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Post-Header Install Issue

802 Views 4 Replies 3 Participants Last post by  Lee-the-Impaler
Hey guys!
I bought a 2010 Titan a few months ago, my first truck. First thing I noticed was a pretty wicked exhaust leak coming from the driver side manifold. Today I remedied that issue with some stainless steel long tubes and a true dual exhaust to match. The leak is gone, which I'm very excited about, but I noticed another issue that I hadn't before. Around 60 mph my truck will drop into what I'm assuming is overdrive. This is fine, as the gas mileage is pretty awful, and I'd like to keep the rpms as low as possible. The issue is that it doesn't really want to downshift to pick up passing speed. I have to either push the throttle about halfway or feather it to get it to drop a gear. It might just be a coincidence as far as timing with the exhaust stuff, but it makes me worry. Any ideas?

Tl;dr - Put headers on, doesn't want to downshift at speeds.
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try it in tow mode. If you're expecting high MPG out of a full size pickup, you bought the wrong vehicle.
lets have some pics of the TA. Had an '85 I did a partial restore on before I seized the 305 and sold it. I'm not a car guy, but there are a few of them that get my synapses firing.
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