K&N filter and intake tube from AIRAID got me about 1.2 on my 2015 Yukon Denali. I also run Amsoil in everything. There's a lot of friction loss in the drive train. I also swapped the exhaust for a Gibson 3.5" system. That probably hurt more than helped because I love jumping on it. I drive...
I have HP Tuners and only did a trans tune and it was amazing. With Intake and Gibson exhaust and tune I dropped .7 seconds off my 0-60 time and now with the air off I get rubber in second. If anybody is interested I can send a copy of my HP tuners file.
I went with the Gibson exhaust, it was the only one I could find that was 3.5" all the way back. My wife complains when she has to sit in the back seat but otherwise not to bad. I got it on sale for under $500. All stainless and lifetime warranty. Their dyno test gained 22hp on the 2015...
I have the Z95 suspension on my Denali and did the Arnott replacements. Way better than stock and air leveling still works. I recommend it even if the Maganride hasn't gone bad yet.
I just replaced my Magnarides with the Arnott struts and shocks. I wish I knew about them sooner they are so much better than the Magnaride junk. The front struts come with springs with an extra coil and heavier gauge wire than factory. I had a leveling spacer but the front was still a little...
I installed the Gibson stainless exhaust on my Yukon Denali. It was the only true 3.5" I could find. The sound is great and the performance is even better. Lifetime warranty was a big seller too. I bought it through JEGs for $465 for everything, they had it on sale.
I bought one of the spacer kits that fit on the bottom shock mount and added a bracket to extend the ride sensor so it was in the factory ride position. It raised the front end perfectly. I'm running the 275/60R20 Goodyear Ultraterrain which are 33" diameter. I just replaced my OEM Magneride...
I just replaced my OEM Magneride struts/shocks with units from Arnott SK3354 and AS3066. They maintain the air leveling and have a built in resistor that fools the ride control. They were $1300 at Rockauto. The shock is an Eibach unit and the ride is incredible. I wish I knew about these when...
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