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i have a couple of quick questions regarding a tune-up:1. for those of you have removed your air assembly and have a standard air cleaner, whats the difference between having a larger vs. smaller filter. right now, i have a 14x4, but i always wondered why some guys go with the very small filters? i always thought larger would be better, now i'm thinking the smaller would have a better response? drawbacks?
2. whats the difference between ld and hd 350's on plugs that the haynes list? the light duty r45ts vs. the heavy duty r44tis one better for power and one economy? and i imagine delcos are best to use on our trucks?
really? is there any benefits of adding more expensive plugs on these trucks? i've had several vehicles with stock ac delcos supposedly being the best for those applications, however they were all fuel injected and computer controlled. that may be the reason. idk. i have an 85, so, no computer and the esc has been removed. if anyone has went with more expensive plugs and have seen a little better results with performance and economy, i may go that route.