Increase HP or acceleration to 2006 Hummer H3.

[lloyd1402]

What E fan do you have?

On my I have a 16" fan.

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[K0PIR]

On my I have a 16" fan.

Do you have one of the E fan conversions too? Which one or did you do a custom?

 

[lloyd1402]

Do you have one of the E fan conversions too? Which one or did you do a custom?

A custom one.

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[GreatDaneHummer]

I run a Derale E fan with a thermal couple into the radiator line connected to a Derale adjustable fan controller. So far I do not feel the single fan is enough being a pusher and I need to add two pullers to the other side. Till I do this I still run the factory engine fan. Without the engine fan it just simply could not cool itself enough. Yes I did notice better power without it being on the engine when I did test it at first. It is just another summer project to add to the list.

What E fan do you have?

 

[K0PIR]

I run a Derale E fan with a thermal couple into the radiator line connected to a Derale adjustable fan controller. So far I do not feel the single fan is enough being a pusher and I need to add two pullers to the other side. Till I do this I still run the factory engine fan. Without the engine fan it just simply could not cool itself enough. Yes I did notice better power without it being on the engine when I did test it at first. It is just another summer project to add to the list.

Thanks for the info.

James at Supermodulation had a kit and I don't know if he still sells it. I saw good reports on it keeping the engine cool. I think I might go that route this summer.

According to others the E fan conversion frees up some HP and makes a noticeable difference. I'd like to try it and have my PCM re-tuned.

 

[GreatDaneHummer]

I am going to make a new inner shroud for mine when I do the 2x puller fans. When I do I can show some drawings or build a few extra if anyone wants them.

 

[Woodtick]

I'm going to keep my cooling system stock. 11 years old,over 100 k on the clicker, and still not one over heating problem. Everything is original but the antifrozen.:woot:

 

[Bruces]

I am going to make a new inner shroud for mine when I do the 2x puller fans. When I do I can show some drawings or build a few extra if anyone wants them.

i have everything but the shroud. Can you make one without the center cut? I am going with two fans as well but mine are together (Ford Fusion)

 

[4speedfunk]

Same as Woodtick here. I'm leaving mine alone...works perfectly. It is time for a fluid change (48k miles).


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[Airborne]

You can see in my sig I have done all the bolt ons you can, aside from the SC. I am seriously considering that now though. When I change the sticking thermostat I will be going that route.

The upgrades I noticed the most difference were: the header (in conjunction with a full exhaust system), Efan, and ported throttle body. All coupled with a tune.
The other stuff added a little here and a little there but the money for return may not be worth it for you.
If you want noticeable driving difference tomorrow with out breaking the bank and something you can do in an afternoon I strongly suggest; Efan, ported throttle body, and a cai. Also delete the resonator box with the cai. Once you get those, get a tune. It will be a very noticeable difference.

As the other guys have said the air resistance thing is huge. To put it into perspective... I had all my ucp/rock rails on for several thousand miles. I decided one day by pulling those I would lose "dead weight" and save some mpg. Over a year I averaged 16.7 mpg. City and freeway couldn't break that. I put the front 2 skids back on 2 months ago and now I am at 19 mpg combined. I was floored. And pissed that I wasted a whole year on my good idea fairy.