So last night I took my dad and I up to famoso for racing for the second time this season. I was pretty excited because last year all I had was a magnaflow catback and I ran a 13.7 in the 1/4. And now i have a tuner and a LMI intake but it ran terrible! my best run of the night was a 14.5 at like 96 MPH. I thought maybe the tuner messed it up but when I unplugged it I ran a 15.2 at 100mph.. no idea why it went faster but much slower. Seem to lug pretty bad around 2-3k rpm almost like a turbo lag. Has this happened to anyone else? a sundden slow down in vehicle. I lost to a V6 mustang :smiledown: so im trying to adress this right away.