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Old 08-19-2010, 08:06 AM   #1
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Power tuner for 2010?

Hey guys, does anyone know if there is a tuner out there for a 2010 gasser? All I could find was 2008 and would like to add one. The main reason for all of this is to adjust the tire size…? and a little power couldn't hurt either.
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Old 08-21-2010, 12:13 PM   #2
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Re: Power tuner for 2010?

Floorguy,

I dont think your problem will be solved by a Power Tuner. You really messed with the gearing when you went to the big tires and you will be money ahead by changing your gearing. Your O/D became almost useless and your first gear became too tall when you went to those tires. This is causing your torque converter to compensate by slipping. They are meant to do this, but your set up is working it way too hard this will cause the fluid to heat up and eventually burn causing premature transmission failiure.
Most stock vans come with 225/75 16 tires and 3.7 rear end, it must be the best ballance between power and economy. As an option they offer 4.1 for power and 3.55 for economy. Putting 33" tires will make it as though you went to a 3.28 rear end. Ford does not offer that ratio, and for good reason. It will make your engine and trans work way too hard. I think the highest/ fastest ratio they offer is 3.55. The difference seems small, but you need to multiply tire revolutions per mile by the rear end ratio to get the engine RPM at 60 MPH in direct (or multiply by your O/D ratio, probably .71? ) to get a true scence of the impact of big tires on engine RPM and performance.
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Old 08-21-2010, 12:31 PM   #3
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Power tuner for 2010?

Thanks Silver, I went back down to 275/55's now which was pretty close to my 245/75? stockers.

I can still feel a little sluggishness over stock tires but am happier with these tires overall. I haven't thought about messing with the gears yet, but thanks again for the info.
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Old 08-21-2010, 12:57 PM   #4
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Re: Power tuner for 2010?

What size wheels are you running?
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Old 08-22-2010, 06:08 PM   #5
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Power tuner for 2010?

Quote:
Originally Posted by Silver350
What size wheels are you running?
Edit: They are 20" wheels
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Old 08-27-2010, 10:45 PM   #6
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Re: Power tuner for 2010?

You dropped down from your 35" tires already? Got any pictures of the lifted van on the new smaller tires?
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Old 09-11-2010, 12:10 AM   #7
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Re: Power tuner for 2010?

Quote:
Originally Posted by ctimrun
You dropped down from your 35" tires already? Got any pictures of the lifted van on the new smaller tires?
Ya, I decided the 35's were not for me right now.....maybe in the future when I get around to the Ujoint kit.

Don't have any pics of the van with the newer tires, but I will snap a couple of pics soon.
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Old 09-20-2010, 03:27 PM   #8
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Re: Power tuner for 2010?

Quote:
Originally Posted by floorguy_724
Quote:
Originally Posted by Silver350
What size wheels are you running?
Edit: They are 20" wheels
Floorguy, looks like you've got a 31.9" tire. With 3.7's, you basicaly created a 3.53 ratio. Yea it's a little tall but a lot better than with the 35"'s!

Where did you find the tuner for the 2008?
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