them so far.

I plan on throwing one on my SUT as soon as I get it and would like to know what option would be the best.

Also has anyone used Xtreme Motorsports? I see they have a custom muffler and other parts. I e-mailed them w/ no response.
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  #3  
Old 03-11-2004, 11:58 PM
HGW HGW is offline
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True on the tranny. I spoke to the guys at LPE---I would suggest at least a new torqe converter. I like the Wang, so does LPE.
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  #4  
Old 03-11-2004, 07:44 PM
H2_SUT_SC H2_SUT_SC is offline
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Well...I got my answer. Called my local H2 dealer and they now install SC's. They said they were doing Whipples but were having too many problems and have since switched to Magnusson so that's the way I'm going.
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  #5  
Old 03-12-2004, 08:49 PM
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This dealer had not done one. This was right after the install. I hope they reprogrammed it for them.
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Old 03-11-2004, 10:40 PM
HGW HGW is offline
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Good choice. The MC runs on 5-6 pounds of boost and is a good chouce for every day driving--the others produce the Horse Power but are really hard to keep tuned. Please let me know ho much your dealer is charging---I am doing mine myself---in my shop now.

PS---If you get the polished one--about $700 more, the blower is polished but the manifold is not. Mag produced the first 1000 with polished manifolds, so there are a lot of pics on the net showing a fully polished unit. Spoke at length with a VP of MC'c at the SEMA show last November.
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Old 03-13-2004, 08:50 PM
CRUZMISL CRUZMISL is offline
 
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H2_SUT_SC, her eis a dyno of a whipple done by DTE. Not too shabby at all.

Joe.
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  #8  
Old 03-22-2004, 04:34 PM
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CRUZMISL, You are right on the money!
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  #9  
Old 03-11-2004, 06:45 PM
H2_SUT_SC H2_SUT_SC is offline
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by CRUZMISL:
That's a good question. Definitely a whipple or Magnuson is the way to go. Anyway, the most power will be had with the Mag but it is also intercooled so that's not a fair comparison. The Mag also uses new injectors/reprogrammed ecm to match fuel flow whereas the whipple uses piggy back ecm and injectors to get the job done. Problem is the intake was never designed to have fuel flow through it so it's not the best plan. The Mag also offers a warranty on all driveline components and the whipple only on the charger itself.

THe whipple is cheaper, easier to install and quieter though. The whipple coupled with the properly sized injectors and custom ecm program is quite a package but I am having a tough time deciding myself. While the added cost of the Mag is a deterrent the extended warranty is not. Dynotech Engineering and Lingenfelter are less than 3 hours from me. DTE uses the Whipple and Ling uses the Mag. Ling is about $1500 more.....

If I get one I'm getting a personalized plate
BLOWN H2

Joe <HR></BLOCKQUOTE>

Yeah, I just saw the DTE site for the first time. Pretty sweet especially the 6.8L Brute 409. That's actually a cheap price at $15k to get 557HP. www.terminator427.com charges like $25k for the same thing. I'd be tempted to do this.
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  #10  
Old 03-11-2004, 08:11 PM
CRUZMISL CRUZMISL is offline
 
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THe problems with the Whipple's is that they use the piggy back ecm and injector's. The supercharger itself is very reliable. Also please remember that the dealers get the Mag's through their network which in turn means more profit for them. It's nit like it really matters because it's not a poor choice.
Joe
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  #11  
Old 03-12-2004, 04:15 PM
H2_SUT_SC H2_SUT_SC is offline
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by KenP:
Here is a pic of mine. It is LPE's install. Engine HP came in between 530-540 hp. The range is used because it was done on a chassis dyno and an estimate of driveline lose was used. I will have the exact dyno numbers soon as they were mailed a couple of days ago.

I have a 2800 Yank converter, cam pistons, ported heads, the works. My truck dynoed at a higher HP than the one tested by Motor Trend that ran 14.4 sec 1/4 times.

I have been running 9 lbs of boost. It will leave four black marks on the pavement.

I must warn you that it does create quite a racket when you mash the throttle. You cannot hear cell phone conversations.

If you have any questions I will be glad to help. My salesman's name at LPE is Tim. You can also speak to Ed. They both know me and are very friendly and helpful. Further, when I had some issues they sent a truck to pick it up, fixed it and shipped it back to me. All under warranty. The dealer even covered all recent repairs under warranty and said it was the best install they had ever seen. <HR></BLOCKQUOTE>

That is so bad ass! That was my first idea was I was actually going to buy my SUT from a dealership in IN and have LPE pick it up and do all the work you had done. Basically the H2 package. But I called Jim at LPE and he said that they can't touch Cali vehicles due to our screwed up smog emmissions. I almost contemplated having it registered in Nevada just to get it done.

