Originally Posted by
blackpepper
My car has a inmotion tune but since adding the other half of a dual intake step colder plugs and a 75 shot wet can't hit the old times anymore,12.0-12.@114-116 on tsw rims and street tires.Given I only use the 75 shot in third gear,and its felt but I can only run 12.3 12.4 @114.Is its possible to lose a tune I replaced my battery last month,new crank sensor ordered a new crank sensor and changing the trans fluid and filter and oil next week,if my times don't change I may be maxing out my stock fuel pump.Any thoughts my mods are a code 3 pulley,dcai,need wings nodded Mani's,secondary car and resonator delete with 3inch piping,car made 364whp 360tq
Could you possibly not have the correct gap on the new colder plugs? And yes you may need to upgrade your pump. Just out of curiosity, where did you merge the two 2 1/4 pipes into one 3 inch? I just did this and merged into a Y about where the rear CATs had been, then straight into the muffler.