Which Supercharger should I go with?

[H2_SUT_SC]

That sounds similar to what I did with my Denali. I used the Predator programmer to recalibrate shifting points and the truck now waits longer to shift into the next gear. It helped out tremendously as before it shifted way too soon and I was constantly fighting the truck to downshift/upshift/downshift/upshift. Now it just cruises until it hits a higher rpm and then shifts.

However, I thought with the reprogram of the CPU when they install the Magna, that it would do the same thing.

[CRUZMISL]

I'd venture to say you'd make 475 or so give or take 10 but that's not what you'll have the the wheels. The drivelines of these trucks are so power hungry you'll be lucky to manage 350 at the wheels. While this doesn't sound too exciting you also have to realize these things dyno at about 220HP stock......that's a sad number.

In all honesty though, I'd probably choose somewhere other than the dealer to get it put on. What you really need is someone that can dyno tune your pcm rather than flash a generic program. This will yield the highest HP with the least trouble with detonation and knock retard. Every motor is different even though they all use the same parts. JMHO.

Let us know how you make out.

JOe

PS. The tranny is supposed to be the big weak link in this whole equation. I don't know if there is any truth to that though.

[H2_SUT_SC]

If I lived anywhere close to IN or they had an LPE shop in Northern Cali I'd pay the $3k for the HD tranny upgrade. I figure once I blow it I'm going to have it trucked down there and have him swap it with the HD one.

Excuse my ignorance but what exactly will a shift kit or torque convertor do? I thought the CPU reprogram would change the shift limits.

Would any of those two options assist with getting additional HP to the ground??

[Dan]

Check out the Kenne Bell too:

www.kennebell.net

Welcome to the "Waiting for the SUT Club"!

[H2_SUT_SC]

The dealer I spoke to said they do the computer reporgram along with the larger injectors with the Magna they install. They've also apparently been installing quite a few. At this point I think I'll just go that route even though I'd much prefer to have LPE do that package. If it wasn't for CA's damn emissions crap. You'd think Arnold being the Hummer man would nix all that.

[H2_SUT_SC]

Well guys I did it. Put my deposit down on the Stealth Grey (blue/grey) SUT on Sat. I get it on May 13th. I'm the first one to get it at a very large Cali dealership so I'm sure it will be one of the first in Cali. I'm having the Magna installed along with the Corsa exhaust and Volant cold air intake. I'm also going with these rims 20" with the 325/60/20 Nitto Terra Grapplers. They had the Nittos and the Toyos at the dealership and I thought the Nitto's looked sick in real life.

http://www.kmcwheels.com/kmcweb_imag...ges/ult_h2.jpg

[CRUZMISL]

The dealer will reprogram your puter with a generic file that comes with the kit. What you need to do is have someone monitor the air fuel ratio, timing and a host of other things to truly fine tune it to your vehicle. IF your dealer does this then you're very lucky.

As far as torque converters go, it is really an art. When you add a converter alone the shift points are actually softer which is why you need to add a shift kit. Also a shift kit will allow much less slipping between gear changes. This in turn lowers heat which is good for reliability. There is a balance though. I don't want to have to wear a neck collar when i drive

THe explanation of what a converter does is accuarte but simplified. The reason it adds more stress on the driveline is because it lays down huge power from a stop. WHen your trucj weighs 7000lbs and is 4 wheel drive you can start to see where really aggressive starts can cause problems. Now if you have the power Ken has who cares because you simply ignite the tires from a stop. That is about as cool as it gets.

Joe

[It\'s a Dry Heat]

have been collecting SC stuff as links. don't know how to get your email address.

[H2_SUT_SC]

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.

I'm installing the Magnacharger on my H2 in about a week, I will let you all know how it goes. BIG-C

[CRUZMISL]

Oh Yank. I had a Yank 3500 stall in my Vette. It was good but had an annoying vibration at about 2000rpm. No doubt Lingenfelter is one of the best though. Actually the guy that owns DTE was Lingenfelter's engine builder for years before he went out on his own to build CART engines or something then he opened up his own place. I bet the resale would be better with Lingenfelter's name behind the install. What do you think?
Joe

[H2 Bill]

LAPD, I believe, is in the northern section of L.A.. I would love to go and use their dyno but I am in the busy part of my season at work so it is hard to get away.
Generally a higher stall torque converter does not engage your transmission until a higher rpm, thereby using more useable torque when you launch and shift gears. It usually gives more of a harsh shift though, in turn creating more wear and tear on the entire driveline. This is an extremely simplified description of how they work!

[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

[KenP]

The local dealer just installed an Eaton. They did not reprogram the computer and I think it is a waste of money until then. The buyers had ridden in my truck just days before and could not wait for theirs. Oh, are they going to be disappointed. They can't even chirp the tires from a standstill.

Under mild acceleration I would go to 31-3500 for the 1-2 shift, 27-3k for the 2-3. That is accelerating with traffic.