Did you get the HD tranny done? Also, are you able to run 9 lbs of boost because you upgraded the engine internals?
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  #12  
Old 03-12-2004, 03:53 PM
H2 Bill H2 Bill is offline
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H2_SUT_SC, I have the Whipple. Mine was one of the first of the Whipple installs and had to opt for the custom tuning. I have had the supercharger for over a year and a half with only one problem (had to replace the piggy back computer ) and it runs extremely strong. I don't have any dyno figures because no one around here has a 4wd dyno. Shawn at LAPD now has one but he is quite a distance for me to go. As far as the tranny goes, I, too, am driving it until it blows then I will go to the HD. If you go to a high stall torque converter you will definitely increase the stress on the drivetrain. I didn't do this for racing but for increased performance on what I feel is an underpowered vehicle.
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  #13  
Old 12-01-2004, 08:19 PM
H2 Passion H2 Passion is offline
 
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BIG-C,

How was the installing of your Magnacharger? are you happy? there was any problem after?

elie
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  #14  
Old 03-12-2004, 04:11 PM
H2_SUT_SC H2_SUT_SC is offline
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by It's a Dry Heat:
have been collecting SC stuff as links. don't know how to get your email address. <HR></BLOCKQUOTE>


mshetley@excite.com

I'd appreciate any links.

H2 Bill - If LAPD is in LA then I may have to pay him a visit as that is just a few hours south of me.

Also, can someone explain how exactly the torque convertor works and why it'd put extra stress on the driveline. I know nothing. LOL

Is this one of the larger H2 discussion forums? I posted on automotive forums and got 0 responses.

I'm a mod on a few other bodybuilding sites and I'm used to them flying.
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  #15  
Old 03-12-2004, 02:22 AM
HGW HGW is offline
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The converter is actually a Yank, not a Wang--and is for better power tranfer, you now you can Yank your Wang.

You asked for opinions.

LPE knows their stuff---they have proven so all over the country.
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  #16  
Old 03-11-2004, 08:19 PM
H2_SUT_SC H2_SUT_SC is offline
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Very true. I was just glad they said they were carrying Magna after reading your post. Plus now it's under warranty and such. They said it was $8k for the polished Magna, Corsa exhaust and AirRaid intake - installed. I figure that's not that bad.

What HP est would that be? 450-475?
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  #17  
Old 03-12-2004, 11:48 PM
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This is one area where you cannot spend to much. BUY the very best unit you can afford or have custom made for you!
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  #18  
Old 03-12-2004, 01:46 AM
CRUZMISL CRUZMISL is offline
 
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My wife likes the Wang....I don't

Ling suggests upgrading the trans, Dynotech doesn't. DTE does suggest adding a shift kit and said everything should be fine. For me I'd add the shift kit and wait until it blows up

Joe
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Old 03-12-2004, 05:35 PM
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H2SUTSC: This is THE H2 site.

Yes I had the trans done. It was really a no brainer. LPE highly recommended it due to the huge power increase and they warrant their work. With the SC alone a total HD rebuild is probably unnecessary.

Bill is right with his "simplified discription". Just imagine stepping on the gas and the truck not really moving until it gets to 2800rpm. The engine "flashes" to that rpm and away you go. Drop the clutch an a stick at 2800 and you will understand. Though it is not quite the same.

Around town the rig has very docile manners, except for the volumn and shift points . You really would not notice a difference with the converter alone. I have had higher stall converters in other vehicles, but did not notice a harsher shift at first. However, usually when a converter is installed a shift kit or reprogramming is done to the trans so a different shift pattern will occur. You will then have a harsher shift.

With my truck the shifts occur at a much higher RPM than normal, then bang into the next gear. They do not "slide" gear to gear. But that is what I wanted. It can be programmed anyway you want it.

I am going out shortly. I will try to remember to jot down the shift points of normal around town driving for you and post later.
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Old 03-12-2004, 04:10 PM
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Here is a pic of mine. It is LPE's install. Engine HP came in between 530-540 hp. The range is used because it was done on a chassis dyno and an estimate of driveline lose was used. I will have the exact dyno numbers soon as they were mailed a couple of days ago.

I have a 2800 Yank converter, cam pistons, ported heads, the works. My truck dynoed at a higher HP than the one tested by Motor Trend that ran 14.4 sec 1/4 times.

I have been running 9 lbs of boost. It will leave four black marks on the pavement.

I must warn you that it does create quite a racket when you mash the throttle. You cannot hear cell phone conversations.

If you have any questions I will be glad to help. My salesman's name at LPE is Tim. You can also speak to Ed. They both know me and are very friendly and helpful. Further, when I had some issues they sent a truck to pick it up, fixed it and shipped it back to me. All under warranty. The dealer even covered all recent repairs under warranty and said it was the best install they had ever seen.
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