hi all, i have a 2005 f150 fx4 with hypertech II's 87 octane performance tune on my truck now. what i want to know before i go and buy it is will installing a k&n fipk make my truck run to lean with the hypertech? i contacted hypertech before i bought it and the tech there said it should be ok BUT they didnt run tests with the k&n installed. anyone running the hypertech and a k&n together?

 

The name "hypertech" should give you a clue not to buy. If your going to invest in something, don't waste your money on their products.

 

thanks, but that does nothing to answer my question.

 

Hi.

How would those running that combo (or any other aftermarket intake / tuner combo) really know for sure?

Running lean does not always set a CEL.

The only way to know for sure is to measure A/F's with a wideband - as in datalogging for example.

It's common knowledge by now, if you take the time to search here, that a lot of the newer trucks are running too lean from the factory - your hypertech won't address that, and a non-stock intake can just exacerbate the problem.

Perhaps a dyno session is in order, if you really want to be sure.

While waiting for the real experts ( I'm largely self-taught by doing a LOT of reading, so I insist that you don't just take my word for it), do some research on the topic for yourself.

That Handy little Search button is just dying to help you

Cheers
Grog